1958 Extract Report of The Walla Walla District

Report Upon the Improvement of Rivers and Harbors in
The Walla Walla, Wash., District

Extract From the Annual Report of the
Chief of Engineers, 1958

Department of the Army
Office of the Chief of Engineers
1958

This district comprises southeastern Washington, exclusive of the watershed of the Columbia River and tributaries above and including the Yakima River, Wash.; all of Idaho, except the northern part and a small southeastern portion; a portion of western Wyoming; a small part of northwestern Utah; part of northeastern Nevada and all of eastern Oregon.

Improvements

NAVIGATION

1. SNAKE RIVER, OREG., WASH., AND IDAHO

Location. The Snake River, which is the largest tributary of Columbia River, rises in Yellowstone National Park, in the western part of Wyoming, flows in a general westerly direction for about 1,000 miles and empties into Columbia River near Pasco, Wash. 324 miles from the Pacific Ocean.

Previous projects. Prior to the Act of June 13, 1902, the improvement of Snake River below Lewiston, Idaho, (River Mile 140), was associated with improvement of Columbia River above Celilo Falls. The total cost and expenditure prior to adoption of a formal project was $168,500, of which $153,410.26 was for new work and $15,089.74 was for maintenance. For further details see page 1991 of Annual Report for 1915.

Open-river improvement of Snake River from Riparia, Wash. (River Mile 67) to Pittsburgh Landing (River Mile 218) was authorized by Act of June 13, 1902 (H. Doc. 126, 56th Cong., 2d sess.), with no specified channel dimensions above Lewiston. For further details, see page 2246 of Annual Report for 1903 and page 1986 of Annual Report for 1906. This authorization was extended to include improvement from the mouth to Riparia by Act of June 25, 1910 (H. Doc. 411, 55th Cong., 2d sess.), and was further extended to include the reach from Pittsburgh Landing (River Mile 218) to Johnson Bar Landing (River Mile 231) by Act of August 30, 1955. (Rivers and Harbors Committee Doc. 25, 75th Cong., 1st sess.). Under these authorizations the total cost and expenditure for improvement below Lewiston, Idaho was $418,219.88, of which $246,739.54 was for new work and $171,480.34 was for maintenance. In addition, the State of Washington contributed $85,000 in 1907 for new work below Riparia, Wash. The total costs of previous projects are summarized, as follows:

Project	New Work	Maintenance	Total

Prior to June 13, 1902	$153,410.26	$15,089.74	$168,500.00
1902 to Act of March 2, 1945	246,739.54¹	171,480.34	418,219.88¹
Totals	400,149.80	186,570.08	586,719.88
¹In addition, $85,000 for new work expended from contributed funds.

Existing Project. The River and Harbor Act of March 2, 1945 (H. Doc. 704, 75th Cong., 2d sess.) authorized construction of such dams as are necessary and open channel improvements for purposes of providing slackwater navigation and irrigation between the mouth of Snake River and Lewiston, Idaho. This authorization modifies the previous authorizations only for that portion of the improvement below Lewiston, Idaho. The Acts of June 13, 1902, and August 30, 1935, as they pertain to the open river improvement from Lewiston, Idaho to Johnson Bar Landing are part of the existing project.

Improvements presently included in the authorized project are as follows:

Item	Estimated cost (July 1958 Base)

Ice Harbor lock and dam, river mile 9.7	$135,000,000
Lower Monumental lock and dam, river mile 44.7	138,000,000
Little Goose lock and dam, river mile 72.2	139,000,000
Lower Granite lock and dam, river mile 113.1	118,000,000
Open-river improvement, Lewiston to Johnson Bar Landing	34,613¹
Total	$530,034,613
No channel dimensions specified, maintenance only.

Local Cooperation. No conditions were imposed by law.

Terminal facilities. From the mouth of the Snake River to Riparia, 67 miles, there are no wharves or warehouses on the river banks. From Riparia to Lewiston, Idaho, 73 miles, there are no wharves, but there are public and privately owned warehouses and grain elevators located at Penawawa, mile 91.5, Lewiston, mile 140, Asotin, mile 146 and between Asotin and 11 miles above. Just above Lewiston, mile 140.5, there is a privately owned 40- by 60-foot wharf. On the left bank between Riparia and Lewiston there are several wheat warehouses formerly used for storage of wheat to be transferred to the railroad on the right bank.

Operations and results during fiscal year. Operations and results during fiscal year on Ice Harbor Lock and Dam and on Lower Monumental Lock and Dam are given in an individual report for each of those projects.

A contract was awarded Washington State Highway Department for engineering services in development of preliminary plans for the relocation of United States Highway 295 and United States Highway 410 in the vicinity of Central Ferry and Clarkston areas respectively of the Little Goose and Lower Granite reservoirs, and is approximately 22 percent complete.

Total costs during the fiscal year were $26,399,063, all for new work.

Condition at end of fiscal year. The following table summarizes the status of work under "Snake River, Oreg., Wash., and Idaho."

Project	Approved 1958 Estimated Cost	Total new work allotments to June 30, 1957	Cost to June 30, 1958		Percent completed	Construction data
Project	Approved 1958 Estimated Cost	Total new work allotments to June 30, 1957	New work	Maintenance	Percent completed	Construction data

Ice Harbor lock and dam¹	$135,000,000	$38,905,173²	$38,563,373	—	—	Construction begun in January 1956.
Lower Monumental lock and dam	138,000,000	764,000^{3, 4}	718,203⁴;
Little Goose lock and dam	139,000,000	220,000⁴	217,027⁴
Lower Granite lock and dam	118,000,000	232,000⁴	209,516⁴
Survey for navigation aids	—	—	—	$3,394
Open River improvement—Lewiston to Johnson Bar landing	34,613³	34,613	34,613	30,277	—	Maintenance only
Total	530,034,613	40,155,786	39,742,732	33,671
¹See individual report. ²Includes $228,000 of fiscal year 1959 advance procurement funds. ³Includes $9,000 of fiscal year 1959 advance procurement funds. ⁴Prorata cost of site selection studies. ⁵No channel dimension specified.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958, including fiscal years prior to 1954^{1 2}
	1954	1955	1956	1957	1958

New Work
Appropriated	$50,000	—	$1,000,000	$10,737,000	$26,482,000³	$40,555,936⁴
Cost	9,778	$40,565	1,286,041	10,130,947	26,399,063	40,142,822⁴
Maintenance
Appropriated	—	3,000	—	—	2,294	220,241
Cost	—	3,364	30	—	2,294	220,241
¹Includes $400,150 for new work and $186,570 for maintenance on previous projects. ²In addition, $85,000 for new work was expended from contributed funds on previous project. ³Includes $237,000 of fiscal year 1959 advance procurement funds. ⁴Includes $365,000 preauthorization studies.
Other new work data:
Unobligated balance, June 30, 1958						$306,188
Appropriated for succeeding fiscal year ending June 30, 1959						20,963,000
Unobligated balances available for succeeding fiscal year ending June 30, 1959						21,269,188
Estimated additional amount needed to be appropriated for completion of existing project						468,915,827

2. LOWER MONUMENTAL LOCK AND DAM, SNAKE RIVER, WASH.

Location. The site of this project, as shown in the report on Snake River, Oregon, Washington, and Idaho, will be 44.7 miles above the mouth of Snake River at the head of Ice Harbor lock and dam pool, and approximately 45 miles east of Pasco, Wash. This location is only tentative at this time since it is based on preliminary site selection studies completed in 1947. It is probably that detailed siting studies now under way will result in a downstream movement of the project on the order of 3 miles, but results of these studies will not be available until the general design memorandum is completed.

Existing project. The project provides for a dam, power plant, navigation lock, and appurtenant facilities. The improvement will provide for navigation, hydroelectric power generation, and incidental irrigation. As presently proposed, but subject to minor modification when detailed planning studies are completed, the dam is designed for a normal pool at elevation 533 mean sea level. The normal pool will create a reservoir extending upstream about 30 miles which will be designed to provide slack water to the Little Goose lock and dam site. The total length of the structure will be on the order of 2,500 feet. It will consist of a powerhouse, spillway dam, navigation lock, and necessary nonoverflow sections. Fish passing facilities including two ladders will be provided. The power plant will be constructed for three 90,000 kw. units to be installed initially with provision for three additional units, for an ultimate total of six units. The spillway dam will provide capacity to pass a design flood of 850,000 cubic feet per second. The navigation lock will be of single lift type and will have clear plan dimensions of 86 feet by 675 feet and will provide a minimum depth of 14 feet over the lock sills.

The estimate of cost for new work, revised in 1958, is $138,000,000. The existing project was authorized by the River and Harbor Act approved March 2, 1945 (see H. Doc. 704, 75th Cong., 3d Sess.).

Operations and results during fiscal year. New Work: General design memorandum studies were initiated and were advanced to approximately 50 percent of completion. These studies included preliminary layouts and design and power studies at alternate sites but were concentrated on accumulation of field data. Dam site surveys and soundings were obtained and detailed reservoir surveys are nearing completion. Foundation explorations by hired labor and contract were made for alternative sites under consideration.

Total costs during the fiscal year were $463,203 all for new work.

Condition at end of fiscal year. The general design memorandum has been advanced to 50 percent of completion. No construction work has been done.

