Report of The Secretary of Army
On Civil Works Activities
For Fiscal Year 1975

Department of the Army
U.S. Army Corps of Engineers
Extract Report of The Walla Walla District

Walla Walla District

The district comprises southeastern Wash., exclusive of watershed of Columbia River and tributaries above and including Yakima River, Wash.; all of Idaho except northern part and a small southeastern portion; a portion of western Wyo.; a small part of northeastern Utah; part of northeastern Nev.; and a part of eastern Oreg.

Improvements

Navigation
1. Other Authorized Navigation Projects
Flood Control
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.		 Blackfoot Reservoir, Idaho
Catherine Creek Lake, Oreg.
Columbia River Basin, Local Flood Protection Projects
Jackson Hole, Snake River, Wyo.
Lucky Peak Lake, Idaho
Mill Creek Lake, Wash.
Pullman, Palouse River, Wash.
Ririe Lake, Idaho
Willow Creek Lake, Heppner, Oreg.
Zintel Canyon Dam, Wash.
Inspection of Completed Flood Control Projects
Scheduling Flood Control Reservoir Operations
Other Authorized Flood Control Projects
Flood Control Work Under Special Authorization
Multiple-Purpose Projects Including Power
16.
17.
18.
19.
20.
21.
22.
23.		 Dworshak Dam and Reservoir, Idaho
Ice Harbor Lock and Dam, (Lake Sacajawea), Wash.
Little Goose Lock and Dam (Lake Bryan), Wash.
Lower Granite Lock and Dam, Wash.
Lower Monumental Lock and Dam, Wash.
McNary Lock and Dam (Lake Wallula), Oreg. & Wash.
Snake River Downstream from Johnson Bar Landing, Oreg., Wash., & Idaho
Other Authorized Multiple-Purpose Projects
General Investigations
24.
25.
26.		 Surveys
Collection and Study of Basic Data
Research and Development

*All cost and financial statements for projects are listed at the end of this chapter. All other tables are referenced in text and also appear at the end of this chapter.

NAVIGATION

1. OTHER AUTHORIZED NAVIGATION PROJECTS

See Table 39-C.

FLOOD CONTROL

2. BLACKFOOT RESERVOIR, IDAHO

Location. On Blackfoot River in Caribou County, Idaho, about 40 miles southeast of city of Blackfoot. (See Geological Survey quadrangle sheets Paradise Valley, Cranes Flat, Portneuf, and Henrys Fork location and surroundings in immediate vicinity of project.)

Existing project. See table 39-B for authorizing legislation. Blackfoot Reservoir is owned and operated by Fort Hall Agency of Bureau of Indian Affairs, Department of Interior. Main dam, which is 52 feet high, is a rockfill structure with a concrete core. China Hat Dam, an earthfill structure, closes an arm of reservoir near its upstream end to minimize storage loss due to seepage in pervious formation of that area. Existing main dam structure includes a 3,800-cubic-foot-per-second spillway on the right abutment and an outlet tunnel in left abutment with a capacity of 2,000 cubic feet per second. Reservoir has a usable storage capacity of 413,000 acre-feet at design maximum water surface elevation 6124. However, due to experience with seepage losses from southern end of reservoir, operating level has been limited to about elevation 6120, or about 340,000 acre-feet storage capacity. Water stored in reservoir is used to irrigate lands in Fort Hall Indian Reservation in vicinity of Blackfoot and south. Recommended modifications of the project would provide 38,000 acre-feet additional storage capacity for flood control. Modifications would permit operation of reservoir for flood control to a maximum water surface elevation of 6126. The spillway capacity would be increased to 21,700 cubic feet per second by lowering crest elevation from 6118.5 to 6112 and increasing spillway width from 52 feet to 94 feet. Spillway would be equipped with new gates. Outlet works would be modernized and rehabilitated for flood control operation. China Hat Dam would be raised 10 feet and Idaho State Highway No. 34 would be raised in grade for approximately one-half mile along with grade raising of two existing bridges. Recommended modification was authorized by Flood Control Act of 1962. Construction to be accomplished by the Corps, with continued operation of project by Bureau of Indian Affairs. Estimated Federal cost of proposed modifications (October 1975) is $4,020,000.

Local cooperation. None required.

Operations and results during the fiscal year. As a result of a public meeting held 1 May 1974 and as a part of the review procedure for the environmental impact statement, the District is preparing a supplement to the General Design Memorandum that could result in a lower operating pool level. Submittal of the final environmental impact statement has been delayed pending approval of this supplement.

Condition at end of fiscal year. Hydrology design memorandum has been approved. The general design memorandum has been conditionally approved subject to comments of the Office of Management and Budget on postauthorization changes. The Real Estate Design Memorandum was submitted December 1971 and approved 8 April 1972. The post-authorization report was approved by Office of Management and Budget 9 January 1973.

Opposition to the project has been voiced to the Idaho Congressional Delegation by owners of summer homes adjacent to the reservoir which have been or are being constructed below the existing authorized reservoir storage elevation.

3. CATHERINE CREEK LAKE, OREG.

Location. On Catherine Creek about 8 miles above Union, Oreg., in Section 7, Township 5 South, Range 41 East, Willamette Meridian.

Existing project. See Table 39-B for authorizing legislation. Dam will be an earth embankment with an impervious core protected by sand and gravel filters. Shell material will consist of granular fill covered with rockfill zones on outside surfaces. Upstream face will be protected by riprap. Height will be about 210 feet above streambed and crest length 790 feet. The ungated side-channel spillway will have a capacity of 18,500 cubic feet per second. Lake will have a storage capacity of 61,000 acre-feet with 52,000 acre-feet of usable space at elevation 3435. Improvement will provide for flood control, irrigation, municipal water supply, fish and wildlife, and recreation. Estimated costs (October 1975) are $28,700,000 Federal and $192,000 non-Federal.

Local cooperation. The Water Supply Act of 1958 as amended applies. The City of Union, Oreg., has provided assurances of willingness and ability to meet requirements. Reimbursable costs are estimated to be $107,400 for construction and $40 annually for operation, maintenance, and replacement.

The Federal Water Project Recreation Act of 1965 applies. This requirement for local cooperation was added after submittal of the survey report. Union County Court has submitted a letter of assurance of local cooperation on project recreation. Reimbursable costs for recreation are estimated to be $181,000 for construction and $16,100 annually for operation, maintenance, and replacement.

In accordance with reclamation law, local irrigation interests will be required to repay portions of first costs and annual operations, maintenance, and replacement costs of dam and lake allocated to the irrigation function, currently estimated at $4,722,900 and $27,100, respectively. Portion of construction cost beyond ability of irrigators to repay will be returned to reclamation fund from revenues derived from disposition of power marketed through the Bonneville Power Administration. Irrigation districts are to contract for repayment of cost allocated to irrigation.

