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

Extract From the Annual Report of the
Chief of Engineers, 1956

Department of the Army
Office of the Chief of Engineers
1956

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.
2.
3.
4.
5.
6.		 Snake River, Oregon, Washington, and Idaho
Ice Harbor Lock and Dam, Snake River, Wash.
McNary Lock and Dam, Columbia River, Oreg.
John Day Lock and Dam, Columbia River, Wash. and Oreg.
Columbia River and tributaries above Celilo Falls to Kennewick, Wash.
Other authorized navigation projects
Flood Control
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.		 Columbia River Basin, Local Flood Protection Projects
Jackson Hole, Snake River, Idaho
Portneuf River and Marsh Creek, Columbia River Basin, Idaho
Lucky Peak Reservoir, Boise River, Idaho
Grande Ronde Valley, Columbia River Basin, Oregon
Colfax, Palouse River, Wash.
Milton-Freewater, Walla Walla River, Oregon
Mill Creek, Washington
Pendleton, Umatilla River, Oreg.
Other authorized flood-control projects
Inspection of completed flood control works
Flood control work under special authorization
Scheduling of flood control operations
General investigations
20.
21.		 Examinations and surveys
Collection and study of basic data

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 1956 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. The progress of preliminary work and status of operations 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 $1,286,041 for new work and $30 for maintenance.

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

Project Approved
1956
Estimated
Cost		 Total new
work
allotments
to 6-30-1956		 Cost to June 30, 1956 Percent
completed		 Construction data
New work Maintenance
Ice Harbor lock and dam¹ $135,000,000 $2,082,173 $2,358,100³ — 2 Construction started in January 1956.
Lower Monumental lock and dam 133,000,000 180,000² 180,000² — 0  
Little Goose lock and dam 139,000,000 140,000² 140,000² — 0  
Lower Granite lock and dam 116,000,000 135,000² 135,000² — 0  
Survey for navigation aids — — — 3,394 —  
Open River improvement—Lewiston to Johnson Bar landing 34,6134 34,613 34,613 27,983 — Maintenance only
Total 523,034,613 2,571,786 2,847,722 31,377 —  
1See individual report.
2Prorata cost of site selection studies.
3Includes advance of $300,000 in fiscal year 1956.
4No channel dimension specified.

Cost and Financial Summary
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 19521 2
1952 1953 1954 1955 1956
New Work
Appropriated
 —$240,438 $140,000 $50,000 — $1,000,000 $2,971,936
Cost
 93 131,152 9,778 $40,565 1,286,041 3,247,872
Maintenance
Appropriated
 —5,000 — — 3,000 — 217,947¹
Cost
 235 433 — 3,364 30 217,947
1Includes $400,150 for new work and $180,570 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, fiscal year ending June 30, 1956
 —$299,971
Appropriated for succeeding fiscal year ending June 30, 1957
 8,000,000
Unobligated balances available for succeeding fiscal year ending June 30, 1957
 7,700,029
Estimated additional amount needed to be appropriated for completion of existing project
 512,462,827

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: Supplement to Design Memorandum No. 1, General Plan and Detailed Cost Estimate was submitted August 5, 1955. Construction was initiated in January 1956. Grading of the south shore access road and project office road and public-parking area were completed. Construction of the first-step cofferdam, spur track unloading area grading and north shore access road were initiated during the year. Contracts were awarded for the manufacture and delivery of three, 143,000 HP turbines, the purchase of steel sheetpiling for the first-step cofferdam, and track laying for the railroad unloading spur. Land acquisition for project site lands and right-of-way were initiated during the year. Engineering design studies and hydraulic model studies are underway for the first-step construction within the south shore cofferdam, which includes 7½ bays of spillway, skeleton powerhouse, south shore fish facilities, left abutment, and permanent access railroad.

Total costs during the fiscal year were $1,286,041 all for new work.

Condition at end of fiscal year. Construction of the first-step cofferdam, north shore access road and grading unloading spur is 17 percent complete. Plans and specifications are nearing completion for the south shore construction with the first-step cofferdam.

Total costs have been $2,358,109, all for new work.

Cost and Financial Summary
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 1952
1952 1953 1954 1955 1956
New Work
Appropriated
 —$240,438 $140,000 $5,000 — $1,000,000 $2,082,173
Cost
 93 131,152 9,778 $40,565 1,286,041 2,358,109¹
1Includes $300,000 advanced in fiscal year 1956.