Total costs have been $718,203, all for new work.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958, including fiscal years prior to 1954
	1954	1955	1956	1957	1958

New Work
Appropriated	—	—	—	—	$509,000¹	$764,000²
Cost	—	—	—	—	463,203	718,203²
¹Includes $9,000 of fiscal year 1959 advance procurement funds. ²Includes $75,000 preauthorization studies.
Other new work data:
Unobligated balance, June 30, 1958						$28,627
Appropriated for succeeding fiscal year ending June 30, 1959						541,000
Unobligated balances available for succeeding fiscal year ending June 30, 1959						569,627
Estimated additional amount needed to be appropriated for completion of existing project						136,695,000

3. ICE HARBOR LOCK AND DAM, SNAKE RIVER, WASH.

Location. The site of this project is on the Snake River, 9.7 miles above the mouth of the river, at the head of the McNary lock and dam pool, and 12 miles east of Pasco, Wash.

Existing project. The project provides for a dam, powerplant, navigation lock and appurtenant facilities. The improvement will provide for navigation, hydroelectric power generation and incidental irrigation. The dam is designed for a normal pool at elevation 440 mean sea level. The normal pool will create a reservoir extending upstream about 35 miles, providing slackwater to the Lower Monumental lock and dam site. The total length of the structure will be approximately 2,790 feet, and will consist of a nonoverflow section at the south abutment, powerhouse, spillway dam, nonoverflow section, navigation lock and an earthfill and rockfill at the north abutment. Fish passing facilities including two ladders will be provided. The powerplant will be constructed for three 90,000 kilowatt units to be installed initially with provision for 3 additional units, an ultimate total of 6 units. The spillway dam will be 610 feet long, and the overflow crest at elevation 391 mean sea level will be surmounted by 10 radial gates 50 feet wide by 52.9 feet high which will provide capacity to pass a spillway design flood of 850,000 cubic feet per second. The deck will be at elevation 453 mean sea level and will provide a service road and track for a gantry crane. The navigation lock is a single lift type and will have clear plan dimensions of 86 feet by 675 feet.

The estimate of cost for new work approved in 1958 is $135,000,000. The existing project was authorized by the River and Harbor Act approved March 2, 1945 (See H. Doc. 704, 75th Cong., 3d sess.).

Operations and results during fiscal year. New Work: The construction of the first major phase of the project within the first-step cofferdam was continued on schedule throughout the year. The work consisted of 7½ bays of spillway, 6-unit skeleton powerhouse structure, concrete gravity south abutment, south shore fish ladder, and fishway pumping plant. Relocation of the Spokane, Portland, and Seattle Railway past the dam site was completed during the year. Construction of pumping plant, distribution lines, and storage tank for a permanent water system was completed. Supply contracts were awarded for fishway switchgear, the manufacture and delivery of eight 300-cubic feet per second fishway pumps, and delivery of special sheet piling. Manufacture of the powerhouse intake gantry crane, 500-ton powerhouse bridge crane and tailrace gantry cranes were continued through the year. Engineering designs, plans and specifications for the powerhouse completion contract were substantially completed during the year and are approximately 70 percent complete for the north shore or second phase of construction. Engineering studies were continued for relocation of the three railroads involved in the construction of the project. Hydraulic model studies were carried on in conjunction with the design studies for the navigation lock and other features for the second phase construction on the north shore.

Total costs during the fiscal year were $25,924,317 all for new work.

Condition at end of fiscal year. The contract for the first phase of the work within the first-step cofferdam is 80 percent complete. Relocation of 5.1 miles of the Spokane, Portland, and Seattle Railway past the dam site is complete. Pumping, storage and distribution facilities for the permanent water supply system are complete.

Total costs have been $38,563,373, all for new work.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958, including fiscal years prior to 1954
	1954	1955	1956	1957	1958

New Work
Appropriated	$5,000	—	$1,000,000	$10,700,000	$25,973,000²	$38,905,173²
Cost	9,778	$40,565	1,286,041	10,130,947	12,489,056	38,563,373²
¹Does not include $82,500 contributed funds for artificial spawning channel. ²Includes $228,000 of fiscal year 1959 advance procurement funds. ³Includes $150,000 preauthorization studies.
Other new work data:
Unobligated balance, June 30, 1958						$276,787
Appropriated for succeeding fiscal year ending June 30, 1959						20,422,000
Unobligated balances available for succeeding fiscal year ending June 30, 1959						20,698,787
Estimated additional amount needed to be appropriated for completion of existing project						75,672,827

4. McNARY LOCK AND DAM, COLUMBIA RIVER, OREG.

Location. The site of this project is on the Columbia River, 292 miles above the mouth, near Umatilla, Oreg., and 3 miles above the mouth of the Umatilla River.

Existing Project. This project includes a dam, power plant, navigation lock, and appurtenant facilities for purposes of navigation, power development, and incidental irrigation. The dam, which raises the normal water surface approximately 85 feet to elevation 340 mean sea level, will be approximately 7,300 feet long and consists of an earthfill and rockfill dam at the Oregon (south) abutment, powerhouse, spillway dam, navigation lock and earthfill and rockfill dam at the Washington (north) abutment. The powerhouse has an installation of 14 units of 70,000 kilowatts each, totaling 980,000 kilowatts. The spillway dam is 1,310 feet long, and the overflow crest at 291 feet above sea level is surmounted by 22 vertical-lift gates placed between piers which extend to elevation 361 mean sea level where a service roadway permits the operation of two 200-ton gantry cranes for regulating the gates. The navigation lock is a single lift type, capable of operating at all flows less than 800,000 cubic feet per second. Facilities for the upstream migration of fish consist of two fish ladders, a lock and an elevator. All structures are founded on a massive basalt flow that reaches a maximum thickness of 130 feet and directly overlies a sedimentary interbed. The pool created by the dam provides a navigable channel with a depth of 12 feet or over between the dam and the confluence of the Yakima River, a distance of approximately 48 miles. A controlling depth of 9 feet will be provided on Snake River from its mouth to a point approximately 10.2 miles above the mouth.

The principal data concerning the navigation lock and spillway dam are shown in the following table:

Navigation Lock
Type	Single lift
Dimensions:
Net clear width of chamber	86 feet
Net clear length	675 feet
Lift (vertical):
At extreme low water and normal pool	92 feet
At mean annual flow (190,000 cubic feet per second)	84.4 feet
At average maximum flow (550,000 cubic feet per second)	72.3 feet
Depth over miter sill at adopted low water (43,000 cubic feet per second)	12 feet
Depth over upper sill at normal pool (elevation 340)	20 feet
Character of foundation	Basalt flow
Spillway Dam
Over-all length of spillway dam section	1,310 feet
Type of construction	Concrete gravity
Elevation spillway crest	291 feet above mean sea level
Elevation deck	361 feet above mean sea level
Height, maximum (foundation to deck)	158 feet
Type of control	Fixed wheel segmental lift gates
Number of gates	22
Size of gates	50 by 53 feet
Stilling basin type	Concrete apron with baffles
Normal pool elevation	340 feet above mean sea level
Maximum pool elevation	356.5 feet above mean sea level
Maximum spillway capacity at normal pool elevation	1,480,000 cubic feet per second
Maximum spillway capacity at maximum pool elevation	2,200,000 cubic feet per second

The estimated cost of the dam, navigation lock, 14-power unit generating installation, fishways, and attendant buildings and grounds, revised in 1958, is $286,400,000. The average annual maintenance cost during the first 5 years was $1,126,453.

The existing project was authorized by the River and Harbor Act approved March 2, 1945. (See H. Doc. 704, 75th Cong., 3d Sess.)

Operations and results during fiscal year. New work: Plans and specifications were completed and construction was begun on a 400,000-gallon permanent water storage tank and a new project access road. Fire station and security building construction was completed.

Maintenance: The project was operated throughout the fiscal year.

Total costs during the fiscal year were $1,243,799 for new work and $1,715,302 for maintenance.

Condition at end of fiscal year. Construction of existing project which was started May 5, 1947, is now approximately 99 percent complete. The navigation lock, dam, fish facilities, powerhouse structure, levees, pumping plants, and relocations are complete. All 14 power units are now in operation.

The project was placed on a permanent operation basis on December 1, 1953. The pool was raised to normal operating elevation 340 on December 6, 1953. Fourteen power units were in commercial operation at the end of the fiscal year.

Total costs have been $284,194,634 for new work and $5,632,265 for maintenance.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958, including fiscal years prior to 1954
	1954	1955	1956	1957	1958

New Work
Appropriated	$26,350,000	$24,000,000	$11,185,000	$4,500,100	$740,000	$284,464,100¹
Cost	41,157,966	24,832,644	9,381,920	2,385,086	1,243,799	284,194,634¹
Maintenance
Appropriated	479,000	955,800	1,250,000	2,684,800	1,735,000²	5,677,500
Cost	468,146	964,119	1,226,078	1,258,620	1,715,302	5,632,265
¹Includes $185,000 donated funds. ²Includes $38,000 of fiscal year 1959 advance procurement funds.
Other new work data:
Unobligated balance, June 30, 1958						$179,440
Unobligated balances available for succeeding fiscal year ending June 30, 1959						179,440
Estimated additional amount needed to be appropriated for completion of existing project						1,950,900

5. JOHN DAY LOCK AND DAM, COLUMBIA RIVER, WASH. AND OREG.

Location. The site of this project is on Columbia River, about 3 miles downstream from the mouth of John Day River and about 215 miles above the mouth of Columbia River.