Local interests will be required to pay one-fourth of the separable costs allocated to fish and wildlife enhancement, presently estimated at $11,000, and will be responsible for average annual costs of $2,400.

Operations and results during the fiscal year. Additional foundation explorations for the dam and highway relocations were accomplished. The feature design memorandum for all relocations is scheduled for completion in FY 1976.

Condition at end of fiscal year. Construction funds have been appropriated but construction has not started due to a suit filed by the local Indians for injunction to stop construction. The Indians filed suit in the U.S. District Court in Portland, Oregon, on 19 December 1974. The hearing had not been held by the end of the fiscal year. A local committee calling themselves "The Committee for Catherine Creek" was formulated during the year to oppose the construction of the project. This committee, although small, ahs generated much opposition outside of the local area. The final environmental impact statement was filed with the Council on Environmental Quality on 15 January 1975.

4. COLUMBIA RIVER BASIN, LOCAL FLOOD PROTECTION PROJECTS

Location. Improvements included in this project are along Columbia River and its tributaries.

Existing project. Flood Control Act of 1950 approved a general comprehensive plan for Columbia River Basin for flood control and other purposes (H. Doc. 531, 81st Cong., 2d sess.) and authorized $75 million to be appropriated for partial accomplishment of certain projects. Of this authorization, not to exceed $15 million was authorized for construction of local flood protection works throughout Columbia River Basin, subject to conditions that all work undertaken pursuant to this authority shall be economically justified prior to construction, and local cooperation specified in 1936 Flood Control Act, as amended, shall be required. (See Tables 39-B and 39-D for projects in Walla Walla District.)

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 the fiscal year. Restudy reports are being prepared for possible improvements along the Weiser River and in Boise Valley. The report for Weiser River covers the proposed development in the Weiser, Midvale, and Cambridge areas. The report for Boise Valley includes proposed development along Boise River in Ada County.

Condition at end of fiscal year. The restudy reports on Weiser and Boise Rivers are scheduled for completion in fiscal year 1976.

5. JACKSON HOLE, SNAKE RIVER, WYO.

Location. On both banks of Snake River near Wilson, Wyo.

Existing project. See Table 39-B for authorizing legislation. A levee with full riprap protection on right bank, extending from J.Y. Ranch, which is 10 miles upstream from Jackson-Wilson Highway Bridge, to 33.5 miles below same bridge—a total length of 13.5 miles. Also provides a levee with full riprap protection along left bank, extending from north line of Lucas Ranch, which is 10 miles upstream from Jackson-Wilson Highway Bridge, to 5 miles downstream and extending 1.5 miles immediately upstream from Jackson-Wilson Highway Bridge to 3.5 miles below bridge for a total length of 10 miles. Federal cost of completed project was $2,232,681 and $18,500 non-Federal cost consisting of rights-of-way furnished by sponsor.

Local cooperation. Fully complied with.

Operations and results during the fiscal year. The existing levee system is being analyzed to determine what modifications may be warranted or necessary to maintain the integrity of the system, reduce operation and maintenance costs, and reduce future emergency repairs. This study is scheduled for completion in FY 1976. Expenditures for FY 1975 total $51,850.

Condition at end of fiscal year. Construction began November 1957 and was completed May 1964. Design flood flows were experienced during spring of 1965. Direct lateral flow of the river attacked the levee in three separate locations, requiring emergency repairs to avoid an avulsion. Expenditures for emergency repair and ordinary operation and maintenance have continued to be excessive.

6. LUCKY PEAK LAKE, IDAHO

Location. On Boise River in southwestern Idaho about 10 miles southeast of City of Boise, and about 12 miles downstream from Arrowrock Reservoir.

Existing project. See Table 39-B for authorizing legislation. A rolled-earthfill dam about 250 feet high and 1,700 feet long at crest, with a lake providing a total storage at normal pool level of 306,000 acre-feet. For further details see page 2000 of Annual Report for 1962. Project was authorized by 1946 Flood Control Act. Federal cost of completed project was $19,081,250. Expenditures on recreation facilities for completed project have been $295,950, raising total project cost to $19,377,200.

Local cooperation. None required.

Operations and results during the fiscal year. Normal operation for flood control and irrigation continued. A draft Environmental Impact Statement was filed with the Council on Environmental Quality.

Condition at end of fiscal year. Construction of existing project was initiated in November 1949 and completed in June 1961. More than $34,000,000 in potential flood damages have been prevented by the project since 1961.

9. MILL CREEK LAKE, WASH.

Location. In and upstream from Walla Walla, Wash., on Mill creek, a tributary of Walla Walla River.

Existing project. See Table 39-B for authorizing legislation. Off-stream storage dam about 145 feet high and 3,200 feet long at the crest, outlet works, diversion works, and division structures.

Channel through city of Walla Walla was added to project in 1941. For further details see page 2005 of Annual Report for 1962. Federal cost of completed project was $2,162,155. Adding recreation facilities has thus far increased project costs by $68,446 to $2,230,601. Not included in that cost is $80,000 contributed by local interests toward construction of the channel through Walla Walla.

Local cooperation. Fully complied with. For further details see page 2006 of Annual Report for 1962.

Operations and results during the fiscal year. Ordinary general maintenance by Government forces continued, which included routine regulation of lake and care of recreation area. A draft Environmental Impact Statement was filed with the Council on Environmental Quality.

Condition at end of fiscal year. Construction of dam and appurtenant works was completed in 1942. Paving channel through City of Walla Walla was completed in 1948. Park and recreation facilities were opened to public July 1, 1964. A design memorandum for the rehabilitation of reservoir outlet canal to Mill Creek was submitted to higher authority June 1973. About $3,280,000 in potential flood damages have been prevented by the combined storage and channel operation since 1942.

8. PULLMAN, PALOUSE RIVER, WASH.

Location. On South Fork Palouse River and Missouri Flat Creek at Pullman in eastern Washington.

Existing project. See Table 39-B for authorizing legislation. Provides for flood control at Pullman, Wash., by channel rectification and intermittent levee construction along 1.36 miles of South Fork Palouse River and 0.42 mile of Missouri Flat Creek. Estimated Federal cost of project is $6,060,000 at October 1975 price levels. Estimated non-Federal costs are $620,000 for rights-of-way and street, railroad, and bridge modifications.

Local cooperation. In additional to usual requirements, local interests were to make street, railroad and bridge modifications for construction of project. Local interests stated their inability to meet those requirements, and the project was classified inactive in 1964 and reclassified to deferred category June 1969.

Operations and results during the fiscal year. A restudy to determine if an economically justified plan of improvement could be developed that would be generally acceptable to the local people and within the authorized project scope was completed. A report recommending reclassification to active status was submitted to OCE in FY 1975. In a related study, the Corps of Engineers Institute for Water Resources used the Pullman area to test methods for flood plain management. That study was published by IWR in FY 1975.