Other new work data:
Unobligated balance, June 30, 1956 —$299,971
Appropriated for fiscal year ending June 30, 1957 8,000,000
Unobligated balances available for succeeding fiscal year ending June 30, 1957 7,700,029
Estimated additional amount needed to be appropriated for completion of existing project 124,917,827

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 1956, is $285,000,000.

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: Placing concrete in entire structure is complete.

Installation of operating equipment for the navigation lock, dam, fish passage facilities and pumping plants is complete. Work is in progress for the installation of main generating units 13 and 14.

Maintenance: The project was operated throughout the fiscal year. Four additional power units were placed in commercial operation on the following dates: August 14, 1955; October 28, 1955; April 8, 1956; and April 22, 1956.

Total costs during the fiscal year were $9,381,920 for new work and $1,226,078 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. Twelve of the fourteen power units are 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. Twelve power units were in commercial operation at the end of the fiscal year.

Total costs have been $280,565,749 for new work and $2,658,343 for maintenance.

Cost and Financial Summary
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 1952
1952 1953 1954 1955 1956
New Work
Appropriated
 $42,900,000 $62,604,000 $26,350,000 $24,000,000 $11,185,000¹ $279,224,000
Cost
 55,813,617 50,696,511 41,157,966 24,832,644 9,381,9201,2 280,585,749
Maintenance
Appropriated
 — — 479,000 955,800 1,250,000 2,684,800
Cost
 — — 468,146 964,119 1,226,078² 2,658,343

Other new work data:
Unobligated balance, June 30, 1956 —$1,637,768
Appropriated for fiscal year ending June 30, 1957 4,500,100
Unobligated balances available for succeeding fiscal year ending June 30, 1957 2,862,332
Estimated additional amount needed to be appropriated for completion of existing project 1,275,900

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 and 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 is scheduled for early submission to the Congress.

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. In view of this situation, and contingent upon approval of the Congress, the Review Report plan is herein considered to represent the existing 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. Pursuant thereto, the existing project is considered to have normal pool at about elevation 262, with approximately 500,000 acre-feet of flood-control storage space available between pool elevations 252 and 265. The single lift navigation lock, 86 feet wide by 675 feet long in clear dimensions, will have a normal lift of 102 feet. The spillway will be 1,390 feet long, with 23 gates designed to pass a design flood of 2,250,000 cubic feet per second at maximum pool elevation 276 above mean sea level. Initial power installation will be 12 units at 100,000 kw. each for a total of 1,200,000 kw. with skeleton structures provided for 8 additional units to permit an ultimate installation of 2,000,000 kw. Fishladders and other facilities as necessary will be provided for passage of anadromous fish.

The estimated cost of the project in accordance with the above referenced Site Selection Report, and based on July 1956 price levels, is $350,000,000.

Operations and results during fiscal year. New work: The authorized project, as presented in House Document 531, 81st Congress, 2d Session, located John Day Dam at a site which was, at a later date, discovered to have unsuitable foundation conditions. The same House Document recommended that further studies be undertaken to determine a more suitable location. Such studies were completed during the fiscal year and results thereof, recommending location of the dam two-miles downstream of the site previously considered were submitted in Design Memorandum No. 2, "Site Selection Report, John Day Lock and Dam, Columbia River, Oregon and Washington," dated June 15, 1956. In addition, studies in connection with Design Memorandum No. 1, "Hydrology," are 95 percent complete, and preparation of Design Memorandum No. 3, "General Design Memorandum," is 19 percent complete at the end of the fiscal year.

Total costs during the fiscal year were $590,319, all for new work.

Condition at end of fiscal year. Construction has not been initiated. Planning prior to initiation of construction is 29 percent complete, based on the assumption that present project authorization will be revised in accordance with recommendations in the 1955 Review Report, on which Congressional action has not yet been taken, and on which detailed planning studies have been predicated.

Total costs have been $590,319, all for new work.

Cost and Financial Summary
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 1952
1952 1953 1954 1955 1956
New Work
Appropriated
 — — — — $550,000 $550,000
Cost
 — — — — 590,319 590,319¹

Other new work data:
Unobligated balance, June 30, 1956 —$44,153
Appropriated for fiscal year ending June 30, 1957 1,450,000
Unobligated balances available for succeeding fiscal year ending June 30, 1957 1,405,847
Estimated additional amount needed to be appropriated for completion of existing project 348,000,000

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 latest 1954 approved estimate for annual cost of maintenance is $120,000.