Existing Project. The project as authorized by the Flood Control Act approved May 17, 1950, in accordance with the plan presented in House Document 531, 81st Congress, 2d session, provides for a dam, powerplant, navigation lock and appurtenant facilities, with a slackwater pool about 75 miles long extending to McNary Lock and Dam. Under this plan the project would provide 2,000,000 acre-feet of surcharge storage space between normal pool elevation 255 and elevation 292 for control of floods on Columbia River. The powerhouse would provide 13 generating units of 85,000 kilowatts each for a total initial installed capacity of 1,105,000 kilowatts.

Subsequent to project authorization noted above a review of the flood-control features of John Day Dam was authorized by resolution of the Senate Committee on Public Works dated April 22, 1953. This review, dated March 25, 1955, and revised December 14, 1955, determined that the originally proposed pool fluctuation between elevations 255 and 292 would unduly handicap present and future developments bordering John Day pool. It recommended adoption of normal pool at about elevation 262 with about 500,000 acre-feet of flood storage space to be obtained between proposed drawdown level at elevation 252 and maximum controlled pool not to exceed elevation 265. Other features of the project would remain essentially unchanged. The Review Report was approved by the Board of Engineers for Rivers and Harbors on January 19, 1956, and submitted to the Congress August 9, 1956, where it was ordered to be printed as Senate Document 10, 85th Congress, 1st session.

The revised project proposed in the Review Report is economically feasible to a slightly greater degree than the project as authorized. In addition it has the firm support of local interests whereas the original proposal is strongly opposed. Also, planning funds appropriated in fiscal years 1956 and 1957 were based on continuation of studies using pools and storage recommended in Review Report. In view of this situation and contingent upon indicated approval of the Public Works Committees of Congress, the Review Report plan is considered to represent the presently authorized project.

Funds available for advance engineering for fiscal year 1956 were accordingly used in further development of the Review Report plan and a Site Selection Report was prepared under date of June 15, 1956. Funds available for advance engineering for fiscal year 1957 were used for general design memorandum studies. In accordance therewith, a normal pool level at elevation 265 now appears to be most economical with flood-control storage space in the amount of 500,000 acre-feet available between elevations 257 and 268. The project would include a single lift navigation lock, 86 feet wide by 675 feet long, in clear dimensions, with a normal lift of 105 feet; spillway, with twenty 50 x 58-foot gates, would be designed to pass a flood of 2,250,000 c.f.s. at maximum pool elevation 276 above mean sea level; and fish ladders and other facilities as necessary would be provided for passage of migratory fish. Power facilities to be provided initially and the extent of provisions for future power installation have not yet been determined and are subject to results of continuing general design memorandum studies. It is likely, however, that the initial power installation will consist of at least 12 units at 109,000 kilowatts each for a total of 1,308,000 kilowatts.

The estimated cost of new work, revised in 1958, is $387,000,000.

Operations and results during fiscal year. Studies were continued throughout the year on preparation of the general design memorandum. These studies included surveys, foundation drilling, operation of a hydraulic model, and office engineering studies. Contracts have been awarded for the procurement of steel sheet piling and construction of an access road, and invitation for bids was issued for construction of the first-step cofferdam.

Total costs during the fiscal year were $845,302, all for new work.

Condition at end of fiscal year. Construction has been initiated. The general design memorandum is 95 percent complete.

Total costs have been $3,134,966, all for new work.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958, including fiscal years prior to 1954
	1954	1955	1956	1957	1958

New Work
Appropriated	—	—	$550,000	$1,475,000	907,000¹	$3,282,000²
Cost	—	—	590,319	1,349,345	845,302	3,134,966²
¹Includes $57,000 of fiscal year 1959 advance procurement funds. ²Includes $350,000 preauthorization studies.
Other new work data:
Unobligated balance, June 30, 1958						$107,686
Appropriated for succeeding fiscal year ending June 30, 1959						7,463,000
Unobligated balances available for succeeding fiscal year ending June 30, 1959						7,570,686
Estimated additional amount needed to be appropriated for completion of existing project						376,255,000

6. COLUMBIA RIVER AND TRIBUTARIES ABOVE CELILO FALLS TO KENNEWICK, WASH.

Location. This project includes improvement of 128 miles of the Columbia River between the head of Celilo Falls and Kennewick, Wash. (See U.S. Geological Survey Map of Washington.)

Previous Project. The original project was adopted by the River and Harbor Act of June 10, 1872, and modified by the River and Harbor Act of March 2, 1907. For further details, see page 1992 of Annual Report for 1915; page 1889, Annual Report for 1931; and page 1845, Annual Report for 1938.

Existing Project. This provides for a channel 7 feet deep and 150 feet wide at low water from Celilo Falls to Wallula, with no specified depth or width between Wallula and the mouth of the Snake River and for an approach channel 6 feet deep at low water from the navigation channel in the Columbia River to the site of port development at Arlington, Oreg.

The actual cost for new work exclusive of amounts expended on the previous project was $1,356,584. The average annual maintenance cost during the past 5 years was $18,526.

The incompleted channel rectification work at Owyhee Rapids, Squally Hook, Squally Hook and at Indian Rapids, is classified as inactive and is excluded from the foregoing cost estimate. The cost of this portion revised in 1954 is estimated to be $419,000.

Construction of The Dalles Dam and raising of the reservoir has provided a slackwater pool extending upriver to the site of John Day Dam and has provided slackwater over the lower 25 miles of the original project. Creation of the pool behind McNary Dam (90.2 miles above Celilo) has provided slackwater over the upper 36 miles of the original project. The remaining reach of the river included in this project is comprised of approximately 67 miles of open river between The Dalles Pool and McNary Dam. Upon creation of the pool behind John Day Dam, slackwater will also be provided over this reach of the river.

The existing project was authorized by the following:

Acts	Work authorized	Documents¹

Apr. 8, 1935	Emergency Relief Appropriation Act authorized the existing project as an Emergency Relief project.	Rivers and Harbors, Committee Doc. 16, 73d Cong., 2d sess.
Aug. 30, 1935	Adopted existing project as a river and harbor project.	Rivers and Harbors, Committee Doc. 16, 73d Cong., 2d sess.
Mar. 2, 1945	Arlington approach channel	S. Doc. 28, 76th Cong., 1st sess.
Mar. 2, 1945	Kennewick approach channel	H. Doc. 324, 77th Cong., 1st sess.²
¹Contains latest published map. ²Construction of McNary Dam has obviated the necessity for this work.

Local cooperation. The River and Harbor Act approved March 2, 1945, provides that for the Arlington Channel, local interests give assurances that they will construct a suitable freight terminal, open to all on equal terms. These assurances were approved December 29, 1947, but a suitable freight terminal has not been constructed.

Terminal facilities. There is one public dock and terminal on this stretch of river located at Pasco, Wash. (mile 127.2 above Celilo), and owned by the port of Pasco. Located adjacent to the wharf are the following: (a) A bulk grain elevator of 500,000-bushel capacity, and served by rail, water, and truck transportation. Within the structure is a warehouse for handling general cargo. (b) Storage facilities for a total of 11,000,000 gallons of petroleum products, 10,000,000 of which are served by rail, water, truck, and pipeline transportation, the remaining 1,000,000 gallons being served by water and truck only.

Privately owned storage facilities for handling waterborne commerce with capacities and locations are as follows: A bulk grain elevator of 2,000,000-bushel capacity, with rail, truck, and water connections is located at Kennewick, Wash. (mile 127.1 above Celilo); a 300,000-bushel capacity grain elevator at Arlington, Oreg. (mile 40.8 above Celilo); and a 335,000-bushel elevator at Umatilla, Oreg. (mile 88.2 above Celilo). Other facilities for handling bulk grain from truck to river craft, but without rail connections are as follows: A bulk grain elevator of 400,000-bushel capacity at Port Kelley, Wash. (mile 110.8 above Celilo); a 540,000-bushel elevator at Patterson, Wash. (mile 77.4 above Celilo); and directly across the Columbia River from Patterson, Wash., a 670,000-bushel elevator. At Umatilla, Oreg. (between mile 289.4 and 290.2 above the mouth), there are storage facilities for handling approximately 9,200,000 gallons of petroleum products and 448,500 gallons of aqua ammonia, with truck, rail, and water connections. There is a railroad located on each bank of the river, but there is no physical connection between the railroad and the river except as noted. At Irrigon, Oreg. (mile 77.6 above Celilo), there is a privately owned wharf for the shipment of lumber and general cargo by barge. Also, on the Oregon shore across the river from Patterson, Wash., there is a privately owned dock for the shipment of general cargo by barge.

Located on the Snake River, main tributary of the Columbia River (between mouth and mile 2.7), there are privately owned storage facilities for handling the following: Approximately 46,818,000 gallons of petroleum products, with truck, rail, water, and pipeline connections; 11,411,155 pounds of anhydrous ammonia; 893,646 gallons of aqua ammonia; 25,112 gallons of sulphuric acid; 32,606 barrels of asphalt emulsions with truck, rail, and water connections; and storage facilities for 11,199 barrels of bulk cement.

These facilities, with planned extensions, are considered adequate for existing commerce.

Operations and results during fiscal year. New work in this reach of the river is being accomplished and reported in connection with John Day lock and dam project.

Maintenance consisted of dredging at Four O'Clock Rapids, Miller's Drift, Canoe Encampment, and in the entrance to McNary Lock. Soundings were made before and after dredging. The work was performed at a cost of $27,535.