Condition at end of fiscal year. Restudy report is being reviewed by OCE.

9. RIRIE LAKE, IDAHO

Location. On Willow Creek, a tributary of Snake River, in Bonneville County, Idaho. Proposed channel improvement extends from junction of Sand and Willow Creeks to a point on Snake River about 4 miles upstream from city of Idaho Falls, Idaho. (See Geological Survey quadrangle map, Ucon, Idaho.) Damsite is about 5 miles below confluence of Willow Creek and Meadow Creek and about 15 miles northeast of city of Idaho Falls, Idaho. (See Geological Survey quadrangle map, Poplar, Idaho.)

Existing project. See Table 39-B for authorizing legislation. Provides for a rockfill dam about 840 feet long at the crest and 184 feet high above streambed, and downstream channel construction. Spillway will have a concrete-lined channel in right abutment. Outlet works will utilize a reinforced concrete conduit leading from an intake tower upstream to a stilling basin downstream at the toe of left abutment. Lake will have gross capacity of 100,000 acre-feet; 90,000 acre-feet of active storage for flood control, irrigation and recreation; and 10,000 acre-feet dead storage for sediment storage and conservation. Floodway channel will be about 8.0 miles long and have a capacity of 900 cubic feet per second. Authorization specified that the project shall be constructed by the Corps of Engineers and operated and maintained by the Bureau of Reclamation. Estimated Federal cost of new work (October 1975) is $36,530,000 including $30,000 for value of public-owned lands.

Local cooperation. Fully complied with.

Operations and results during the fiscal year. A master plan was prepared by the Bureau of Reclamation and has been approved. Stream diversion began July 1973. Outlet channel contract awarded for $5,147,814. A Project Transfer Agreement was sent to the Bureau of Reclamation for their consideration. Project Fish & Wildlife Mitigation Agreement was sent to concerned agencies for review. Combination of a strike by the labor force, bad weather, and unanticipated poor foundation conditions has delayed project completion until FY 1977. Main dam construction is about 94 percent complete.

Condition at end of fiscal year. Construction began June 1967. Approximately 97 percent of necessary real estate has been acquired. Entire project is about 68 percent complete. The final Environmental Impact Statement was filed with the Council on Environmental Quality February 13, 1973.

10. WILLOW CREEK LAKE, HEPPNER, OREG.

Location. On Willow Creek just upstream from Heppner and just downstream from junction of Balm Fork and Willow Creek in Section 35, Township 2 South, Range 26 East, Willamette Meridian.

Existing project. See Table 39-B for authorizing legislation. Project will provide flood protection to the City of Heppner and downstream area by controlling runoff from a drainage area of 96 square miles. The dam will be an earth and rockfill structure 149 feet high at crest elevation 2130. Ancillary features include an ungated sidechannel spillway with capacity of 88,000 cfs and an outlet works with capacity of 500 cfs. The outlet works will be uncontrolled except for provisions to release lake inflows dug periods of low flow. Limited recreational facilities will be provided. Gross storage capacity of the project will be 11,500 acre-feet, consisting of 9,500 acre-feet for exclusive flood control and 2,000 acre-feet for fish, wildlife, recreation, sediment accumulation, and esthetics. Estimated Federal project cost (July 1974) is $14,700,000.

Local cooperation. Local interests will not be required to share in construction costs, but will be responsible for administering project lands and water areas for recreation enhancement; paying, contributing in kind, or repaying (through user fees) with interest one-half of the separable costs allocated to recreation enhancement; bearing all costs of operation, maintenance, and replacement of the recreation facilities; and establishing a resident fishery in the lake.

Operations and results during the fiscal year. A reauthorization bill sponsored by the Oregon delegation was passed by the U.S. Congress. The bill was vetoed by the President on 18 December 1974 because of economic reasons. Work on plans, specifications, surveys, and explorations for the damsite and relocations was suspended as a result of the veto.

Condition at end of fiscal year. Project scope has changed since authorization: irrigation has been deferred to some future date, municipal and industrial water supply and water quality control have been dropped, and recreation has been reduced in scope. A reevaluation of project economics, in accordance with ER 1105-2-351, will be required before reauthorization procedures can be resumed.

11. ZINTEL CANYON DAM, WASH.

Location. In Zintel Canyon 2.1 miles southwest of Kennewick, Wash., in Section 16, Township 16, Township 8 North, Range 29 East, Willamette Meridian.

Existing project. See Table 39-B for authorizing legislation. The main dam, 119 feet high above streambed and 850 feet long at the crest, will be primarily of rockfill, with an impervious core protected both upstream and downstream by a sandy gravel filter zone. A dike will extend from near the left abutment of the main dam for a 1,480 feet across a saddle in the left bank; it will have a top width of 20 feet and a maximum height of 29 feet, and will consist mostly of a homogeneous section of sandy silt. The spillway will be an ungated 160-foot wide channel cut through rock in the right abutment; maximum spillway discharge will be 32,300 cubic feet per second. The outlet will consist of a 48-inch conduit through the dam with a fixed orifice at the intake sized to pass a maximum flow of 60 cfs. A supplemental gated opening will permit increased releases up to 165 cfs under maximum streamflow conditions. Downstream channel will consist of 12,000 feet of unimproved natural channel between the damsite and a conduit intake structure, 4,195 feet of buried conduit, and an improved open channel 1,205 feet long. Project will provided flood control for the City of Kennewick, Wash. Storage space behind the dams will be drained completely when not needed.

Project adopted by resolution of House Committee on Public Works December 15, 1970 and by resolution of Senate Committee on Public Works December 17, 1970 under authority of Section 201 of Flood Control Act of 1965 (P.L. 298, 89th Cong.). Estimated Federal cost (October 1975) is $3,800,000. Estimated non-Federal cost for lands and relocations is $422,000.

The final Environmental Impact Statement was filed with the Council on Environmental Quality 8 January 1975.

Local cooperation. City of Kennewick has provided assurances of willingness and ability to meet requirements.

Operations and results during the fiscal year. Post-authorization change report was submitted December 1973. Hydrology and general design memorandums were approved April 1974. Study underway for alternative optimum gravity dam using cement-enriched natural soils.

Condition at end of fiscal year. Preconstruction planning is nearly complete.

12. INSPECTION OF COMPLETED FLOOD CONTROL PROJECTS

Federal law requires local interests to maintain and operate completed local protection projects in accordance with regulations prescribed by Secretary of Army. Inspections were made to determine extent of compliance and to advise local interests as necessary of measures required to correct deficiencies. (See Table 39-E for inspections made during fiscal year.)

Fiscal year costs were $21,000. Total costs to June 30, 1975 were $221,678.

