1957 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, 1957

Department of the Army
Office of the Chief of Engineers
1957

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. (See U.S. Geological Survey maps of Oregon, Washington, and Idaho.)

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 1957 Base)

Ice Harbor lock and dam, river mile 9.7	$135,000,000
Lower Monumental lock and dam, river mile 44.7	133,000,000
Little Goose lock and dam, river mile 72.2	139,000,000
Lower Granite lock and dam, river mile 113.1	116,000,000
Open-river improvement, Lewiston to Johnson Bar Landing	34,613¹
Total	$523,034,613
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 are given in the report for that project, which comprised all of the new work during the fiscal year.

Total costs during the fiscal year were $10,130,947, 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 1957 Estimated Cost	Total new work allotments to June 30, 1957	Cost to June 30, 1957		Percent completed	Construction data
Project	Approved 1957 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	$12,782,173	$12,489,056	—	9	Construction begun in January 1956.
Lower Monumental lock and dam	133,000,000	180,000²	180,000²
Little Goose lock and dam	139,000,000	150,000²	140,000²
Lower Granite lock and dam	116,000,000	162,000²	135,000²
Survey for navigation aids	—	—	—	$3,394
Open River improvement—Lewiston to Johnson Bar landing	34,613³	34,613	34,613	27,983	—	Maintenance only
Total	523,034,613	13,308,786	12,978,669	31,377
¹See individual report. ²Prorata cost of site selection studies. ³No channel dimension specified.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953^{1 2}
	1953	1954	1955	1956	1957

New Work
Appropriated	$140,000	$50,000	—	$1,000,000	$10,737,000	$13,708,936
Cost	131,152	9,778	$40,565	1,286,041	10,130,947	13,378,819
Maintenance
Appropriated	—	—	3,000	—	—	217,947
Cost	433	—	3,364	30	—	217,947
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.
Other new work data:
Unobligated balance, June 30, 1957						$41,571
Appropriated for succeeding fiscal year ending June 30, 1958						17,800,000
Unobligated balances available for succeeding fiscal year ending June 30, 1958						17,841,571
Estimated additional amount needed to be appropriated for completion of existing project						492,005,827

2. 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 1955 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 grading and surfacing of both the south and north shore access roads to the project were completed. Construction of the first-step cofferdam, unloading spur track, temporary fish ladder, resident engineer's office building were completed during the year. A contract was awarded and construction is on schedule for the first major phase of the project within the first-step cofferdam; consisting of 7½ bays of the spillway dam, skeleton powerhouse structure, concrete gravity south abutment section, and the south shore fish ladder. Contracts were awarded and construction is under way for relocation of the Spokane, Portland and Seattle Railway past the dam site and the construction of a permanent water supply system for the project. Supply contracts were awarded for the powerhouse intake gantry crane, tailrace gantry crane, and the 500-ton powerhouse bridge crane. Land acquisition for the project site lands and rights-of-way were completed during the year and acquisition continued for reservoir lands and relocations. Engineering design studies for the first phase of construction were completed during the year and are well underway on the second and third construction phases of the project and utility relocations. Hydraulic model studies were carried on in conjunction with the design studies for the south shore first phase construction work.

Total costs during the fiscal year were $10,130,947 all for new work.

Condition at end of fiscal year. The first-step cofferdam, unloading spur track, temporary fish ladder, and resident engineer's office building are complete. The contract for the first phase of the work within the first-step cofferdam is 1`9 percent complete. Relocation of the Spokane, Portland and Seattle Railway at the dam site is 17 percent complete and the water supply system for the project is 65 percent complete.

Total costs have been $12,489,056, all for new work.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953
	1953	1954	1955	1956	1957

New Work
Appropriated	$140,000	$5,000	—	$1,000,000	$10,700,000	$12,782,173
Cost	131,152	9,778	$40,565	1,286,041	10,130,947	12,489,056;
Other new work data:
Unobligated balance, June 30, 1957						$4,571
Appropriated for succeeding fiscal year ending June 30, 1958						17,800,000
Unobligated balances available for succeeding fiscal year ending June 30, 1958						17,804,571
Estimated additional amount needed to be appropriated for completion of existing project						104,417,827

3. 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 proposed improvement provides principally for the improvement of navigation, creation of pool extending approximately 64 miles upstream to a point about 27 miles above Pasco, Wash. The dam, which will raise 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 1957, is $287,000,000. The average annual maintenance cost during the first 4 years was $979,241.