Condition at end of fiscal year. The authorized 7-foot channel 150 feet wide has been completed to McNary lock and dam. The controlling depth between the head of The Dalles pool and McNary Dam is 7 feet, based on a survey in September, 1957. For that portion of the project within McNary pool and The Dalles pool the depths are in excess of 7 feet with minimum depth of 15 feet over upper lock sills.

The Arlington approach channel was completed in 1948.

Total costs have been $2,218,668 of which $1,356,584 (including $400,000 Emergency Relief Administration funds) was for new work and $862,084 for maintenance.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958¹
	1954	1955	1956	1957	1958	Total to June 30, 1958¹

New Work
Appropriated	—	—	—	—	—	$1,851,195
Cost	—	—	—	—	—	1,851,195
Maintenance
Appropriated	$2,600	$53.500	$1,250	$8,000	26,973	962,986
Cost	2,693	53,714	1,203	7,485	27,535	962,914
¹Includes $494,611 for new work and $100,830 for maintenance from previous projects. ²In addition $25,000 for new work was expended from contributed funds.

7. NAVIGATION PROJECTS ON WHICH RECONNAISSANCE AND CONDITION SURVEYS ONLY WERE CONDUCTED DURING THE FISCAL YEAR

Name of Project	Cost during fiscal year	Date reconnaissance or condition survey conducted

Snake River, Lewiston to Johnson Bar Landing	$2,204	Nov. and Dec., 1957
Total cost during fiscal year	2,204

8. OTHER AUTHORIZED NAVIGATION PROJECTS

Name of project	For last full Report see Annual Report for—	Cost and expenditures to June 30, 1958		Estimated amount required to Complete
Name of project	For last full Report see Annual Report for—	Construction	Operation and Maintenance	Estimated amount required to Complete

Umatilla Harbor	1952	—	—	$678,000¹
¹No funds appropriated for work. Inactive.

9. COLUMBIA RIVER BASIN, LOCAL FLOOD-PROTECTION PROECTS

Location. The improvements included in this project are located along the Columbia River and its tributaries within the confines of the Walla Walla, Wash., District.

Existing Project. The Flood Control Act approved May 17, 1950, approved a general comprehensive plan for the Columbia River Basin for flood control and other purposes as set forth in House Document 531, 81st Congress, 2d session, and authorized to be appropriated the sum of $75,000,000 to be appropriated for the partial accomplishment of certain projects. Of this authorization, an amount not to exceed $15,000,000 was authorized for local flood-protection works throughout the Columbia River Basin, subject to the conditions that all work undertaken pursuant to this authority shall be economically justified prior to construction, and local cooperation specified in the 1936 Flood Control Act, as amended, shall be required. Protection to the following areas, located in the Walla Walla district, is being considered under this latter authorization.

Project	Federal Cost	Status June 30, 1958
Project	Federal Cost	Appropriated	Cost

Teton River, Idaho (not justified)		$10,387	$10,387
Heise-Roberts Extension, Idaho	$5,650,000	30,000	23,286
Mud Lake Area, Idaho (not justified)		5,996	5,996
Shelley Area, Snake River, Idaho¹	32,335	32,335	32,335
Blackfoot Area, Snake River, Idaho¹	42,796	42,796	42,796
Blackfoot River, Idaho¹	416,000	11,900	11,894
Portneuf River and Marsh Creek, Idaho¹	1,317,000	569,200	103,476
Little Wood River, Idaho¹	70,000	6,000	6,003³
Camas Creek, Idaho	838,000	18,000	3,440
Boise Valley, Idaho	650,000	35,000	33,704
Malheur River, Oregon¹	657,000	41,700	35,369
Payette Valley, Idaho	1,330,000	33,000	20,260
Weiser River, Idaho¹	2,940,000	87,148	21,670
Whitebird Creek, Idaho²		1,896	1,896
Grande Ronde Valley, Oregon¹	7,908,000	133,458	133,458
South Fork Clearwater River, Idaho²		3,899	3,899
Kendrick, Potlatch River, Idaho¹	112,700	109,931	14,812
Palouse River, Washington	628,000	2,000	2,000
Mill Creek, Washington (not justified)		3,537	3,537
Touchet River, Washington (not justified)		11,198	11,198
Lower Walla Walla River, Washington (not justified)		4,000	4,000
Umatilla River, Oregon¹	510,000	20,000	18,899
John Day River Area, Oregon	663,000	9,000	9,000
¹The economic justification of work proposed for this area has been established in compliance with conditions set forth in the Flood Control Act of 1950. Reported in detail in an individual report. ²Emergency work at these locations have obviated necessity for their construction. ³Exceeds funds appropriated as a result of the 1958 retroactive pay increase. Note: This list does not include improvements in Portland and Seattle districts.

Local Cooperation. Section 3 of the Flood Control Act approved June 22, 1936, as amended, applies to all the flood-control projects.

Operations and results during fiscal year. Justification reports were completed for the following locations: Blackfoot River, Mud Lake, Little Wood River, Idaho; and Touchet River, Washington. Justification reports were continued for the following locations in Idaho: Payette Valley, Boise Valley, Camas Creek, and Heise-Roberts extension. General design memoranda were initiated for Malheur River and Umatilla River, Oregon; and for Weiser River, Idaho. Plans and specifications were deferred for the Pocatello Unit of Portneuf River and Marsh Creek, Idaho project, due to inability of the local interests to fulfill sponsorship agreements. Plans and specifications were completed for the following: Kendrick, Shelley area and Blackfoot Area, Idaho. Total costs for the fiscal year were $141,483.

Condition at end of fiscal year. Justification reports for Teton River and Mud Lake, Idaho; and Mill Creek, Lower Walla Walla River, and Touchet River, Washington locations are complete with negative findings. Justification reports completed for the locations South Fork Clearwater River, Idaho; and Whitebird Creek, Idaho, determined that work constructed under emergency authorizations fulfill protective requirements at these locations.

Justification for the Grande Ronde Valley project is provided in a survey report completed in fiscal year 1951. Justification for the Pocatello unit of the Portneuf River and Marsh Creek project is provided in a survey report completed in fiscal year 1953.

Justification reports have been completed and recommend additional planning studies or construction of flood-protective works at the following locations: (a) Blackfoot area, Snake River; Shelley area, Snake River; Kendrick, Potlatch River; Blackfoot River; Little Wood River; and Weiser River in Idaho; (b) Malheur River, and Umatilla River, in Oregon; and (c) Touchet River in Washington.

Continuation of justification reports and percentages of completion include the following: Boise Valley, Idaho, 80 percent; Camas Creek, Idaho, 10 percent; Heise-Roberts extension, Idaho, 40 percent; and Payette Valley, Idaho, 75 percent.

Upstream storage investigations report on Grande Ronde Valley, Oregon location, is complete and recommends construction of channel improvements in the valley which can be coordinated with upstream storage at a later date. A general design memorandum for Grande Ronde Valley has been completed but recommends deferment of future planning studies until local interests are willing and able to provide the necessary assurance of cooperation. A general design memorandum has been completed and recommends construction of flood protective works for Kendrick, Potlatch River, Idaho. Continuation of general design memorandum and percentages of completion include the following: Weiser River, Idaho, 5 percent; Malheur River, Vale unit, Oregon, 95 percent; and the Willow Creek unit, 25 percent; and Umatilla River, Oregon, 60 percent.

Plans and specifications for the Pocatello unit of Portneuf River and Marsh Creek, Idaho project are 87 percent complete. Plans and specifications of flood protective works are completed for the following: Kendrick, Shelley area and Blackfoot area, Idaho. Construction has been completed on the Shelley area and Blackfoot area.

Total costs have been $408,515.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958¹
	1954	1955	1956	1957	1958	Total to June 30, 1958¹

New Work
Appropriated	$23,000	$2,200	—$276	$76,795	—$5	$167,913
Cost	13,271	4,713	4,165	21,055	23,399	132,603
Other new work data:
Unobligated balance, fiscal year ending June 30, 1958						$35,310
Unobligated balances available for succeeding fiscal year ending June 30, 1959						35,310
¹Excludes Shelley area, Snake River, Idaho; Blackfoot area, Snake River, Idaho; Blackfoot River, Idaho; Portneuf River and Marsh Creek, Idaho; Little Wood River, Idaho; Malheur River, Oreg.; Weiser River, Idaho; Grande Ronde Valley, Oreg.; Kendrick, Potlatch River, Idaho; Umatilla River, Oreg.; reported in detail in individual report. Does not include amounts of improvements in Portland and Seattle districts as follows:
					Appropriated	Cost
Prineville, Crooked River, Oreg.					$5,702	$5,702
Randle, Cowlitz River, Wash.					7,412	7,412
Lower Cowlitz River, Wash.					12,000	9,960
Lightning Creek, Clark Fork, Idaho					4,000	4,000
Clark Fork at Missoula, Mont.					2,000	2,000
St. Regis River, Mont.					4,000	4,000
Crab and Wilson Creeks, Wash.					8,100	8,100
Yakima River at Ellensburg, Wash.					25,000	25,000
Total					$68,014	66,543

10. JACKSON HOLE, SNAKE RIVER, WYO.

Location. This project is located on both banks of the Snake River in the vicinity of Wilson, Wyo.