13. SCHEDULING FLOOD CONTROL RESERVOIR OPERATIONS

Functional regulation of non-Corps projects was accomplished under several authorities. Regulation of Palisades, Little Wood, and Anderson Ranch Reservoirs in Idaho, and Bully Creek, Warm Springs, and Agency Valley Reservoirs in Oreg., was coordinated under section 7, Flood Control Act of 1944, and coordinated with the Bureau of Reclamation.

Flood control operations at Jackson Lake, Arrowrock Reservoir, and Lake Lowell were in accordance with formal agreements with the Bureau. Regulation of American Falls, Owyhee, Magic, Mackay, Cascade, and Deadwood Reservoirs, Idaho, for flood control was accomplished under informal agreements. Brownlee, Oxbow, and Hells Canyon Reservoirs provided flood control regulation in accordance with provisions of the Federal Power commission license to Idaho Power Company.

Fiscal year costs were $21,000.

14. OTHER AUTHORIZED FLOOD CONTROL PROJECTS

See Table 39-F.

15. FLOOD CONTROL WORKS UNDER SPECIAL AUTHORIZATION

Flood control activities pursuant to section 205, P.L. 858, 80th Cong., as amended (pre-authorization).

See Table 39-G.

Emergency flood control activities—repair and flood fighting and rescue work (P.L. 99, 84th Cong., and antecedent legislation). Federal costs for fiscal year were $20,565 for advance preparation, $182,485 for flood emergency operations, and $304,904 for repair and restoration.

Snagging and clearing navigable streams and tributaries in interest of flood control (sec. 208, 1954 Flood Control Act. P.L. 780, 83d Cong.). Federal costs for fiscal year for snagging and clearing were $58,998.

MULTIPLE-PURPOSE PROJECTS INCLUDING POWER

16. DWORSHAK DAM AND RESERVOIR, IDAHO

Location. Damsite is on North Fork Clearwater River 1.9 miles above its junction with Clearwater River, near Orofino, Idaho, and about 35 miles east of Lewiston, Idaho.

Existing project. See Table 39-B for authorizing legislation. A straight concrete gravity dam 717 feet in maximum structural height above foundation and 3,300 feet long at crest elevation 1613.. The reservoir has a gross storage capacity of 3,453,000 acre-feet, of which 2,000,000 acre-feet will be effective for both local and regional flood control, and for at-site and downstream power generation. In addition, the reservoir, extending 53 miles into a rugged and relatively inaccessible timberland, will provide important transportation savings in connection with movements of marketable logs and will also afford substantial recreation benefits. Powerhouse will provide two 90,000 and one 220,000 kilowatt generating units initially, with provisions for three additional 220,000 kilowatt units for an ultimate installed capacity of 1,060,000 kilowatts. Principal project data are set forth in Table 39-H.

Fish passage at Dworshak Dam is not feasible, and a hatchery has been built below the dam to assure continuance of fish runs. The reservoir area has been habitat for elk, deer, and other wildlife. Project plans include acquisition of land outside reservoir limits to mitigate losses of big game winter browse areas inundated by reservoir.

Estimated total cost for new work (October 1975) is $314,805,000 consisting of $312,000,000 for construction, $2,740,000 for value of public-domaien lands, and $65,000 for deferred construction on highway district roads following project completion.

Local cooperation. None required.

Operations and results during the fiscal year. New work: Main contract for construction of dam and other features is complete. Construction was completed on a multi-level power intake structure on upstream face of dam so that natural river water temperatures downstream can be duplicated to assure continuance of existing fish runs.

Construction continues on the main dam spillway repairs and Dent recreation area. Construction of powerplant is complete. Reservoir clearing continues and work continued on development of recreation areas. Area schools, impacted by students from the project, received Federal aid under P.L. 90-483. A draft Environmental Impact Statement was filed with the Council on Environmental Quality.

Operation and Maintenance: Deficiencies in power generating units, causing reduction in capacity due to overheating are to be corrected by fiscal year 1976. The contract for debris clearing is complete, but debris left stranded due to a fluctuating and falling lake level refloated at the head and in the spring curtailing the use of recreation facilities and limiting lake use to the lower end. Logging activities in tributaries caused turbidity problems which reduced fish food production and fish population. The fish hatchery captured 1,5060 adult steelhead which produced 5,562,000 eggs, 4,000,000 fry, and 1,750,000 smolts. Fish releases into the reservoir totaled 100,000 bass, 3,085,000 kokanee, and 123,000 dolly varden. A total of 1.70 billion kilowatt hours of electric energy was delivered to Bonneville Power Administration, the marketing agency.

Condition at end of fiscal year. Construction of the project started April 1963 and is estimated to be 93 percent complete; it became operational for flood control October 1971 and has prevented about $727,000 in potential flood damages downstream since then. Log handling facilities have been completed. All project lands have been acquired except those required to replace the loss of wildlife browse areas from inundation by reservoir. Relocations are estimated to be 100 percent complete; dam 100 percent; fish and wildlife facilities 92 percent; powerplant 100 percent; reservoir clearing 86 percent; and recreation facilities 43 percent.

Power generating unit No. 1, 90,000-kw capacity, was put in service March 1, 1973; unit 2, also 90,000-kw capacity, began producing April 6, 1973; unit 3, 220,000-kw capacity, went on the line April 20, 1973.

Eighty mini-recreation sites have been established along the reservoir shoreline. Each site includes at least a picnic table, garbage can, U.S. Forest Service-type fireplace, and chemical toilet. Some of the sites have several picnic tables.

Power generation through June 1975 has been 3.70 billion kilowatt hours, representing a gross income of $22.0 million to the U.S. Treasury from sale of power by Bonneville Power Administration.

17. ICE HARBOR LOCK AND DAM (LAKE SACAJAWEA), WASH.

Location. On Snake River, 9.7 miles above river mouth, at head of McNary Lock and Dam pool, and 12 miles east of Pasco, Wash.