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.
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 stolrage 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 in the vicinity of Boardman, Oreg. were made at a cost of $1,203.

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 $2,183,648 of which $1,356,584 (including $400,000 Emergency Relief Administration funds) was for new work and $827,064 for maintenance.

Cost and Financial Summary
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 1952
1952 1953 1954 1955 1956
New Work
Appropriated
 — — — — — $1,851,195
Cost
 — — — — — 1,851,195
Maintenance
Appropriated
 $9,840 $4,000 $2,600 $53,500 $1,250 928,013
Cost
 9,840 3,621 2,693 53,714 1,203 927,894
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. OTHER AUTHORIZED NAVIGATION PROJECTS

Name of project For last full Report see Annual Report for— Cost and expenditures to June 30, 1956 Estimated amount required to Complete
Construction Operation
and
Maintenance
Umatilla Harbor 1952 — — $654,000¹
1No funds appropriated for work. Inactive.

7. 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, 1956
Appropriated Cost
Grande Ronde Valley, Oreg.¹ $5,240,000 $85,000 $84,643
Portneuf River and Marsh Creek, Idaho¹ 1,210,000 539,000 73,083
Umatilla River, Oreg. 472,000    
Touchet River, Wash. 560,000 7,000 4,225
Heise-Roberts Extension, Idaho 5,250,000    
Boise Valley, Idaho 583,000    
Lower Walla Walla River, Wash. (not justified)   4,000 4,000
Blackfoot Area, Snake River, Idaho 84,000    
Blackfoot River, Idaho 512,000    
Shelley Area, Idaho 59,000    
Little Wood River, Idaho 211,000    
Kendrick, Potlatch River, Idaho 65,000 3,931 3,931
Mill Creek, Wash. (not justified)   3,537 3,537
Payette Valley, Idaho 1,260,000    
Teton River, Idaho (not justified)   10,387 10,387
Malheur River, Oreg. 490,000 11,000 10,259
South fork, Clearwater River, Idaho 116,000    
Palouse River, Wash. 584,000    
Mud Lake Area, Idaho 768,000    
Weiser River, Idaho 2,740,000 12,000 11,021
Whitebird Creek, Idaho 73,000    
Camas Creek, Idaho 780,000    
John Day River Area, Oreg. 610,000    
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.
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 Weiser River, Marsh Creek unit of Portneuf River and Marsh Creek, and Kendrick, Potlatch River, Idaho locations; lower Walla Walla River, Washington location; and Umatilla River, Oregon location. Justification reports were continued for Grande Ronde River and Malheur River, Oregon locations; and Touchet River, Washington location. Design memorandum on upstream storage investigations, Grande Ronde Valley, Oregon location, was completed and preparation of a general design memorandum was continued. Plans and specifications were continued for the Pocatello unit of Portneuf River and Marsh Creek, Idaho location. Total costs for the fiscal year were $111,961.

Condition at end of fiscal year. Justification reports for Teton River, Idaho location; and Mill Creek and Lower Walla Walla River, Washington locations are complete. Local flood protection at these locations is not economically justified. Justification reports for Kendrick, Potlatch River, Marsh Creek unit of Portneuf River and Marsh Creek, and Weiser River, Idaho locations; and Umatilla River, Oregon location, recommend construction of flood protective works. Justification reports for Touchet River, Washington location, is 30 percent complete; for Malheur River, Oregon location, 98 percent complete. 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.

The general design memorandum for Grande Ronde Valley is 85 percent complete. Plans and specifications for the Pocatello unit of Portneuf River and Marsh Creek, Idaho location, are 87 percent complete. Total costs have been $205,086.

Cost and Financial Summary
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 1952
1952 1953 1954 1955 1956
New Work
Appropriated
 — — $30,000 $20,000 $1,655 $51,855
Cost
 — — 18,619 9,424; 19,317 47,360
Other new work data:
Unobligated balance, June 30, 1956
 $4,495
Appropriated for succeeding fiscal year ending June 30, 1957
 102,000
Unobligated balances available for succeeding fiscal year ending June 30, 1957
 106,495
Excludes Portneuf River and Marsh Creek, Idaho, and Grande Ronde Valley, Oreg., reported in detail in individual report.
1Does 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

8. 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 1956 is $2,280,000 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.