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 new fire station and security building. The installation of main generating units 13 and 14 was completed.

Maintenance: The project was operated throughout the fiscal year. Two additional power units were placed in commercial operation February 8, 1957.

Total costs during the fiscal year were $2,385,086 for new work and $1,258,620 for maintenance.

Condition at end of fiscal year. Construction of existing project which was started May 5, 1947, is now approximately 98 percent complete. The navigation lock, dam, fish facilities, powerhouse structure, levees, pumping plants, and relocations are complete. All fourteen power units are now complete.

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 $282,950,835 for new work and $3,916,963 for maintenance.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953
	1953	1954	1955	1956	1957

New Work
Appropriated	$62,604,000	$26,350,000	$24,000,000	$11,185,000	$4,500,100	$283,724,100¹
Cost	50,696,511	41,157,966	24,832,644	9,381,920	2,385,086	282,950,835¹
Maintenance
Appropriated	—	479,000	955,800	1,250,000	2,684,800	3,942,500
Cost	—	468,146	964,119	1,226,078	1,258,620	3,916,963
Other new work data:
Unobligated balance, June 30, 1957						$424,279
Unobligated balances available for succeeding fiscal year ending June 30, 1958						424,279
Estimated additional amount needed to be appropriated for completion of existing project						3,275,900

4. 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. The authorized 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 approved in 1956, is $350,000,000.

Operations and results during fiscal year. New work: Design Memorandum No. 1, "Hydrology," which was 95 percent complete at the end of fiscal year 1956, was completed. General design memorandum studies were continued following completion of Design Memorandum No. 2, "Site Selection Report, John Day Lock and Dam, Columbia River, Oreg. and Wash.," dated June 15, 1956. These studies included surveys, foundation drilling, construction of a hydraulic model, and office engineering studies. The general design memorandum was 70 percent complete at the end of the fiscal year.

Total costs during the fiscal year were $1,349,345, all for new work.

Condition at end of fiscal year. Construction has not been initiated. Planning prior to initiation of construction is 75 percent complete, based on authorization in accordance with the general plan contained in Senate Document 10, 85th Congress, 1st session.

Total costs have been $1,939,664, all for new work.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953
	1953	1954	1955	1956	1957

New Work
Appropriated	—	—	—	$550,000	$1,475,000	$2,025,000
Cost	—	—	—	590,319	1,349,345	1,939,664
Other new work data:
Unobligated balance, June 30, 1957						$55,371
Appropriated for succeeding fiscal year ending June 30, 1958						1,000,000
Unobligated balances available for succeeding fiscal year ending June 30, 1958						1,055,371
Estimated additional amount needed to be appropriated for completion of existing project						346,975,000

5. 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 $13,743.

The incompleted channel rectification work at Owyhee Rapids, 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.

The existing project was authorized by the following River and Harbor Acts:

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 156,000 gallons of aqua ammonia, with truck, rail, and water connections. There is a railroad located 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. Reconnaissance and condition surveys determining channel depths at Owyhee, Canoe Encampment, and Four O'clock Rapids were made. Also a reconnaissance survey with a fathometer was made for the entire reach from head of Celilo Canal to McNary lock and dam. The work was performed at a cost of $7,485.

Condition at end of fiscal year. The authorized 7-foot channel 150 feet wide has been completed to the foot of Umatilla Rapids. The controlling depth between Celilo Falls and the foot of Umatilla Rapids is 7 feet, survey of August 1954. For that portion of the project above McNary Dam, project depths and greater are available at all times.

The Arlington approach channel was completed in 1948.

Total costs have been $2,191,133 of which $1,356,584 (including $400,000 Emergency Relief Administration funds) was for new work and $834,549 for maintenance.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953
	1953	1954	1955	1956	1957

New Work
Appropriated	—	—	—	—	—	$1,851,195
Cost	—	—	—	—	—	1,851,195
Maintenance
Appropriated	$4,000	$2,600	$53.500	$1,250	$8,000	936,013
Cost	3,621	2,693	53,714	1,203	7,485	935,379
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.