Existing project. See Table 39-B for authorizing legislation. A dam, powerplant, navigation lock, fish ladders, appurtenant facilities, and relocation of railroads. Project provides for navigation, hydroelectric power generation and incidental irrigation. Dam has normal operating range between elevations 440 and 437 mean sea level. The lake extends upstream about 31.9 miles, providing slack water to Lower Monumental Lock and Dam. Structure is about 2,790 feet long and about 130 feet high above streambed. Beginning at south end, project consists of a concrete nonoverflow section, concrete powerhouse, spillway dam, concrete nonoverflow section, navigation lock, and an earth and rockfill embankment at north abutment. Fish passing facilities, including two ladders, are provided. Powerplant now has three 90,000-kilowatt units, and three 111,000-kilowatt units are being installed. Spillway dam is 610 feet long, and overflow crest at elevation 391 mean sea level is surmounted by 10 radial gates, 50 feet wide by 51 feet high, which provide capacity to pass a design flood of 850,000 cubic feet per second. Deck is at elevation 453 mean sea level and provides a service road and track for a gantry crane. Navigation lock is single-lift type with clear plan dimensions of 86 by 665 feet and 15 feet minimum depth over the sills. A navigation channel 250 feet wide and 15 feet deep is provided from mouth of Snake River to dam. Principal project data are set forth in Table 39-H

Estimated cost for new work (October 1975) is $169,336,800 consisting of $129,600,000 for the completed project, $37,900,000 for power units 4 through 6, $87,000 for U.S. Coast Guard navigation aids, $22,300 for value of public-domain lands, $1,645,000 for recreational facilities, and a non-Federal contribution of 82,500 toward an artificial fish spawning channel.

Local cooperation. None required.

Operations and results during the fiscal year. New work: Work is continuing on contracts for turbines, generators, transformers, and governors for power generating unit s4 through 6. An improved irrigation system, a group shelter and modified protection for the swimming area were added at Charbonneau Park and an additional 30 campsites and new well were added at Fishhook Park.

Operation and maintenance: Normal operation and maintenance of navigation lock and powerplant continued, and 3.14 billion kilowatt hours of electric energy were delivered to Bonneville Power Administration, the marketing agency. A total of 1,073,443 tons of cargo passed through navigation lock during calendar year 1974.

Condition at end of fiscal year. Construction started December 1955 and the project was placed in useful operation January 1962. Installation of power unit s4 through 6 is 85 percent complete. Modifications to the fish facilities are 16 percent complete.

An Environmental Impact Statement concerning power units 4 through 6 was filed with the Council on Environmental Quality August 1971.

Power generation through June 1975 has been 28.1 billion kilowatt hours, representing a gross income of $42.7 million to the U.S. Treasury from sale of power by Bonneville Power Administration.

18. LITTLE GOOSE LOCK AND DAM (LAKE BRYAN), WASH.

Location. Dam is 70.3 miles above mouth of Snake River at head of Lower Monumental Lake, about 40 airline miles northerly of Walla Walla, Wash., and 50 miles northwest of Lewiston, Idaho.

Existing project. See Table 39-B for authorizing legislation. A dam, powerplant, navigation lock, fish ladder, and appurtenant facilities. Improvements provide navigation, hydroelectric power generation, recreation, and incidental irrigation. Dam has a normal operating range between elevations 638 and 633 mean sea level. Lake Bryan extends upstream about 37.2 miles and provides slack water to Lower Granite Lock and Dam. Dam structure is 2,670 feet long and about 160 feet high above streambed and consists of a powerhouse, spillway dam, navigation lock, and necessary nonoverflow sections. Fish passing facilities include one ladder with entrances on both shores with a fish channel through spillway which connects to powerhouse fish collection system and south shore ladder. Powerhouse now has three 135,000-kilowatt generating units. The contract has been awarded for three additional 135,000-kilowatt units for an ultimate capacity of 810,000 kilowatts. Spillway dam can pass a design flood of 850,000 cubic feet per second. Navigation lock is single-lift type with clear plan dimensions of 86 by 668 feet and a minimum depth of 15 feet over the sills. Relocations along the lake include 32 miles of Camas Prairie Railroad, 5.8 miles of county roads, 2.2 miles of state highways, and Central Ferry bridge. Principal project data are set forth in Table 39-H.

Estimated cost for new work (October 1975) is $219,189,000 consisting of $160,700,000 for the completed project, $58,100,000 for power units 4 through 6, $87,000 for U.S. Coast Guard navigation aids, and $302,000 for value of publicly owned land.

Local cooperation. None required.

Operations and results during the fiscal year. Installation of traveling fish screens was completed in units 1,2, and 3. The contract has been awarded for installation of the traveling fish screens in units 4, 5, and 6. Additions and revisions were completed to the domestic water system. Construction of recreation facilities and public use areas along Lake Bryan were completed. A draft Enviromental Impact Statement was filed with the Council on Environmental Quality.

Operation and maintenance: A total of 2.71 billion kilowatt hours of electric energy was delivered to Bonneville Power Administration, the marketing agency. A total of 755,877 tons of cargo passed through the navigation lock during calendar year 1974.

Condition at end of fiscal year. Construction began June 1963 and the project was opened to navigation May 1970. Recreational facilities along Lake Bryan are 100 percent complete, and the entire project is about 99 percent complete.

Remaining items of work consist of providing landscaping and visitor facilities at the dam, modifiying the fish facilities, and installing power generating units 4 through 6.

Power generation through June 1975 has been 13.0 billion kilowatt hours, representing a gross income of $18.4 million to the U.S. Treasury from sale of power by Bonneville Power Administration.

19. LOWER GRANITE LOCK AND DAM, WASH.

Location. Project site is at river mile 107.5 on Snake River at head of Lake Bryan, and about 33 miles downstream from Lewiston, Idaho.

Existing project. See Table 39-B for authorizing legislation. Provides for a dam, powerplant, navigation lock, fish ladder, and appurtenant facilities, and requires about 8 miles of backwater levees along Snake and Clearwater Rivers at Lewiston, Idaho. Benefits afforded by project include slack-water navigation, power generation, recreation, and incidental irrigation. Water surface at the dam varies between elevations 738 and 724 to maintain a normal operating range between elevations 738 and 733 in the Lewiston, Idaho-Clarkston, Wash., area. Dam structure is about 3,200 feet long and about 146 feet high above streambed. Powerhouse now has three 135,000-kilowatt units and construction is underway for three additional similar units. Spillway has a capacity for a design flood of 850,000 cubic feet per second. Navigation lock is a single-lift type (105 feet maximum) with clear plan dimensions of 86 by 674 feet and a minimum depth of 15 feet over the sills. Principal project data are set forth in Table 39-H.

Estimated cost for new work (October 1975) is $362,237,000 consisting of $310,000,000 for the initial installation, $52,100,000 for power units 4 through 6, $135,000 for U.S. Coast Guard navigation aids, and $2,000 for value of publicly owned lands.

Local cooperation. None required.

Operations and results during the fiscal year. Additional units concrete placement is continuing. A fingerling bypass was installed in the powerhouse. Generators and turbines were installed in powerhouse bays 1, 2, and 3. The north shore embankment construction was complete.

All relocations work was essentially completed. Raising and modification of the CPRR Bridge over the Clearwater River at Lewiston was finished. Backwater levees in Lewiston are completed.

Design for levee beautification, remaining recreation facilities, and public use areas along the lake is nearly complete.

Operation and maintenance. A total of 0.45 billion kilowatt hours of electric energy were delivered to Bonneville Power Administration, the marketing agency.