Existing Project. The plan of improvement provides for a levee with full riprap protection on the right bank, extending from a knoll at the Circle H Ranch, which is approximately 9.2 miles upstream from the Jackson-Wilson Highway Bridge, to a point approximately 2.5 miles below the same bridge, a total length of 11.7 miles; also a levee with full riprap protection along the left bank, extending approximately 0.9 of a mile immediately upstream from the Jackson-Wilson Highway Bridge. The existing project was authorized by the Flood Control Act approved May 17, 1950 (Public Law 516, 81st Cong., 2d sess.). The estimated cost revised in 1958 is $2,700,000 for construction. The costs of rights-of-way are to be paid by local interests.

Local cooperation. Section 3 of the Flood Control Act approved June 22, 1936, as amended, applies.

Formal assurance of local cooperation of Teton County, Wyo., the sponsoring agency, supported by a commitment of the incumbent Governor of Wyoming to provide financial aid from emergency funds during the remainder of his tenure of office and that recommendation would be made to the State Legislature for enabling legislation to permit continued State aid for the non-Federal costs was accepted with the express understanding that construction would be limited to the work on both banks of the river upstream from the Jackson-Wilson Bridge pending action by the State legislature.

Operations and results during fiscal year. Construction of levees and relocation of irrigation headgates in the first 5 miles along the right bank immediately upstream from the Jackson-Wilson Bridge was initiated under a continuing contract and is 83 percent complete. Plans and specifications for the remaining work along the right bank upstream from the Jackson-Wilson Bridge are 85 percent complete. Total costs during the fiscal year were $417,977, all for new work.

Condition at end of fiscal year. Construction of the existing project was initiated in November 1957, and is 21 percent complete. Plans and specifications for the remaining work on the right bank upstream from the Jackson-Wilson Bridge are 85 percent complete. Surveys for the work on the left bank upstream from the Jackson-Wilson Bridge are complete. Total costs have been $556,855.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958, including fiscal years prior to 1954
	1954	1955	1956	1957	1958

New Work
Appropriated	—	$53,000	$45,000	$400,000	56,000¹	$566,000¹
Cost	—	52,386	42,959	31,532	417,977	556,855²
¹Includes $6,000 of fiscal year 1959 advance procurement funds. ²Includes $12,000 preauthorization studies.
Other new work data:
Unobligated balance, June 30, 1958						$9,145
Appropriated for succeeding fiscal year ending June 30, 1959						394,000
Unobligated balances available for succeeding fiscal year ending June 30, 1959						403,145
Estimated additional amount needed to be appropriated for completion of existing project						1,740,000

11. SHELLEY AREA, SNAKE RIVER, COLUMBIA RIVER BASIN, IDAHO

Location. This project is located along the left bank of Snake River about 4 miles southwest of the town of Shelley in Bingham County, Idaho.

Existing project. The project provided for construction of a revetted levee along 1,000 linear feet of left bank of the Snake River.

Rights-of-way were furnished by local interests.

Local Cooperation. Section 3 of the Flood Control Act approved June 22, 1936, as amended, applies.

Operations and results during fiscal year. Plans and specifications were completed and the entire project was constructed by contract. Total costs during the fiscal year were $30,762.

Condition at end of fiscal year. Construction of the project began in January 1958, and was completed in March 1958. Total costs have been $32,335.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958, including fiscal years prior to 1954
	1954	1955	1956	1957	1958

New Work
Appropriated	—	—	—	$1,573	$30,762	$32,335
Cost	—	—	—	1,573	30,762	32,335

12. BLACKFOOT AREA, SNAKE RIVER, COLUMBIA RIVER BASIN, IDAHO

Location. This project is located along the left bank of Snake River about eight miles west of Blackfoot in Bingham County, Idaho.

Existing project. The project provides for construction of a revetted levee along approximately 1900 linear feet of the left bank of Snake River.

The existing project was authorized under the Columbia River Basin Plan by the Flood Control Act approved May 17, 1950 (Public Law 516, 81st Cong., 2d sess.) subject to economic justification. Economic justification was established in fiscal year 1957. Right-of-way was furnished by local interests.

Local Cooperation. Section 3 of the Flood Control Act approved June 22, 1936, as amended, applies.

Operations and results during fiscal year. Plans and specifications were completed and the entire project was constructed by contract. Total costs during the fiscal year were $40,763.

Condition at end of fiscal year. Construction of the project was initiated in November, 1957, and was completed in January, 1958. Total costs have been $42,796.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958
	1954	1955	1956	1957	1958	Total to June 30, 1958

New Work
Appropriated	—	—	—	$43,093	—$297	$42,796
Cost	—	—	—	2,093	40,703	42,796

13. BLACKFOOT RIVER, COLUMBIA RIVER BASIN, IDAHO

Location. This project is located on the Blackfoot River on the eastern boundary of the Fort Hall Indian Reservation near the city of Blackfoot in Bingham County, Idaho.

Existing project. The project provides for widening, deepening, and shortening the river channel and for erection of levees throughout the lower 16 miles of the river.

The existing project was conditionally authorized under section 204 of the Flood Control Act, approved May 17, 1950 (Public Law 516, 81st Cong., 2d sess.), subject to economic justification. Economic justification was established in fiscal year 1958. The estimated cost, revised in 1958 is $416,000 for construction.

Rights-of-way and relocations of public utilities and bridges will be furnished by local interests.

Local Cooperation. Section 3 of the Flood Control Act approved June 22, 1936, as amended, applies.

Operations and results during fiscal year. Design memorandum No. 1—justification report—was completed. Total costs during fiscal year were $815.

Condition at end of fiscal year. Justification report is complete. No construction has been done. Total costs have been $11,894.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958
	1954	1955	1956	1957	1958	Total to June 30, 1958

New Work
Appropriated	—	—	—	$10,000	—	$11,000¹
Cost	—	—	—	9,179;	$815	11,894¹
¹Includes $1,900 preauthorization studies.
Other new work data:
Unobligated balance, June 30, 1958						$6
Unobligated balances available for succeeding fiscal year ending June 30, 1959						6
Estimated additional amount needed to be appropriated for completion of existing project						404,100

14. PORTNEUF RIVER AND MARSH CREEK, COLUMBIA RIVER BASIN, IDAHO

Location. This project is located at three areas along the Portneuf River and along the entire length of its main tributary, Marsh Creek, all in southeastern Idaho.

Existing Project. The plan of improvement provides for channel straightening and improvement, removal of obstructions and construction of new levees and revetments or improvements to existing levees in the Blackrock area, in and adjacent to the city of Pocatello, Idaho, and in the vicinity of Inkom, Idaho, all on the Portneuf River, and channel improvement along the lower 39 miles of Marsh Creek.

The existing project was authorized under the Columbia River Basin Plan by the Flood Control Act approved May 17, 1950, (Public Law 516, 81st Cong., 2 sess.) subject to economic justification. Justification was provided by a survey report completed in fiscal year 1953. The estimated cost of this unit, revised in 1958, is $700,000 for construction. Local interests in the Inkom-Marsh Creek area have expressed little desire to participate in the plan of improvement and economic justification for that part of the project has not been established. The estimated cost of this unit, revised in 1958, is $617,000 for construction, or a total estimated cost for the entire project of $1,317,000.

Local Cooperation. Section 3 of the Flood Control Act approved June 22, 1936, as amended, applies.

Operations and results during fiscal year. None. There were no costs.

Condition at end of fiscal year. Economic justification of the Pocatello unit of the project is complete and that part of the project is considered fully authorized. Plans and specifications for this unit are 85 percent complete. All work has been deferred pending the enactment of enabling legislation by the State legislature which is required in order that local interests may comply with the requirements of local cooperation. No further work is proposed at this time on the Inkom-Marsh Creek area. No construction work has been done. Total costs have been $103,476.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958
	1954	1955	1956	1957	1958	Total to June 30, 1958

New Work
Appropriated	$20,000	$19,000	$500,000	—	—	$569,200¹
Cost	17,766	14,021	41,296	$193	—	103,476¹
Other new work data:
Unobligated balance, June 30, 1958						$465,724
Unobligated balance available for succeeding fiscal year ending June 30, 1959						465,724
Estimated additional amount needed to be appropriated for completion of existing project						747,800

15. LITTLE WOOD RIVER, COLUMBIA RIVER BASIN, IDAHO

Location. The project is located in south-central Idaho approximately 65 miles north of Twin Falls, in the vicinity of Carey.

Existing project. The plan of improvement provides for intermittent channel rectification, levees and a diversion into the lava beds downstream from the town of Carey.

The existing project was authorized under the Columbia River Basin plan by the Flood Control Act approved May 17, 1950 (Public Law 516, 81st Cong., 2d sess.) subject to economic justification. Economic justification was established in fiscal year 1958. The estimated cost, revised in 1958, is $64,000 for construction. Rights-of-way, relocations and alteration of existing facilities are the responsibility of local interests.

Local Cooperation. Section 3 of the Flood Control Act approved June 22, 1936, as amended, applies.

Operations and results during fiscal year. Economic justification report was completed and approved. Total costs during the fiscal year were $371.

Condition at end of fiscal year. Economic justification is complete and project is considered fully authorized. No construction has been accomplished. Total costs have been $6,003.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958,
	1954	1955	1956	1957	1958	Total to June 30, 1958,

New Work
Appropriated	—	—	—	$6,000	—	$6,000
Cost	—	—	—	5,632	$371	6,003¹
Other new work data:
Unobligated balance, June 30, 1958						—$3
Appropriated for succeeding fiscal year ending June 30, 1959						58,000
Unobligated balances available for succeeding fiscal year ending June 30, 1959						57,997

16. LUCKY PEAK RESERVOIR, BOISE RIVER, IDAHO

Location. On the Boise River in southwestern Idaho approximately 9 miles southeast of the city of Boise, and approximately 12 miles downstream from Arrowrock Reservoir.