Operations and results during fiscal year. General design memorandum was completed and supplemental design studies regarding greater extent of protection were continued. Total costs during the fiscal year were $42,959.

Condition at end of fiscal year. Supplemental data for general design memorandum is 95 percent complete. Plans and specifications for first unit of work on right bank upstream from Jackson-Wilson Bridge were initiated. No construction work has been done. Total costs have been $95,345.

Cost and Financial Summary
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 1952
1952 1953 1954 1955 1956
New Work
Appropriated
 — — — $53,000 $45,000 $98,000
Cost
 — — — 52,386 42,959 95,345
Other new work data:
Unobligated balance, June 30, 1956
 $2,423
Appropriated for succeeding fiscal year ending June 30, 1957
 400,000
Unobligated balances available for succeeding fiscal year ending June 30, 1957
 402,423
Estimated additional amount needed to be appropriated for completion of existing project
 1,782,000

9. 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 1956 is $1,210,000 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 continued during the fiscal year. Funds for construction were allotted during the fiscal year, but work was not initiated due to lack of compliance with the requirements for local cooperation. Total costs during the fiscal year were $41,296.

Condition at end of fiscal year. No construction work has been done. Plans and specifications for the Pocatello unit of the project are 87 percent complete.

Cost and Financial Summary
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 1952
1952 1953 1954 1955 1956
New Work
Appropriated
 — — $20,000 $19,000 $500,000 $539,000
Cost
 — — 17,766 14,021 41,296 73,083
Other new work data:
Unobligated balance, June 30, 1956
 $465,917
Unobligated balance available for succeeding fiscal year ending June 30, 1957
 415,917
Estimated additional amount needed to be appropriated for completion of existing project
 671,000

10. 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 spillway will be located on the left abutment and will be designed to pass 123,000 cubic feet per second at maximum pool. Its discharge will be controlled by automatically operated tainter gates. The outlet works are to be located on the left abutment and consists of a tunnel controlled by Howell-Bunger 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 (1955) approved estimated project cost is $19,900,000.

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

Operations and results during fiscal year. New Work: An operations building and security fencing were constructed. Steel liners were installed in the concrete flip buckets at the outlet works. Pressure relief valves were installed in the outlet tunnel.

Maintenance: Normal operation and maintenance of the project continued.

Total costs during the fiscal year were $372,809 for new work and $54,858 for maintenance.

Condition at end of fiscal year. Construction of the existing project, which was initiated in November 1949, is 91 percent complete. The spillway is complete and the dam is essentially 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 realinement, stabilization of rock cuts, and replacement of a few embankments. Work being accomplished by the Bureau of Reclamation on Arrowrock Dam is complete.

Total costs have been $18,029,510 for new work and $64,526 for maintenance.

Cost and Financial Summary
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 1952
1952 1953 1954 1955 1956
New Work
Appropriated
 $3,800,000 $4,975,000 $1,500,000 $1,750,000 $500,000 $18,705,000
Cost
 2,784,969 4,482,800 3,670,796 1,621,116 372,809² 18,029,510
Maintenance
Appropriated
       9,760 56,000 65,760
Cost
       9,668 54,858² 64,526
1Includes $460,000 loaned to other projects.
2Includes adjustments of $310 for new work and $108 for maintenance costs applicable to fiscal year 1955.
Other new work data:
Unobligated balance, June 30, 1956
 $598,013¹
Unobligated balance available for succeeding fiscal year ending June 30, 1957
 598,013
Estimated additional amount needed to be appropriated for completion of existing project
 1,195,000

11. 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 LaGrande 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 1956 is $5,240,000 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. Upstream storage investigation was completed. Channel improvements in the valley to give limited protection during the interim until upstream storage can be developed at a later date was recommended. Surveys and studies in connection with preparation of general design memorandum were continued. Total costs during the fiscal year were $51,348.

Condition at end of fiscal year. General design memorandum is 75 percent complete. No construction has been done. Total costs have been $84,643.