6. 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

Columbia River and Tributaries above Celilo Falls to Kennewick, Wash.	$7,485	April and May 1957
Total cost during fiscal year	7,485

7. OTHER AUTHORIZED NAVIGATION PROJECTS

Name of project	For last full Report see Annual Report for—	Cost and expenditures to June 30, 1957		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.

8. 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, 1957
Project	Federal Cost	Appropriated	Cost

Grande Ronde Valley, Oreg.¹	$7,680,000	$102,500	$102,458
Portneuf River and Marsh Creek, Idaho¹	1,260,000	539,000	73,276
Umatilla River, Oreg.	489,000
Touchet River, Wash.	580,000	11,000	5,975
Heise-Roberts Extension, Idaho	5,540,000	10,000	2,422
Boise Valley, Idaho	604,000	10,000	4,002
Lower Walla Walla River, Wash. (not justified)		4,000	4,000
Blackfoot Area, Snake River, Idaho⊃	49,400	43,093	2,093
Blackfoot River, Idaho	530,000	10,000	9,179
Shelley Area, Idaho	29,200	1,573	1,573
Little Wood River, Idaho	219,000	6,000	5,632
Kendrick, Potlatch River, Idaho¹	71,600	7,931	7,797
Mill Creek, Wash. (not justified)		3,537	3,537
Payette Valley, Idaho	1,300,000	25,000	802
Teton River, Idaho (not justified)		10,387	10,387
Malheur River, Oreg.¹	508,000	11,000	10,672
South fork, Clearwater River, Idaho²		3,899	3,899
Palouse River, Wash.	605,000
Mud Lake Area, Idaho	796,000	6,000	5,228
Weiser River, Idaho¹	2,840,000	11,148	11,148
Whitebird Creek, Idaho²		1,896	1,896
Camas Creek, Idaho	808,000	16,000	1,056
John Day River Area, Oreg.	632,000
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. 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 in Idaho: Blackfoot Area, Shelley Area, South Fork Clearwater River, and Whitebird Creek. Justification reports were initiated for the following locations also in Idaho: Blackfoot River, Boise Valley, camas Creek, Heise-Roberts Extension, Little Wood River, and Mud Lake Area. General design memoranda were completed for two locations"Grande Ronde Valley, Oreg.; and Kendrick, Potlatch River, Idaho. Plans and specifications were continued for the Pocatello unit of Portneuf River and Marsh Creek, Idaho, location. Total costs for the fiscal year were $61,947.

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

Justification reports recommend construction of flood protective works at the following locations: Blackfoot Area, Idaho; Kendrick, Potlatch River, Idaho; Shelley Area, Idaho; Weiser River, Idaho; Malheur River, Oreg.; and Umatilla River, Oreg.

Completion percentages for justification reports in progress are: Blackfoot River, Idaho 92 percent; Boise Valley, Idaho 40 percent; Camas Creek, Idaho 6 percent; Heise-Roberts Extension, Idaho 35 percent; Little Wood River, Idaho 93 percent; Mud Lake Area, Idaho 86 percent; Payette Valley, Idaho 91 percent; Touchet River, Wash. 55 percent. Upstream storage investigations report on Grande Ronde Valley, Oreg. location, is complete and recommends construction of channel improvements in the valley which can be coordinated with upstream storage at a later date. General design memoranda for Grande Ronde Valley and Kendrick, Potlatch River, Idaho, are complete. Plans and specifications for the Pocatello unit of Portneuf River and Marsh Creek, Idaho location, are 87 percent complete. Total costs have been $267,032.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953
	1953	1954	1955	1956	1957

New Work
Appropriated	—	$23,000	$2,200	—$276	$94,368	$119,292
Cost	—	13,271	4,714	4,164	37,440	59,589
Other new work data:
Unobligated balance, June 30, 1957						$59,670
¹Excludes Portneuf River and Marsh Creek, Idaho, Weiser River, Idaho; Grande Ronde Valley, Oregon, and Kendrick, Potlatch River, Idaho, reported in detail in individual report. Does not include amounts appropriated for improvements in Portland district as follows:
Prineville, Crooked River, Oreg.						$4,000
Randle, Cowlitz River, Wash.						5,500
Total						$9,500

9. 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 1957 is $2,360,000 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.