Condition at end of fiscal year. Construction started July 1965 and is about 86 percent complete. Acquisition of lands is estimated to be 95 percent complete. Lake was filled 15 February 1975 and the first power generating unit went on the line 15 April 1975. An Environmental Impact Statement was filed with the Council on Environmental Quality November 1971.

Construction completion percentages are: relocation 86; lake area 95; dam 95; navigation lock 100; fish facilities 72; powerplant 91; recreation facilities 36; and backwater levees 100.

Power generation through June 1975 has been 0.45 billion kilowatt hours, representing a gross income of $0.5 million to the U.S. Treasury from sale of power by Bonneville Power Administration.

The Association of Northwest Steelheaders and seven other environmental organizations in March 1970 sued to stop construction of Lower Granite Lock and Dam and to preserve as a natural river the reach of river the impoundment would occupy. The Department of Fisheries and the Department of Game of the State of Washington joined the suit as plaintiffs to require the Corps to consult directly with them on impacts of water resource development on wildlife, to pay them for their services, and to require the Corps to submit their comments or reports to Congress but not to stop the dams under construction or modification of existing dams. Motions were heard at Spokane, Washington, on 12 November 1971 by U.S. Judge William N. Goodwin. On 14 December 1971 he filed a Memorandum of Opinion concluding that the Court lacked jurisdiction and the action of the plaintiffs was dismissed. Notice of appeal to the U.S. Circuit Court of Appeals at San Francisco was filed in January 1972. Appellants Briefs were filed 24 April 1972. The Government's reply Brief was filed in May 1972. Hearings were held on 13 June 1973 at San Francisco and on 21 September 1973 the District Court opinion with instructions to the District Court that the trial court should determine whether each point for relief requested by plaintiffs would constitute such an intolerable burden to Governmental functions when weighed against private harm that dismissal of each point is requested. Pre-trial hearing was held 20 May 1974 at which time the plaintiffs were required to file a restatement of their contentions but no definite time was set for this file to be submitted. The plaintiffs filed amended contentions on 16 June 1975 and 31 July 1975. The Government's reply thereto was due 16 September 1975, however, the U.S. Attorney obtained an extension and the reply was filed on 1 October 1975.

20. LOWER MONUMENTAL LOCK AND DAM, WASH.

Location. On Snake River at head of Lake Sacajawea, about 45 miles northeast of Pasco, Wash., and 41.6 miles above river mouth.

Existing project. See Table 39-B for authorizing legislation. A dam, powerplant, fish ladders, navigation lock, appurtenant facilities, and relocation of railroads and highways. Dam has normal operating range between elevations 540 and 537. The Lake extends about 29 miles upstream to Little Goose Lock and Dam. The Dam is concrete gravity with earthfill and rockfill abutments, is 3,800 feet long including abutments, spillway, navigation lock, and powerhouse, and is about 135 feet high above streambed. There are two fish ladders, one at each end of the dam. Powerhouse has three 135,000-kilowatt units and a contract has been awarded for installation of three additional units of the same size for an ultimate total capacity of 810,000 kilowatts. Spillway is 508 feet long, and overflow crest at elevation 483 feet above mean sea level is surmounted by 8 radial gates, each 50 feet wide and 61 feet high. Deck is at elevation 553 feet and provides a service road and track for a gantry crane. Navigation lock is single-lift type, with lock chamber 86 by 675 feet and minimum depth of 15 feet over the sills. Principal project data are set forth in Table 39-H.

Estimated cost for new work (October 1975) is $241,287,000 consisting of $185,400,000, for the completed project , $55,800,000 for power units 4 through 6, and $87,000 for U.S. Coast Guard navigation aids.

Local cooperation. None required.

Operations and results during the fiscal year. Flip lips have been completed in bays 2 through 7. The landscaping and visitors facilities are complete. Modifications to the domestic water supply system are underway.

Operation and maintenance: Normal operation and maintenance continued. A total of 2.66 billion kilowatt hours of electric energy was delivered to Bonneville Power Administration, the marketing agency. Cargoes totaling 875,474 tons passed through navigation lock during calendar year 1974.

Condition at end of fiscal year. Construction began June 1961, and the project was opened to navigation April 1969. Deferred construction on the Union Pacific Railroad is nearly complete. The entire project is about 99 percent complete.

Power generation through June 1975 has been 16.0 billion kilowatt hours, representing a gross income of $26.0 million to the U.S. Treasury from sale of power by Bonneville Power Administration.

21. McNARY LOCK AND DAM (LAKE WALLULA), OREG. & WASH.

Location. On Columbia River 292 miles above mouth, near Umatilla, Oreg., and 3 miles above mouth of Umatilla River.

Existing project. See Table 39-B for authorizing legislation. A dam 7,365 feet long overall and about 180 feet high above streambed, powerplant with 14 power generating units, navigation lock, fishways, levees and pumping plants, incidental irrigation, and modification of railroad bridges over Columbia and Snake Rivers in order to eliminate hazards to navigation. Principal project data are set forth in Table 39-H.

Estimated total cost for new work (October 1975) is $312,613,000 consisting of $302,900,000 for construction, a net reduction of $851,000 for cost and property transferred from project, $63,000 for Coast Guard navigation aids, and $10,501,000 for modification of the Union Pacific Railroad bridge over Snake River by the Coast Guard. Expenditures on recreation facilities for completed project have been $571,027.

Local cooperation. None required.

Operations and results during the fiscal year. New work: A study is underway to establish the feasibility of installing additional power generating units at the project.

Operation and maintenance: Normal operation and maintenance of project continued. Approximately 7.37 billion kilowatt hours of electric energy were delivered to Bonneville Power Administration, the marketing agency. A total of 3,014,769 tons of commodities passed through the navigation lock.

Condition at end of fiscal year. Construction started May 1947 and is 100 percent complete except for modification of fish facilities for nitrogen control. Project placed on permanent operating basis and lake raised to elevation 340 in November 1953. Except for maintenance interruptions, all 14 power units have been in commercial operation since February 1957. Design for modification of UPRR bridge is complete, with construction scheduled for FY 1976.

Power generation through June 1975 has been 122.6 billion kilowatt hours, representing a gross income of $188.3 million to the U.S. Treasury from sale of power by Bonneville Power Administration. A draft Environmental Impact Statement was filed with Council on Environmental Quality in March 1974.

22. SNAKE RIVER DOWNSTREAM FROM JOHNSON BAR LANDING, OREG., WASH., AND IDAHO

Location. On Snake River downstream from Johnson Bar Landing, river mile 231. Snake River, which is largest tributary of Columbia River, rises in Yellowstone National Park in western part of Wyo., flows generally westerly for about 1,000 miles and empties into Columbia River near Pasco, Wash., 324 miles from Pacific Ocean.