Cost and Financial Summary
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 1952
1952 1953 1954 1955 1956
New Work
Appropriated
 — — $10,000 $30,000 $45,000 $85,000
Cost
 — — 967 32,328 51,348 84,643
Other new work data:
Unobligated balance, fiscal year ending June 30, 1956
 $206
Unobligated balances available for succeeding fiscal year ending June 30, 1957
 206
Estimated additional amount needed to be appropriated for completion of existing project
 5,155,000

12. 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 1956, is $2,780,000 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. Supplemental data to definite project report which has been submitted were approved. Plans and specifications were initiated. Total cost for the fiscal year were $18,827.

Condition at end of fiscal year. Plans and specifications are 5 percent complete. No construction work has been done. Total costs have been $99,997.

Cost and Financial Summary
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 1952
1952 1953 1954 1955 1956
New Work
Appropriated
 —$149 — — $7,000 $40,000 $120,851
Cost
 —2 — — 7,319 18,827 99,997
Other new work data:
Unobligated balance, fiscal year ending June 30, 1956
 $20,854
Unobligated balances available for succeeding fiscal year ending June 30, 1957
 20,854
Estimated additional amount needed to be appropriated for completion of existing project
 2,659,149

13. MILTON-FREEWATER, WALLA WALLA RIVER, OREG.

Location. On both banks of the Walla Walla River between Joe West and McCoy Bridges in the vicinity of Freewater and Milton, Oreg., 8 miles south of Walla Walla, Wash.

Existing Project. The plan of improvement provides for channel rectification and improvement of approximately 7 miles of Walla Walla River in the vicinity of the towns of Milton and Freewater, Oreg. The lower 5.3 miles, between McCoy Bridge and the Milton powerplant, will be protected by levees with necessary revetment and channel improvement designed for a flood of 18,600 cubic feet per second. The upper 1.7 miles, extending from the Milton powerplant upstream to Joe West Bridge, will be improved by some channel clearing and rectification. The existing project was authorized by the Flood Control Act approved August 18, 1941, House Document 719, Seventy-sixth Congress, Third Session. The latest (1953) approved estimate of cost is $890,000 for construction, and $59,600 for lands and damages to be paid by local interests. The project will provide protection for the towns of Milton and Freewater and for other lower lying areas in the Walla Walla River Valley from Milton, Oreg., to McCoy Bridge against floods with a discharge about two times as great as that of the maximum flood of record, which occurred in 1931.

Local Cooperation. Assurances of local cooperation have been furnished. Local interests have contributed $6,300 to cover the cost of their portion of diversion structures.

Operations and results during fiscal year. Investigation of test pits installed during construction was completed.

Total costs for the fiscal year were $802.

Condition at end of fiscal year. Construction of levee and channel improvement has been completed throughout sections 1 to 6 inclusive. This includes all levees and revetments on the project.

Remaining work consists of channel improvement from the upstream limit of the project to station 108. This work is indefinitely postponed pending reopening by sponsors, and is not included in the approved estimate.

Total costs have been $886,956 for new work. In addition, costs and expenditures for new work from contributed funds amounted to $6,300.

Cost and Financial Summary
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 1952
1952 1953 1954 1955 1956
New Work
Appropriated
 — —$125,000 — — —$3,044 $886,956
Cost
 $120,106 149 $14 $1,449 802 886,956

14. 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. Plans and specifications for channel stabilizers and a gaging station were completed and a contract awarded, but no work was done during the fiscal year. Total costs for the fiscal year were $19,630, 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 $433,937 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, 1956, including fiscal years prior to 1952¹
1952 1953 1954 1955 1956
New Work
Appropriated
 — — — — — $2,162,155
Cost
 — — — — — 2,162,155
Maintenance
Appropriated
 $15,000 $17,200 $13,500 $15,180 $134,750 549,530
Cost
 14,899 17,290 17,459 16,583 19,630² 433,937
1In addition, $80,000 for new work was expended from contributed funds.
2Includes adjustment of $33 costs applicable to fiscal year 1955.

15. 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 1956, is $441,000 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 is 98 percent complete. Total costs have been $20,096.