Teton County, the sponsoring agency, has been unable to show financial ability to operate and maintain the project. An attempt is now in progress for the State of Wyoming to underwrite the project's operation and maintenance for Teton County.

Operations and results during fiscal year. Supplemental general design studies regarding more extensive protection were completed. Preparation of plans and specifications began and continued throughout the fiscal year. Total costs during the fiscal year were $31,532.

Condition at end of fiscal year. Plans and specifications for first unit of work on right bank upstream from Jackson-Wilson Bridge were continued and are 85 percent complete. Surveys for the left bank were completed. No construction work has been done. Total costs have been $126,877.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953
	1953	1954	1955	1956	1957

New Work
Appropriated	—	—	$53,000	$45,000	$400,000	$498,000
Cost	—	—	52,386	42,959	31,532	126,877
Other new work data:
Unobligated balance, June 30, 1957						$371,122
Unobligated balances available for succeeding fiscal year ending June 30, 1958						371,122
Estimated additional amount needed to be appropriated for completion of existing project						1,862,000

10. 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 estimated cost revised in 1957 is $49,400 for construction. Right-of-way 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 establishing economic justification for the project was completed. Total costs during the fiscal year were $2,093.

Condition at end of fiscal year. No construction has been done. Total costs have been $2,093.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953
	1953	1954	1955	1956	1957

New Work
Appropriated	—	—	—	—	$43,093	$43,093
Cost	—	—	—	—	2,093	3,093
Other new work data:
Unobligated balance, June 30, 1957						$41,000
Unobligated balances available for succeeding fiscal year ending June 30, 1958						41,000
Estimated additional amount needed to be appropriated for completion of existing project						6,307

11. 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 of the Portneuf River, and channel improvement along the entire length 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 revised in 1957 is $1,260,000 for construction.

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 for the Pocatello unit were discontinued upon submission to higher authority for review. Funds for construction have been reported for revocation due to the lack of local cooperation. Total costs during the fiscal year were $193.

Condition at end of fiscal year. No construction work has been done. Plans and specifications for the Pocatello unit of the project are 88 percent complete. No work is anticipated until local interests comply with the requirements for local cooperation. Total costs have been $73,276.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953
	1953	1954	1955	1956	1957

New Work
Appropriated	—	$20,000	$19,000	$500,000	—	$539,000
Cost	—	17,766	14,021	41,296	$193	73,276
Other new work data:
Unobligated balance, June 30, 1957						$465,724
Unobligated balance available for succeeding fiscal year ending June 30, 1958						465,724
Estimated additional amount needed to be appropriated for completion of existing project						721,000

12. 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 (1957) approved estimated project cost is $20,600,000. The average annual maintenance cost during the first 3 years was $43,121.

Local Cooperation. Section 2 of the Flood Control Act approved June 28, 1938, applies.

Operations and results during fiscal year. New Work: Plans and specifications were completed for the parking areas and boat launching ramps at Mores Creek and Spring Shores locations.

Maintenance: Normal operation and maintenance of the project continued.

Total costs during the fiscal year were $148,461 for new work and $64,841 for maintenance.

Condition at end of fiscal year. Construction of the existing project, which was initiated in November 1949, is 97 percent complete. Relocated Highway 21 is open to traffic, with surfacing deferred pending stabilization of the road bed. Robie Creek Road is complete. Arrowrock Road is complete except for a small amount of realignment, stabilization of rock cuts, and replacement of a few embankments. Work undertaken by the Bureau of Reclamation on Arrowrock Dam is complete.

Total costs have been $18,177,971 for new work and $129,368 for maintenance.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953
	1953	1954	1955	1956	1957

New Work
Appropriated	$4,975,000	$1,500,000	$1,750,000	$500,000	—	$18,705,000
Cost	4,482,800	3,670,796	1,621,116	372,809	$148,461	18,177,971
Maintenance
Appropriated			9,760	56,000	65,000	130,760
Cost			9,668	54,858	64,841	129,368
Other new work data:
Unobligated balance, June 30, 1957						$488,011
Unobligated balance available for succeeding fiscal year ending June 30, 1958						488,011
Estimated additional amount needed to be appropriated for completion of existing project						1,895,000

13. 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 1957 is $508,000. 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. The economic justification report was submitted July 18, 1956 and approved April 19, 1957. Total costs during the fiscal year were $413.