Existing Project. The plan of improvement provides for construction of a rolled earth-fill dam approximately 250 feet high and 1,700 feet long at the crest, with a reservoir providing a total storage, at normal pool level, of 306,000 acre-feet. The ungated ogee type spillway with unlined channel is located on the left abutment and is designed to pass 93,000 cubic feet per second at maximum pool. The outlet works located on the left abutment consist of a tunnel controlled by six 5-feet by 10-feet slide gate valves.

The plan contemplates the joint use of storage in Lucky Peak, Arrowrock, and Anderson Ranch Reservoirs. Operations of the dam as a flood-control facility will be by the Department of the Army under the direction of the Secretary of the Army with the understanding that complete or partial joint use of the storage in the three reservoirs may be undertaken at such time as may be agreed upon by the Secretary of the Army, Secretary of the Interior, and local interests concerned with flood control and use of irrigation water. The existing project was authorized by the Flood Control Act approved July 24, 1946. The latest (1958) approved estimated project cost is $20,400,000. The average annual maintenance cost during the first 5 years was $52,757.

Local Cooperation. No conditions were imposed by law.

Operations and results during fiscal year. New Work: Repair of slides on State Highway No. 21 were completed by contract. The State of Idaho initiated final surfacing of State Highway No. 21. Access roads, parking areas, and launching ramps were constructed by contract at three public use areas.

Maintenance: Normal operation and maintenance of the project continued.

Total costs during the fiscal year were $370,927 for new work and $81,662 for maintenance.

Condition at end of fiscal year. Construction of the existing project which was initiated in November 1947 is 91 percent complete. The dam and appurtenant works are complete. Relocation of State and county roads is 78 percent complete, recreation facilities are 48 percent complete, and permanent operating equipment is 85 percent complete. Revisions to Arrowrock Dam by the Bureau of Reclamation are complete.

Total costs have been $18,548,898 for new work and $211,029 for maintenance.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958
	1954	1955	1956	1957	1958	Total to June 30, 1958

New Work
Appropriated	$1,500,000	$1,750,000	$500,000	—	$70,000	$18,775,000
Cost	3,670,796	1,621,116	372,809	$148,461	370,927	18,548,898
Maintenance
Appropriated		9,760	56,000	65,000	80,600¹	211,360
Cost		9,668	54,858	64,841	81,662	211,029
¹Includes $1,600 of fiscal year 1959 advance procurement funds.
Other new work data:
Unobligated balance, June 30, 1958						$21,828
Unobligated balance available for succeeding fiscal year ending June 30, 1959						21,828
Estimated additional amount needed to be appropriated for completion of existing project						1,625,000

17. MALHEUR RIVER, COLUMBIA RIVER BASIN, OREG.

Location. This project is located along Willow Creek, Bully Creek, and Malheur River in the vicinity of Vale in Malheur County, Oreg.

Existing Project. The project provides for channel improvements, levees, and bank stabilization on approximately 2 miles of the Malheur River, and about 1 mile of Bully Creek above its confluence with the Malheur River in the vicinity of Vale, Oreg. The project also includes channel improvements and levees in the lower 24 miles of Willow Creek.

The existing project was authorized under the Columbia River Basin Plan by the Flood Control Act approved May 17, 1950 (Public Law 516, 81st Cong., 2d sess.) subject to economic justification. The economic justification of this work was established in fiscal year 1957. The estimated cost revised in 1958 is $657,000. Rights-of-way, relocations, and alterations to existing facilities are the responsibility of local interests.

Local Cooperation. Section 3 of the flood Control Act approved June 22, 1936, as amended, applies. In addition, local interests must accomplish all relocations and alterations to existing facilities at their own expense.

Operations and results during fiscal year. General design memorandum was initiated and an interim report on the Vale unit is being prepared. The general design memorandum for the Willow Creek unit has been deferred for submission in fiscal year 1959. Total costs during the fiscal year were $18,997.

Condition at end of fiscal year. The economic justification report is complete and project is considered fully authorized. Interim report for general design memorandum on the Value unit is 95 percent complete. No construction has been done. Total costs have been $35,369.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958
	1954	1955	1956	1957	1958	Total to June 30, 1958

New Work
Appropriated	—	$5,000	$6,000	—	$25,000	$41,700¹
Cost	—	185	10,074	$413	18,997	35,369¹
Other new work data:
Unobligated balance, fiscal year ending June 30, 1958						$6,331
Unobligated balances available for succeeding fiscal year ending June 30, 1959						6,331
Estimated additional amount needed to be appropriated for completion of existing project						615,300

18. WEISER RIVER, COLUMBIA RIVER BASIN, IDAHO

Location. This project is located along Weiser River in the vicinities of Weiser, Midvale, and Cambridge in Washington County, Idaho.

Existing Project. The project provides for channel rectification and levees along Weiser River for 13 miles near Weiser, 7 miles in the vicinity of Midvale, and 7 miles in the vicinity of Cambridge.

The existing project was authorized under the Flood Control Act approved May 17, 1950 (PL 516, 81st Cong., 2d Sess.), subject to economic justification. Economic justification was established in 1956.

The estimated Federal cost, revised in 1958, is $2,940,000. The costs of rights-of-way and highway and utility revisions will be paid by local interests.

Local Cooperation. Section 3 of the flood Control Act approved June 22, 1936, as amended, applies. In addition, local interests must accomplish all relocations at their own expense.

Operations and results during fiscal year. Preparation of a general design memorandum was initiated. Total costs during the fiscal year were $4,522.

Condition at end of fiscal year. Economic justification was established in 1956 and project is considered fully authorized. General design memorandum is 5 percent complete. No construction has been done. Total costs have been $21,670.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958
	1954	1955	1956	1957	1958	Total to June 30, 1958

New Work
Appropriated	$7,000	$9,000	—$4,000	—$852	$70,000	$87,148¹
Cost	5.349	2,212	3,461	127	4,522	21,670¹
¹Includes $6,000 preauthorization studies.
Other new work data:
Unobligated balance, fiscal year ending June 30, 1958						$65,382
Unobligated balances available for succeeding fiscal year ending June 30, 1959						65,382
Estimated additional amount needed to be appropriated for completion of existing project						2,852,852

19. GRANDE RONDE VALLEY, COLUMBIA RIVER BASIN, OREG.

Location. This project is located along Grande Ronde River; Catherine, Willow and Ladd Creeks; and lower reaches of several small tributaries, all in the eastern part of Oregon.

Existing Project. This project provides for channel improvement and construction of levees on both banks of Grande Ronde River between La Grande and Elgin; on Catherine Creek through Union downstream, including the old channel of Grande Ronde River; on Willow and Ladd Creeks; and on the lower reaches of several small tributaries.

The existing project was authorized under the Columbia River Basin Plan by the Flood Control Act approved May 17, 1950 (Public Law 516, 81st Congress, 2d Sess.) subject to economic justification. The economic justification of this work was established in 1951. The estimated cost revised in 1958 is $7,980,000 for construction. The costs of rights-of-way and highway and utility revisions will be paid by local interests.

Local Cooperation. Section 3 of the flood Control Act approved June 22, 1936, as amended, applies. In addition to the usual requirements local interests are required to accomplish, at their own expense, any highway and utility relocations.

Operations and results during fiscal year. There were no costs during the fiscal year.

Condition at end of fiscal year. Upstream storage investigations and general design memorandum are complete. No construction has been done. Total costs have been $133,458.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958
	1954	1955	1956	1957	1958	Total to June 30, 1958

New Work
Appropriated	$10,000	$30,000	$45,000	$17,500	—$42	$133,458¹
Cost	967	32,328	51,348	17,815	—	133,458¹
¹Includes $31,000 preauthorization studies.
Other new work data:
Estimated additional amount needed to be appropriated for completion of existing project						$7,846,542

20. KENDRICK, POTLATCH RIVER, COLUMBIA RIVER BASIN, IDAHO

Location. This project is located along Potlatch River at Kendrick in Latah County, Idaho.

Existing Project. The project provides channel rectification and construction of a revetted levee along some 3,000 linear feet of the right bank of Potlatch River.

The existing project was authorized under the Columbia River Basin Plan by the Flood Control Act approved May 17, 1950 (Public Law 516, 81st Cong., 2d sess.) subject to economic justification. Economic justification of this work was established in fiscal year 1956. The estimated cost revised in 1958 is $112,700. Rights-of-way and highway and utility relocations will be paid by local interests.

Local Cooperation. Section 3 of the flood Control Act approved June 22, 1936, as amended, applies. In addition, local interests must accomplish all relocations at their own expense.

Operations and results during fiscal year. Plans and specifications were completed. Total costs for the fiscal year were $7,015.