Cost and Financial Summary
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 1952
1952 1953 1954 1955 1956
New Work
Appropriated
 — — — $15,000 $5,700 $20,700
Cost
 — — — 10,000 9,187 20,096
Other new work data:
Unobligated balance, fiscal year ending June 30, 1956
 $604
Appropriated for succeeding fiscal year ending June 30, 1957
 25,000
Unobligated balances available for succeeding fiscal year ending June 30, 1957
 25,604
Estimated additional amount needed to be appropriated for completion of existing project
 395,300¹
1Excluding Riverside Area

16. OTHER AUTHORIZED FLOOD CONTROL PROJECTS

Name of project For last full Report see Annual Report for— Cost and expenditures to June 30, 1956 Estimated amount required to complete
Construction Operation
and
Maintenance
Pullman, Palouse River, Washington 1953 $49,267 — 1,680,7332
Pendleton, Umatilla River, Oreg. 1939 143,263 — (1)
Dayton, Touchet River, Washington 1953 16,064 — 629,9362
Malheur Improvement District near Weiser, Snake River, Idaho 1949 319 — $54,6812
Pilot Rock, Birch Creek, Oreg. 1949 3,700 — $277,3002
Lewiston-Clarkston Levees 1950 — — 4,160,0002,3
Arlington, Alkali Canyon, Oreg. 1950 20,112 — 492,6884
Heise-Roberts Area, Snake River, Idaho 1955 1,575,838 — (1)
(1) Completed.
(2) No funds appropriated for work.
(3) Inactive. Last cost estimate revision 1956.
(4) Inactive. Last cost estimate revision 1954.

17. 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.

Operations and results during fiscal year. The location and stream of each project inspected during the fiscal year are listed below by states:

Oregon:
Union—Catherine Creek
Nyssa—Owyhee River
Idaho:
Lewiston—Clearwater River
Orofino—Clearwater River
Kooskia—Clearwater River
Stites—Clearwater River
Whitebird—Whitebird Creek
Slate Creek—Slate Creek
Graves Creek—Graves Creek
Weiser—Weiser River
Cambridge—Weiser River
Emmett—Payette River
Boise—Boise River
Jack Link Location—Boise River
Slate and Allen Location—Boise River
Strunk Stillwell Location—Boise River
Gooding—Little Wood River
Carey—Little Wood River
Sunnydell Location—Snake River
Heise-Roberts Area—Snake River
Heise Bridge—Snake River
Swan Valley—Snake River
Blackfoot No. 2 Location—Snake River
Pocatello—Portneuf River
Wyoming:
Jackson Hole—Upper Snake River

Total costs during the fiscal year were $3,040.

Cost and Financial Summary
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 1952
1952 1953 1954 1955 1956
New Work
Appropriated
 — $1,000 — $300 $3,000 $5,800
Cost
 $579 652 $324 999 3,040 5,768

18. FLOOD CONTROL WORK UNDER SPECIAL AUTHORIZATION

Snagging and clearing of navigable streams and tributaries in the interests of flood control. (Sec. 13 of the 1946 Flood Control Act.)

In addition to funds previously allotted amounting to $264,184, funds in the amount of $38,205 were allotted during fiscal year 1956, making a total of $302,389, all for new work.

In addition, local interests at Waitsburg, Wash., have contributed $20,000 to cover cost of their portion of Touchet River project, and $1,300 by local interests to cover the cost of their portion of the Price and Morgan intake locations, Jackson Hole, Snake River, Wyo.

Channel clearing and snagging were completed at Lower Swan Valley location, Snake River, Idaho and Dump Creek location, Salmon River, Idaho. Also included in the fiscal year allotments was $10,000 for intermittent work along Little Salmon River between Riggins and New Meadows. The Idaho State Highway Department accomplished most of the propsoed work while repairing U.S. Highway No. 95 and the funds were subsequently revoked.

Total costs from Federal funds during the fiscal year were $53,211. Total costs to June 30, 1956, have been $302,389, all for new work.

Emergency bank protection (sec. 14 or the 1946 Flood Control Act).

In addition to funds previously allotted amounting to $45,276, funds in the amount of $25 were allotted during fiscal year 1956, making a total of $45,301, all for new work.

Total costs during the fiscal year were $6; total costs to June 30, 1956, have been $45,301.

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

Operations during the fiscal year. No construction was accomplished during the fiscal year. Work on the project report on Deep Creek near Potlatch, Idaho was terminated due to lack of ability of local interests to comply with the requirements of local cooperation.

Total costs during the fiscal year were $66. Total costs to June 30, 1956, have been $274,769, 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 $2,660,384, funds in the amount of $460,970 were allotted during the fiscal year, making a total of $3,067,354, all for maintenance.