Condition at end of fiscal year. No construction has been done. Total costs have been $10,672 (table on page 1789).

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953
	1953	1954	1955	1956	1957

New Work
Appropriated	—	—	$5,000	$6,000	—	$11,000
Cost	—	—	185	10,074	$413	10,672
Other new work data:
Unobligated balance, fiscal year ending June 30, 1957						$328
Unobligated balances available for succeeding fiscal year ending June 30, 1958						328
Estimated additional amount needed to be appropriated for completion of existing project						497,000

14. MALHEUR IMPROVEMENT DISTRICT, SNAKE RIVER, OREG.

Location. This project is located on the left bank of the Snake River in Malheur County, Oregon, 1½ miles above Weiser, Idaho.

Existing Project. This provides for protection of riverbank in the Malheur improvement district along the sharp bend of the Oregon side of the river about 1½ miles above Weiser, Idaho. The latest cost estimate, revised in 1957 for new work is $55,900 for construction. The cost of lands and damages is to be paid by local interests.

The existing project was authorized by Flood Control Act approved December 22, 1944 (H. Doc. 452, 77th Cong., 1st sess.).

Local Cooperation. Assurances of local cooperation have been furnished and were approved in September 1956.

Operations and results during fiscal year. Work was completed by contract during the year. Total costs for the fiscal year, all for new work, were $55,575.

Condition at end of fiscal year. Construction of the riverbank protection has been completed and withstood the 1957 high water which was third highest of record.

Total costs have been $55,894.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953
	1953	1954	1955	1956	1957

New Work
Appropriated	—	—	—	—	$55,575	$55,894
Cost	—	—	—	—	55,575	55,894

15. 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 1957, is $2,840,000. 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. The economic justification was approved on September 13, 1956. Total costs during the fiscal year were $127.

Condition at end of fiscal year. No construction has been done. Total costs have been $11,148.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953
	1953	1954	1955	1956	1957

New Work
Appropriated	—	$7,000	$9,000	—$4,000	—$852	$11,148
Cost	—	5.349	2,212	3,461	127	11,148
Other new work data:
Unobligated balance, fiscal year ending June 30, 1957						$70,000
Unobligated balances available for succeeding fiscal year ending June 30, 1958						70,000
Estimated additional amount needed to be appropriated for completion of existing project						2,758,852

16. 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 has recently been established. The estimated cost revised in 1957 is $7,680,000 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 revision.

Operations and results during fiscal year. The general design memorandum was completed. Total costs during the fiscal year were $17,815.

Condition at end of fiscal year. Upstream storage investigations and general design memorandum are complete. No construction has been done. Total costs have been $102,458.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953
	1953	1954	1955	1956	1957

New Work
Appropriated	—	$10,000	$30,000	$45,000	$17,500	$102,500
Cost	—	967	32,328	51,348	17,815	102,458
Other new work data:
Unobligated balance, fiscal year ending June 30, 1957						$42
Unobligated balances available for succeeding fiscal year ending June 30, 1958						42
Estimated additional amount needed to be appropriated for completion of existing project						7,577,500

17. 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 1956 is $71,600. 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. The general design memorandum was completed and submitted. Total costs for the fiscal year were $3,866.

Condition at end of fiscal year. No construction has been done. Total costs have been $7,797.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953
	1953	1954	1955	1956	1957

New Work
Appropriated	—	—	$4,000	—$69	$4,000	$7,931
Cost	—	—	2,313	1,618	3,866	7,797
Other new work data:
Unobligated balance, fiscal year ending June 30, 1957						$134
Unobligated balances available for succeeding fiscal year ending June 30, 1958						134
Estimated additional amount needed to be appropriated for completion of existing project						63,669

18. 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, and revetments. The estimated cost revised in 1957, is $2,880,000 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, railroad, 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 $14,184.

Condition at end of fiscal year. Specific design memorandum is 4 percent complete. No construction work has been done. Total costs have been $114,181.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953
	1953	1954	1955	1956	1957

New Work
Appropriated	—	—	$7,000	$40,000	—	$120,851
Cost	—	—	7,319	18,827	$14,184	114,181
Other new work data:
Unobligated balance, fiscal year ending June 30, 1957						$4,990
Appropriated for succeeding fiscal year ending June 30, 1958						136,000
Unobligated balances available for succeeding fiscal year ending June 30, 1958						140,990
Estimated additional amount needed to be appropriated for completion of existing project						2,623,149

19. 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, Seventy-sixth Congress, third session. The cost of the completed project was $2,162,155.