Condition at end of fiscal year. No construction has been done. Total costs have been $14,812.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958
	1954	1955	1956	1957	1958	Total to June 30, 1958

New Work
Appropriated	—	$4,000	—$69	$4,000	$102,000	$109,931
Cost	—	2,313	1,618	3,866	7,051	14,812
Other new work data:
Unobligated balance, fiscal year ending June 30, 1958						$95,119
Unobligated balances available for succeeding fiscal year ending June 30, 1959						95,119
Estimated additional amount needed to be appropriated for completion of existing project						2,769

21. COLFAX, PALOUSE RIVER, WASHINGTON

Location. This project is located on the Palouse River and the south fork of the Palouse River at and adjacent to their confluence and on Spring Flat Creek in eastern Washington.

Existing Project. This provides for flood control works in the vicinity of and through Colfax, Wash., by channel enlargement and modification, levees, floodwalls, revetments, and modification of railroad bridges. The estimated cost revised in 1958 is $3,020,000 for construction. The cost of lands and damages is to be paid by local interests.

The existing project was authorized by the Flood Control Act approved December 22, 1944 (H. Doc. 888, 77th Cong., 2d sess.).

Local Cooperation. Section 3 of the Flood Control Act approved June 22, 1936, as amended, applies. In addition to the usual requirements, local interests are required to accomplish at their own expense the street and bridge modifications necessary for the construction of the project.

Operation and results during fiscal year. Preparation of specific design memorandum was continued. Total cost for the fiscal year were $19,516.

Condition at end of fiscal year. Specific design memorandum is 12 percent complete. No construction work has been done. Total costs have been $137,498.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958
	1954	1955	1956	1957	1958	Total to June 30, 1958

New Work
Appropriated	—	$7,000	$40,000	—	$136,000	$260,651¹
Cost	—	7,319	18,827	$14,184	19,516	137,498¹
¹Includes $3,800 preauthorization studies.
Other new work data:
Unobligated balance, fiscal year ending June 30, 1958						$123,108
Unobligated balances available for succeeding fiscal year ending June 30, 1959						123,108
Estimated additional amount needed to be appropriated for completion of existing project						2,759,349

22. MILL CREEK, WASH.

Location. Near Walla Walla, Wash., on Mill Creek, a tributary of the Walla Walla River.

Existing Project. The plan of improvement provides for construction of flood-control works consisting of a storage dam, outlet works, diversion works, division structures and improvement of a stretch of Mill Creek Channel, including the reconstruction of the Otis and Merriam Street Bridges across Mill Creek in the city of Walla Walla, Wash.

The storage dam, which will form a reservoir of 6,000 acre-feet capacity, is a rolled earth fill structure 145 feet high, 3,200 feet long at the crest, and 800 feet wide at the base. Flood water is diverted storage by means of diversion work on Mill Creek consisting of a rolled earth fill dam 1,700 feet long and 20 feet high, with a concrete spillway section and headworks at the left abutment, and a concrete-lined canal leading from the headworks to the storage reservoir. Stored water is subsequently released through outlet works consisting of a steel-lined concrete conduit through the base of the storage dam and a canal 5,900 feet in length from the dam to Mill creek. The normal flow of water past the diversion works is apportioned, by means of two concrete division structures, to the three delta streams, Yellowhawk, Garrison, and Mill Creek. The project will control the entire Mill Creek drainage area of 85 square miles and care for a flood of 11,400 second-feet. The existing project was authorized by the Flood Control Act approved June 28, 1938. The Flood Control Act approved August 18, 1941, modified the project in accordance with the recommendations of the Chief of Engineers in House Document 719, 76th Congress, 3d session. Cost of the completed project was $2,162,155. The average annual maintenance cost during the past 5 years, excluding $133,155 for rehabilitation of channel weirs and relocation of gaging station in fiscal year 1957, was $17,825.

Local Cooperation. For the project, except for Mill Creek through the city of Walla Walla, section 2 of the Flood Control Act approved June 28, 1938, applies. For the section of Mill Creek through the city of Walla Walla, Wash., local interests will provide without cost to the United States all lands, easements, and rights-of-way necessary for construction of the project, and hold and save the United States free from claims for damages resulting from improvement. Assurances of compliance with these requirements received from local interests were approved by the Division Engineer, March 2, 1948. Local interests have contributed $80,000 toward the cost of channel improvement through the city of Walla Walla.

Operations and results during fiscal year. Maintenance: Ordinary operations and maintenance were continued. Reservoir regulation was routine except diversion for bed sealing. Total costs for the fiscal year were $18,828, all for maintenance.

Condition at end of fiscal year. Construction of the dam and appurtenant works was completed in 1942. An auxiliary outlet canal from the dam to Russell Creek and construction of additional drainage at the toe of the dam were completed in 1944. Paving of the channel through the city of Walla Walla was completed in 1948. Compaction of reservoir area, installation of seepage relief wells, grouting of interior drains, and installation of new sluice gate were completed in 1949 and 1950. Capping of 84 channel stabilizers with concrete, and relocation of the gaging station were completed in 1957. Diversion of water for bed sealing operations initiated in 1952 is being continued as conditions permit.

Total costs have been $2,162,155 was for new work and $602,543 for maintenance. In addition, costs for new work from contributed funds amounted to $80,000.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958¹
	1954	1955	1956	1957	1958	Total to June 30, 1958¹

New Work
Appropriated	—	—	—	—	—	$2,162,155
Cost	—	—	—	—	—	2,162,155
Maintenance
Appropriated	$13,500	$15,180	$134,750	$34,450	$18,900²	602,880
Cost	17,459	16,583	19,630	149,778	18,828	602,543
¹In addition, $80,000 for new work was expended from contributed funds. ²Includes $400 of fiscal year 1959 advance procurement funds.

23. PENDLETON, UMATILLA RIVER, OREG.

Location. This project is located on the Umatilla River in and adjacent to the city of Pendleton, Oreg.

Existing Project. The plan of improvement provides for a levee system in the Riverside area upstream from the Pendleton city limits; improvement of the channel, and strengthening the existing levees through the city of Pendleton, and raising, rehabilitating, and extending existing levees in the State hospital area. The existing project was authorized by the Flood Control Act approved May 17, 1950 (Public Law 516, 81st Cong., 2d sess.). The estimated cost, revised in 1958, is $446,000 for construction excluding the Riverside Area due to unwillingness of local interests to provide the required local cooperation. The costs of rights-of-way, utility relocations, and reconstruction of irrigation diversions are to be paid by local interests. The project will provide protection against a flood of 28,000 second-feet in the Umatilla River through and adjacent to Pendleton, Oreg.

Local Cooperation. Section 3 of the Flood Control Act approved June 22, 1936, as amended, applies. In addition to the usual requirements, local interests are required to accomplish, at their own expense, any utility relocations and irrigation diversions necessary for the construction of the project.

Operations and results during fiscal year. Preparation of plans and specifications continued throughout the fiscal year. Total costs during the fiscal year were $6,468.

Condition at end of fiscal year. Plans and specifications are 85 percent complete. No construction has been done. Total costs have been $52,046.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958
	1954	1955	1956	1957	1958	Total to June 30, 1958

New Work
Appropriated	—	$15,000	$5,700	$25,000	$400,000	$445,700¹
Cost	—	10,000	9,187	25,482	6,468	52,046²
Includes $200,000 loaned to other projects in fiscal year 1958. ²Includes $200,000 loaned to other projects.
Other new work data:
Unobligated balance, fiscal year ending June 30, 1958						$393,654²
Unobligated balances available for succeeding fiscal year ending June 30, 1959						393,654²

24. UMATILLA RIVER, COLUMBIA RIVER BASIN, OREG.

Location. This project is located along Umatilla River in the vicinity of the town of Echo, Umatilla County, Oreg.

Existing Project. The project provides for channel rectification, construction of levees, and intermittent bank protection throughout a 5-mile reach between river miles 24.5 and 29.5 of Umatilla River.

The existing project was authorized by the Flood Control Act approved May 17, 1950 (Public Law 516, 81st Cong. 2d sess.) subject to economic justification. Economic justification has since been established and the project is now considered fully authorized.

The estimated cost revised in 1958 is $510,000. Costs of rights-of-way and relocations will be paid by local interests.

Local Cooperation. Section 3 of the Flood Control Act approved June 22, 1936, as amended, applies. In addition to the usual requirements, local interests must accomplish at their own expense relocations of public utilities.

Operations and results during fiscal year. General design memorandum was initiated. Total costs during fiscal year were $14,899.

Condition at end of fiscal year. The economic justification was established in 1955. General design memorandum is 60 percent complete. No construction has been done. Total costs have been $18,899.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958
	1954	1955	1956	1957	1958	Total to June 30, 1958

New Work
Appropriated	—	—	—	—	$16,000	$20,000¹
Cost	—	—	—	—	14,899	18,899¹
Other new work data:
Unobligated balance, June 30, 1958						$1,101
Unobligated balances available for succeeding fiscal year ending June 30, 1959						1,101
Estimated additional amount needed to be appropriated for completion of existing project						490,000

25. OTHER AUTHORIZED FLOOD CONTROL PROJECTS

Name of project	For last full Report see Annual Report for—	Cost and expenditures to June 30, 1958		Estimated amount required to complete
Name of project	For last full Report see Annual Report for—	Construction	Operation and Maintenance	Estimated amount required to complete

Arlington, Alkali Canyon, Oreg.	1950	$20,112	—	$492,688¹
Dayton, Touchet River, Washington	1953	16,064	—	683,936²
Heise-Roberts Area, Snake River, Idaho	1955	1,575,838	—	⁽³⁾
Lewiston-Clarkston Levees	1950	—	—	4,750,000^2,4
Malheur Improvement Dist., Snake River, Oreg.	1957	55,894	—	⁽³⁾
Milton-Freewater, Walla Walla River, Oreg.	1956	886,956	—	⁽³⁾
Pendleton, Umatilla River, Oreg.	1939	143,263	—	(3)
Pilot Rock, Birch Creek, Oreg.	1949	3,700	—	301,300²
Pullman, Palouse River, Washington	1953	49,267	—	1,810,733²
(1) Inactive. Last cost estimate revised in 1954. (2) Inactive. Last cost estimate revised in 1958. (3) Completed. (4) No funds appropriated for work.