Flood emergency operations were performed at 17 locations in Idaho, 5 locations in Washington and 6 locations in Wyoming during the fiscal year. Repair and restoration activities were performed at 1 location in Idaho and 3 locations in Wyoming. In addition, local interests contributed $9,252 during the fiscal year for their portion of the repair and restoration work.

Total costs from Federal funds during the fiscal year have been $421,278. Total costs to June 30, 1956, have been $3,050,366.

Cost and Financial Summary
Snagging and Clearing
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 1952
1952 1953 1954 1955 1956
New Work
Appropriated
 — $35,561 $33,400 $18,362 $38,205 $302,389
Cost
 $16,471 1,286 51,086 34,384 53,211² 302,389
1In addition $21,300 was expended from contributed funds by local interests for Touchet River at Waitsburg, Wash.
2Includes adjustment of $5 costs applicable to fiscal year 1955.
Other new work data:
Appropriated for fiscal year ending June 30, 1957
 $12,000
Unobligated balance available for succeeding fiscal year ending June 30, 1957
 12,000

Cost and Financial Summary
Emergency Bank Protection
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 1952
1952 1953 1954 1955 1956
New Work
Appropriated
 —$292 — — $4,000 $25 $45,301
Cost
 — — — 4,019 6 45,301

Cost and Financial Summary
Emergency Flood-Control Work Under Authority of Section 212 of Flood Control Act of 1959
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 1952
1952 1953 1954 1955 1956
New Work
Appropriated
 $120,093 —$67,124 $269,650 —$161,850 — $274,769
Cost
 22,888 14,553 69,859 83,291 $66 274,769
Other new work data:
Appropriated for succeeding fiscal year ending June 30, 1957
 $150,000
Unobligated balance available for succeeding fiscal year ending June 30, 1957
 150,000

Cost and Financial Summary
Flood-Control Emergencies, Repair, Flood Fighting, and Rescue Work
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 1952
1952 1953 1954 1955 1956
New Work
Appropriated
 $46,219 $134,650 $33.2-5 $100,000 $406,970 $3,067,354
Cost
 80,654 132,114 80,234 94,842 421,278² 3,050,366¹
1In addition $64,651 for maintenance was expended from contributed funds: $35,399 for Touchet River at Dayton, Washington; $20,000 for Boise River, Silver Bridge, Idaho; $5,252 for Snake River, Jackson Hole, Wyo.; $1,417 for Snake River, Coulter-Huyler, Wyo.; and $2,583 for Snake River, Heise-Roberts, Idaho.
2Includes adjustment of $603 costs applicable to fiscal year 1955.

19. 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 the operation plan and flood regulation manual for Palisades Reservoir under consideration by the Bureau of Reclamation on the upper Snake River. Operation of existing reservoirs on Boise River, Payette River, and upper Snake River were coordinated with the Bureau of Reclamation and irrigation interests to effect maximum practicable reduction of the spring flood runoff.

Total costs during the fiscal year were $4,679.

Cost and Financial Summary
  Fiscal year ending June 30— Total to June 30, 1956, including fiscal years prior to 1952
1952 1953 1954 1955 1956
New Work
Appropriated
 — — $1,000 $2,000 $4,700 $7,700
Cost
 — — 54 2,880 4,679 7,613

20. EXAMINATIONS AND SURVEYS

Total costs of work during the fiscal year for flood control studies were $51,901.

The Survey Report on Umatilla River and Tributaries, Oregon, and the Review Report on Portneuf River and Marsh Creek, Idaho were completed. Work was continued on the Upper Snake River Survey report and also on the preliminary examination reports, Zintel Canyon, at Kennewick, Wash. and Yakima River near Richland, Wash.

The anticipated allocation of $154,000 for fiscal year 1957 will be applied as follows: Continuation of the Upper Snake River Survey, $75,000; Esquatzel Coulee, Wash., survey, $35,000, and Mill Creek, Tributary of Walla Walla River, Wash., survey, $44,000.

21. COLLECTION AND STUDY OF BASIC DATA

The unobligated balance as of June 30, 1955, in the amount of $448 was revoked during the fiscal year. There were no costs during the fiscal year.

22. RESEARCH AND DEVELOPMENT

The total costs of hydrologic studies during the fiscal year were $2,349.

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