Previous projects. For details see Annual Reports,

Existing project. See Table 39-B for authorizing legislation. The River and Harbor Act of 1945 (H. Doc. 704, 75th Cong., 3d sess.) authorized construction of such dams as necessary for purposes of providing slackwater navigation and irrigation between mouth of Snake River and Lewiston, Idaho. That authorization modified previous authorizations only for that portion of improvement below Lewiston, Idaho. Acts of June 13, 1902, and August 30, 1935, as they pertain to open river improvement from Lewiston, Idaho, to Johnson Bar Landing, remain part of existing project.

Improvements included in existing project and estimated Corps costs are Ice Harbor Lock and Dam—Lake Sacajawea; Little Goose Lock and Dam—Lake Bryan; Lower Granite Lock and Dam; Lower Monumental Lock and Dam; and open-river improvement, Lewiston to Johnson Bar Landing. Each of the four locks and dams is described in an individual report, and cost and financial data for the entire project are shown on Tables 39-A and 39-I.

Local cooperation. None required.

Terminal facilities. On Snake River from the mouth to Johnson Bar there are 11 privately owned barge terminals in use for shipping grain, petroleum products, fertilizers, cement, and other general cargo. There are also 5 marinas and 28 small-boat launching ramps, all open to public use. The facilities serve slackwater navigation to Snake River mile 138, the site of Lewiston, Idaho. That slack-water reaches the Lewiston, Idaho-Clarkston, Wash., area since the lake behind Lower Granite Dam was filled in February 1975.

Operations and results during the fiscal year. See individual reports for Ice Harbor, Lower Monumental, Little Goose, and Lower Granite locks and dams. On Snake River from Lewiston, Idaho, to Johnson Bar Landing, reconnaissance and condition surveys were conducted and navigation aids were maintained.

Condition at end of fiscal year. Ice Harbor, Lower Monumental, Little Goose and Lower Granite are in full operation. Lower Granite construction is about 86 percent complete. (See individual reports for details.)

23. OTHER AUTHORIZED MULTIPLE PURPOSE PROJECTS

See Table 39-J.

GENERAL INVESTIGATIONS

24. SURVEYS

Total cost of surveys during fiscal year was $513,655. That sum was spent for: flood control studies, $461,939; cooperative studies with the Soil Conservation Service and the Bureau of Reclamation, $34,905; a restudy of the Boise Valley, $4,938; and project deauthorization review, $11,873.

25. COLLECTION AND STUDY OF BASIC DATA

During the fiscal year, flood hazard data for a number of locations in the District were collected and analyzed. Flood information was provided to several Federal agencies, to the States of Idaho, Oregon, and Washington, to various cities and counties in these states, and to some private organizations.

Flood plain information reports were completed for Lawyers Creek in the area of Kamiah, Idaho, and Walla Walla River, vicinity of Milton-Freewater, Oregon. A special flood hazard report was prepared on the Boise River vicinity of Caldwell, Idaho.

Total fiscal year costs were $250,642.

31. RESEARCH AND DEVELOPMENT

No special research and development activities were conducted during fiscal year 1975.

 
Table 39-A
Cost and Financial Statement
See
Section
In Text		 Project Funding FY 72 FY 73 FY 74 FY 75 Total to
June 30, 1975
2. Blackfoot Reservoir, Idaho New Work
Approp.
 8,500 45,000 29,363 -18,000 253,179
Cost
 11,392 1,480 46,763 8,233 253,178
3. Catherine Creek Lake, Oreg. New Work
Approp.
 20,000 33,000 400,000 295,000 1,389,000
Cost
 49,560 25,651 346,195 354,470 1,383,169
4. Columbia River Basin Local Flood
Protection Projects (Consolidated)
 New Work
Approp.
 — — -3,000 -12,670 11,090,191
Cost
 1,412 16,326 6,283 309 11,090,191
5. Jackson Hole, Snake River, Wyo. New Work
Approp.
 — — 82,000 69,000 2,383,681
Cost
 — — 75,708 51,850 2,360,239
6. Lucky Peak Lake, Boise River, Idaho New Work
Approp.
 -3,000 — — 20,000 19,397,200¹
Cost
 3,483 20,957 — — 19,377,200¹
Maint.
Approp.
 218,900 261,966 265,723 336,970 2,754,204
Cost
 181,739 236,500 308,414 366,316 2,746,878
7. Mill Creek Lake, Wash. New Work
Approp.
 — — — — 2,230,6012, 3
Cost
 — — — — 2,230,6012, 3
Maint.
Approp.
 135,300 137,334 202,777 202,800 1,980,609
Cost
 174,688 144,197 222,528 199,632 1,887,928
8. Pullman, Palouse River, Wash. New Work
Approp.
 — — 3,000 -2,830 99,540
Cost
 8,837 7,364 3,580 389 99,540
9. Ririe Lake, Idaho New Work
Approp.
 1,389,600 2,728,000 2,945,000 8,458,810 21,121,448
Cost
 795,484 1,675,446 4,295,560 8,887,520 21,032,631
10. Willow Creek Lake, Heppner, Oreg. New Work
Approp.
 282,400 76,000 444,637 -128,810 674,227
Cost
 73,163 167,215 288,964 144,886 674,227
11. Zintel Canyon Dam, Wash. New Work
Approp.
 158,900 40,000 135,000 25,000 358,900
Cost
 81,018 87,848 77,505 112,528 358,899
16. Dworshak Dam and Reservoir, Idaho New Work
Approp.
 45,493,296 23,416,000 8,644,000 9,250,000 287,263,3964
Cost
 43,455,424 23,536,628 10,742,553 9,448,611 287,097,908
New Work
Approp.
 6,900 171,341 819,250 1,124,369 2,121,8605
Approp.
 4,797 157,102 764,449 1,132,167 2,058,515
17. Ice Harbor Lock and Dam (Lake Sacajawea), Wash. New Work
Approp.
 4,806,591 5,611,088 11,245,000 5,490,000 157,309,7456
Cost
 3,489,677 6,083,811 12,124,553 5,499,732 157,224,7446
Maint.
Approp.
 832,000 1,712,028 1,483,408 1,864,929 13,176,949
Cost
 851,263 1,460,106 1,614,794 1,909,066 13,034,988
18. Little Goose Lock and Dam (Lake Bryan), Wash. New Work
Approp.
 6,845,500 1,956,493 1,977,000 2,047,500 162,141,593
Cost
 3,756,150 2,996,877 3,475,156 2,853,295 162,059,333
Maint.
Approp.
 1,171,800 785,410 1,145,972 1,119,170 5,194,113
Cost
 899,736 1,158,475 1,090,529 1,171,702 5,169,085
19. Lower Granite Lock and Dam, Wash. New Work
Approp.
 61,642,900 57,882,000 51,541,000 40,200,500 278,946,223
Cost
 60,815,051 54,498,069 54,890,576 40,882,459 278,671,72111
Maint.
Approp.
 — — — 128,962 128,962
Cost
 — — — 19,607 19,607
20. Lower Monumental Lock and Dam, Wash. New Work
Approp.
 7,587,000 -648,000 3,876,000 1,474,000 184,454,361
Cost
 4,108,107 2,401,842 3,678,804 2,151,546 184,443,798
Maint.
Approp.
 751,000 787,623 811,616 942,609 4,738,187
Cost
 833,822 772,675 812,726 958,304 4,712,995
21. McNary Lock and Dam (Lake Wallula), Wash. New Work
Approp.
 350,609 228,819 1,318,000 1,060,000 292,987,1547
Cost
 535,758 165,665 146,895 1,944,988 292,542,6968
Maint.
Approp.
 2,286,000 3,323,599 3,344,555 3,176,178 39,478,806
Cost
 2,489,085 3,071,000 3,615,671 3,051,514 39,199,468
22. Snake River Downstream from Johnson Bar Landing, Oreg., Wash., &Idaho New Work
Approp.
 80,881,991 72,977,581 60,463,000 49,212,000 782,286,6869
Cost
 72,168,986 65,980,599 74,169,087<./TD> 51,387,032 782,834,3609
Maint.
Approp.
 2,766,600 3,094,941 3,448,095 4,226,924 23,596,03510
Cost
 2,592,139 3,397,565 3,525,112 4,068,679 23,294,25010
1Includes $315,950 allocated for Code 710, Recreation Facilities on Completed Projects.
2Excludes $80,000 contributed funds.
3Includes $68,446, Code 710, Recreation Facilities on Completed Projects.
4Excludes $2,046,100 regular project construction funds transferred to Department of Interior in Fiscal Years 1969 through 1972 for hatchery operations.
5Excludes $2,917,100 regular project operation and maintenance funds transferred to Department of Interior starting Fiscal Year 1972 for hatchery operations.
6Includes $345,150 for Code 710, Recreation Facilities on Completed Projects. Excludes $82,500 contributed for artificial spawning channel.
7Includes $929,154 allotted for Code 710, Recreation Facilities on Completed Projects.
8Includes $850,375 net value of non-appropriation transfers of cost or property from project. Includes $497,256 expended for Code 710, Recreation Facilities on Completed Projects.
9Includes $400,150 for new work on previous projects (Pasco to Lewiston). Excludes $167,500 contributed funds for new work consisting of $85,000 for previous projects (Pasco to Riparia), plus $82,500 for new work on existing artificial spawning channel (Ice Harbor Lock and Dam project).
10Includes $186,570 for maintenance on previous projects (Pasco to Lewiston).
11Excludes $405,819 contributed funds.