26. INSPECTION OF COMPLETED FLOOD CONTROL WORKS

Projects authorized subject to specific conditions of local cooperation are transferred to responsible local interests upon completion of construction for operation and maintenance in accordance with the requirements of the authorizing legislation. Inspections are made to determine compliance of local interests with assurances given regarding operation and maintenance and the physical condition of the improvements. Local interests were advised, as necessary, of measures required to maintain these projects in accordance with the standards prescribed by the regulation.

Operations and results during fiscal year.The number of projects inspected during the fiscal year in various river basins are summarized:

River Basins	Inspections	River Basins	Inspections

Blackfoot	1	Portneuf	1
Boise	52	Salmon	4
Grande Ronde	1	Snake	9
Clearwater	7	Touchet	2
Gros Ventre	2	Umatilla	1
Little Salmon	1	Walla Walla	2
Little Wood	4	Weiser	10
Owyhee	1	Yakima	1
Payette	15

Total costs during the fiscal year were $6,101.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1958
	1954	1955	1956	1957	1958	Total to June 30, 1958

Maintenance:
Appropriated	—	$300	$3,000	$3,000	$6,200	$15,000
Cost	$324	999	3,040	3,032	6,101	14,901

27. FLOOD CONTROL WORK UNDER SPECIAL AUTHORIZATION

Snagging and clearing of navigable streams and tributaries in the interests of flood control. (Sec. 208 of the 1954 Flood Control Act, Public Law 780, 83 Cong., 3 Sept. 1954.)

Project	Location	Date authorized	Date of construction start	Date completed	Federal cost fiscal year 1958¹

Little Wood River	Gooding, Idaho	Oct. 1, 1957	Oct. 1957	Nov. 1957	$5,439²
Soldier Creek	Vicinity Fairfield, Idaho	Oct. 1, 1957	Oct. 1957	Nov. 1957	14,130
Orofino Creek	Orofino, Idaho	Oct. 1, 1957	Oct. 1957	Dec. 1957	15,164
Middle Fork, Clearwater River	Kooskia, Idaho	Jan. 3, 1958	Mar. 1958	Apr. 1958	36,596
Grande Ronde River	Lange-Voelz, Oreg	Oct. 1, 1958	⁽²⁾	—	1,179
¹Actual cost ²Work delayed due to lack of local cooperation.

Emergency bank protection (sec. 14 of the 1946 Flood Control Act, Public Law 526, 79th Cong., July 24, 1946.

Project	Location	Date authorized	Date of construction start	Date completed	Federal cost fiscal year 1958¹

Big Canyon Creek	Peck, Idaho	Apr. 11, 1958	—	—	$2,754
¹Actual cost

Small flood-control projects not specifically authorized by Congress (Sec. 212 of the 1950 Flood Control Act).

Project	Location	Date authorized	Date of construction start	Date completed	Federal cost fiscal year 1958¹

Little Wood River	Shoshone, Idaho	—	Not started	—	4,023
Salmon River	Challis, Idaho	—	do	—	4,023
Lawyers Creek, trib. of Clearwater River	Kamiah, Idaho	⁽¹⁾	do	—	4,091
Yakima River	W. Richland, Wash.	—	do	—	5,527
Zintel Canyon, trib. of Columbia River	Kennewick, Wash.	Dec. 3, 1956	do	—	4,417
Walla Walla River, Wash.	Lower Dry Creek	July 20, 1956	do	—	9,805
Waterman Gulch	Athena, Oreg.	July 3, 1956	do	—	354
Umatilla River, Zone 2	Pendleton, Oreg.	July 3, 1956	do	—	10,086
Beech Creek, trib. of John Day River	Mt. Vernon, Oreg.	Sept. 4, 1956	do	—	2,438
¹Work to be done under Sec. 208 of the 1954 Flood Control Act.

Emergency flood-control activities—Repair, flood fighting, and rescue work. (PL 99, 84th Cong., and antecedent legislation.)

Project	Location	Date authorized	Date of construction start	Date completed	Federal cost¹

Advance preparation	Walla Walla, Dist.	Continuing	—	—	$6,508
Boise River	Ballentine	Oct. 22, 1957	Dec. 1957	Jan. 1958	16,540
	State Prison Farm	Oct. 22, 1957	Dec. 1957	Dec. 1957	18,963
	Eagle Bridge	Oct. 22, 1957	⁽²⁾	—	415
	Mumford	Oct. 22, 1957	⁽²⁾	—	129
	Morden	Oct. 22, 1957	⁽²⁾	—	116
	Silver Bridge	Oct. 22, 1957	⁽²⁾	—	142
	Red Bridge	Oct. 22, 1957	⁽²⁾	—	171
Weiser River	Kirk	Oct. 22, 1957	Nov. 1957	Nov. 1957	6,353
	Unity Bridge	Oct. 22, 1957	Dec. 1957	Dec. 1957	1,397
	Phil Ford	Oct. 22, 1957	Nov. 1957	Nov. 1957	4,819
	Lyle-Thorsen-Smith	Oct. 22, 1957	Nov. 1957	Dec. 1957	11,765
Snake River, Heise-Roberts area	Bowen	Oct. 22, 1957	Feb. 1958	Feb. 1958	3,920
	Magelby	Oct. 22, 1957	Jan. 1958	Feb. 1958	6,228
	Koon	Mar. 8, 1957	May 1957	June. 1957	—4,113
	Blakely	Mar. 8, 1957	May 1957	June. 1957	367
	Clark	Mar. 8, 1957	May 1957	June. 1957	359
	Fulmer	Mar. 8, 1957	May 1957	June. 1957	2,087
Snake River, Jackson Hole Area	Taylor	Mar. 8, 1957	Apr. 1957	May 1957	—5,114
	Nelson	Mar. 8, 1957	Apr. 1957	May 1957	—3,305
	Hanson	Mar. 8, 1957	Apr. 1957	May 1957	—3,235
¹Actual cost ²Cancelled. Not constructed due to lack of local cooperation.

28. SCHEDULING OF FLOOD CONTROL OPERATIONS

Studies were continued toward the completion of a reservoir regulation manual including an operating agreement and flood-regulation parameters for the Palisades project of the Bureau of Reclamation. A draft copy of the manual was prepared for review and submitted to higher authority and has since been published in the Federal Register. The Palisades Reservoir and Jackson Lake were operated jointly in the interest of flood control and irrigation in accordance with the proposed operating agreement and flood control and irrigation in accordance with the proposed operating agreement and flood-control parameters.

Studies were initiated concerning the forecasting of seasonal flows of the Snake River at Oxbow, Oregon, in connection with the development of flood-control operational criteria and rule curves concerning the Brownlee project of the Idaho Power Co. A meeting was held with representatives of the company in March 1957 concerning this work.

The operation of existing reservoirs on the Payette River, Owyhee River, and other streams including McKay Creek was accomplished in coordination with the Bureau of Reclamation and associated irrigation interests. Although no specific operating agreements relative to flood control exist on these streams, some flood-control benefits were achieved by cooperative action.

Total costs during the fiscal year were $5,439.

29. EXAMINATIONS AND SURVEYS

Total cost of work during the fiscal year for flood control studies was $102,656.

Preliminary examination reports on Upper Snake River, Oreg., Idaho and Wyo; Esquatzel Coulee, Wash.; Mill Creek, Wash.; and Touchet River, Wash.

The anticipated allocation of $168,000 for fiscal year 1959 will be applied as follows: Continuation of the Upper Snake River survey, $100,000; Mill Creek, Wash., survey, $15,100; and Touchet, Wash., $18,500; and continuation of Grande Ronde River, Oreg., survey, $25,000.

30. RESEARCH AND DEVELOPMENT

Hydrologic Studies. Financial support was continued for the development of a heated orifice-type precipitation gage by the University of Idaho. This gage is being developed to prevent capping with snow and ice at unattended remotely located precipitation stations where this characteristic of snow and ice is a problem relative to the measurement of precipitation.

The Walla Walla District, together with the Sacramento District, entered into a contract with the Sierra Electronics Corp. of Menlo Park, Calif., for the development of transistorized battery operated radio equipment. This equipment may be used in a radioactive radio-telemetering snow-gage network to be located in the remote points of this district. Initially, this includes 3 data stations and 2 relay stations, and the central receiving station in the district office. This equipment will permit the transmission of current data concerning the water content of the snow pack. The extension of the network to include other watersheds, particularly the Salmon River and Snake River, is to be completed in the near future. Sierra Electronics Corp. indicates that the equipment can be modified successfully to permit the transmission of other data such as temperature, snow condition, and river stages. Preliminary studies were made of requirements for a comprehensive radio-telemarketing network. Also, investigations were made in hydrologic studies to improve relationships of snow-melt runoff and flood forecasting procedures. Total costs of hydrologic studies during fiscal year were $449.

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