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 diversions for bed sealing. Construction of channel stabilizers and a gaging station were completed. Total costs for the fiscal year were $149,778, 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. 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 $583,715 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, 1957, including fiscal years prior to 1953¹
	1953	1954	1955	1956	1957

New Work
Appropriated	—	—	—	—	—	$2,162,155
Cost	—	—	—	—	—	2,162,155
Maintenance
Appropriated	$17,200	$13,500	$15,180	$134,750	$34,450	583,980
Cost	17,290	17,459	16,583	19,630	149,778	583,715
¹In addition, $80,000 for new work was expended from contributed funds.

20. 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 1957, is $475,000 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. General design memorandum was continued. Total costs during the fiscal year were $9,187.

Condition at end of fiscal year. General design memorandum was completed. Plans and specifications were begun and continued throughout the fiscal year. Total costs have been $45,578.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953
	1953	1954	1955	1956	1957

New Work
Appropriated	—	—	$15,000	$5,700	$25,000	$45,700
Cost	—	—	10,000	9,187	25,482	45,578
Other new work data:
Unobligated balance, fiscal year ending June 30, 1957						$122
Appropriated for succeeding fiscal year ending June 30, 1958						400,000
Unobligated balances available for succeeding fiscal year ending June 30, 1958						400,122
Estimated additional amount needed to be appropriated for completion of existing project						29,300

21. 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 1957 is $489,000. 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. There were no activities during the fiscal year.

Condition at end of fiscal year. Economic justification was established in connection with a survey report on the Umatilla River.

22. OTHER AUTHORIZED FLOOD CONTROL PROJECTS

Name of project	For last full Report see Annual Report for—	Cost and expenditures to June 30, 1957		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

Pullman, Palouse River, Washington	1953	$49,267	—	1,740,733¹
Pendleton, Umatilla River, Oreg.	1939	143,263	—	(2)
Dayton, Touchet River, Washington	1953	16,064	—	653,936¹
Milton-Freewater, Walla Walla River, Oreg.	1956	886,956	—	¹
Pilot Rock, Birch Creek, Oreg.	1949	3,700	—	$287,300¹
Lewiston-Clarkston Levees	1950	—	—	4,590,000^1,3
Arlington, Alkali Canyon, Oreg.	1950	20,112	—	492,688⁴
Heise-Roberts Area, Snake River, Idaho	1955	1,575,838	—	⁽²⁾
(1) Inactive. Last cost estimate revised 1957. (2) Completed. (3) No funds appropriated for work. (4) Inactive. Last cost estimate revised 1954.

23. 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 the regulations.

Operations and results during fiscal year. Inspections made 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	6	Touchet	2
Gros Ventre	2	Umatilla	1
Little Salmon	1	Walla Walla	2
Little Wood	1	Weiser	8
Owyhee	1	Yakima	1
Payette	15

Total costs during the fiscal year were $3,032.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953
	1953	1954	1955	1956	1957

New Work
Appropriated	$1,000	—	$300	$3,000	$3,000	$8,800
Cost	652	$324	999	3,040	3,032	8,800

24. 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 cost¹

Weiser River	Council location, Idaho	Jul. 20, 1956	Aug. 20, 1956	Nov. 21, 1956	$12,325
Little Salmon River	Idaho	Dec. 3, 1956	Feb. 1, 1957	Apr. 23, 1957	8,993
Touchet River	Near Waitsburg, Wash.				273
¹Actual cost FY 1957

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

In addition to funds previously allotted amounting to $264,184, funds in the amount of $370,039 were allotted during fiscal year 1956, making a total of $644,808, all for new work.

Repair of the Tomanovich-Salmon City Location, Salmon River, Idaho was completed during the fiscal year at a cost of $29,249.

Design, plans and specifications were initiated for Lower Dry Creek, tributary of the Walla Walla River, Wash.; Umatilla River, Zone 2 in the vicinity of Pendleton, Oreg., and Waterman's Gulch at Athena, Oreg. Local interests at each of these locations are endeavoring to fulfill the requirements of local cooperation. No construction work has been started at these locations.

Project reports were completed for Mount Vernon Location, John Day River, Oreg.; Dump Creek Location, Salmon River, Idaho; and Big Wood River, vicinity of Hailey, Idaho. Project reports were initiated for Lawyer's Creek, vicinity of Kamiah, Idaho, and Zintel Canyon at Kennewick, Wash.

Total costs during the fiscal year were $93,333. Total costs to June 30, 1957, have been $368,102, all for new work.

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

In addition to funds previously allotted in the amount of $3,067,354, funds in the amount of $218,125 were allotted during the fiscal year, making a total of $3,285,479, all for maintenance.

Flood emergency operations were performed at Orofino, Clearwater River, Idaho during the fiscal year. Repair and restoration activities were performed at 10 locations in Idaho and three locations in Wyoming. In addition,$6,557 contributed funds were expended for repair and restoration work.

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

Idaho
Boise River	Takatori	Nov. 23, 1956	Jan. 7, 1957	Mar. 1, 1957	$13,439
	Yeakel	do	do	do	16,718
	Cromwell	do	do	do	7,411
Snake River, Heise-Roberts Area	Blakely	Mar. 8, 1957	May 16, 1957	June 24, 1957	4,202
	Koon	do	do	do	6,259
	Clark	do	do	do	9,223
	Fulmer	do	do	do	28,658
Snake River	Blackfoot	Nov. 20,1956	Feb. 27, 1957	Apr. 12, 1957	11,996
Snake River	Ferry Butte Road	do	Apr. 11, 1957	Apr. 27, 1957	11,996
Clearwater River	Lapwai Creek	Feb. 19, 1957	May 5, 1957	June 11, 1957	10,494
Wyoming
Snake River, Jackson hole Area	Takatori	Mar. 8, 1957	Apr. 8, 1957	Ma7 31, 1957	27,779
	Nelson	do	do	do	17,041
	Hanson	do	do	do	16,245
¹Actual cost

Total costs from Federal funds during the fiscal year have been $201,634. Total costs to June 30, 1957, have been $3,252,000.

25. SCHEDULING OF FLOOD CONTROL OPERATIONS

In accordance with section 7 of the Flood Control Act, approved December 22, 1944, studies were continued for preparation of a manual on the plan of operation for flood regulation of Palisades Reservoir on the upper Snake River now under construction by Bureau of Reclamation. A preliminary draft of the regulations for inclusion in part 208 of the Federal Register was submitted to Office of the chief of Engineers. The draft was returned with comments. Studies are continuing toward completion of the regulations and the manual.

Operation of existing reservoirs on Payette River and upper Snake River were coordinated with the Bureau of Reclamation and irrigation interests to effect maximum practicable reduction of the spring runoff.

Total costs during the fiscal year were $4,501.

Cost and Financial Summary
	Fiscal year ending June 30—					Total to June 30, 1957, including fiscal years prior to 1953
	1953	1954	1955	1956	1957

New Work
Appropriated	—	$1,000	$2,000	$4,700	$4,500	$12,200
Cost	—	54	2,800	4,679	4,501	12,114

26. EXAMINATIONS AND SURVEYS

Total costs of work during the fiscal year for flood control studies were $88,163.

Preliminary examination reports on Yakima River near Richland, Wash., and Zintel Canyon at Kennewick, Wash., were completed. Work on the Upper Snake River Survey report was continued; and survey reports on Esquatzel Coulee and Mill Creek, Wash., were initiated.

The anticipated allocation of $137,600 for fiscal year 1958 will be applied as follows: Continuation of the Upper Snake River Survey, $100,000; Esquatzel Coulee, Washington Survey, $15,000; Mill Creek, tributary of Walla Walla River, Washington Survey, $12,600; and resumption of Touchet River and tributaries, Washington Survey, $10,000.

27. RESEARCH AND DEVELOPMENT

Hydrologic Studies. Under this category partial support was given to the development by University of Idaho of a heated orifice precipitation gage which should operate unattended in remote areas. Miscellaneous studies were conducted pertaining to snowmelt runoff relations. Total costs of hydrologic studies during the fiscal year were $2,114.

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