 
Table 39-B
Authorizing Legislation
Acts Work Authorized Documents
BLACKFOOT RESERVOIR, IDAHO
(See Section 2 of Text)
Oct. 23, 1962 Modify existing Bureau of Indian Affairs dam to add exclusive flood control storage space. H. Doc. 568, 87th Cong., 2nd Sess.
CATHERINE CREEK LAKE, OREG.
(See Section 3 of Text)
Oct. 27, 1965 Dam and lake for flood control, irrigation, recreation, municipal water supply, and fish and wildlife H. Doc. 280, 89th Cong., 1st Sess.
COLUMBIA RIVER BASIN, ACTIVE LOCAL FLOOD PROTECTION PROJECTS
(See Section 4) of Text)
May 17, 1950 Blackfoot Area. Snake River, Idaho. Levee left bank. H. Doc. 531, 81st Cong., 2d Sess.
Blackfoot River, Idaho. Levees, channel improvement, and rectification works.
Boise Valley, Boise River, Idaho. Channel improvement and enlargement, levees, and revetments in Ada County. Canyon County unit was deauthorized April 18, 1967.
Grande Ronde Valley, Oreg. Levees and channel clearing, straightening, and realignment; would complement stream regulation by upstream storage projects.
Heise-Roberts Extension, Snake River, Idaho. Channel clearing and rectification, levees, and bank protection.
Kendrick, Potlatch River, Idaho. Revetted levee.
Malheur River, Oreg. Channel rectification, levees, and bank protection at Vale. Willow Creek unit was deauthorized October 14, 1969.
Palouse River, Wash. Flood protection for urban and rural areas at Garfield and near Malden.
Payette Valley, Idaho. Channel rectification, levees, and bank protection along 38 miles of Payette River below Black Canyon Dam.
Portneuf River and Marsh Creek, Idaho. Concrete-lined channel through Pocatello. Inkom-Marsh Creek unit was deauthorized October 14, 1969.
Shelley Area, Snake River, Idaho. Bank protection.
Weiser River, Weiser Area, Idaho. Intermittent channel realignment and improvement, levees, and bank protection, lower river area.
(BRUCES EDDY) DWORSHAK DAM AND RESERVOIR, IDAHO
(See Section 16 of Text)
July 3, 1958 Preparation of detailed plans. S. Doc. 51, 84th Cong., 1st Sess.
Oct. 23, 1962 Bruces Eddy dam and reservoir for flood control, navigation, power, recreation, and area redevelopment. H. Doc. 403, 87th Cong., 2d Sess.
Aug. 15, 1963 Redesignation of project as Dworshak Dam and Reservoir. P.L. 88-96
ICE HARBOR LOCK AND DAM—LAKE SACAJAWEA—WASH.
(See Section 17 of Text)
Mar. 2, 1945 Unit 1 of 4, Lower Snake River project. Lock and dam for navigation, power, recreation, and irrigation. H. Doc. 704, 75th Cong., 3d Sess.
JACKSON HOLE, SNAKE RIVER, WYO.
(See Section 5 of Text)
May 17, 1950 Channel rectification, levees, and revetment. H. Doc. 531, 81st Cong., 2d Sess.
LITTLE GOOSE LOCK AND DAM—LAKE BRYAN—WASH.
(See Section 18 of Text)
Mar. 2, 1945 Unit 3 of 4, Lower Snake River project. Lock and dam for navigation, power, recreation, and irrigation. H. Doc. 704, 75th Cong., 3d Sess.
LOWER GRANITE LOCK AND DAM, WASH., AND IDAHO
(See Section 19 of Text)
Mar. 2, 1945 Unit 4 of 4, Lower Snake River project. Lock and dam for navigation, power, recreation, and irrigation. H. Doc. 704, 75th Cong., 3d Sess.
LOWER MONUMENTAL LOCK AND DAM, WASH.
(See Section 20 of Text)
Mar. 2, 1945 Unit 2 of 4, Lower Snake River project. Lock and dam for navigation, power, recreation, and irrigation. H. Doc. 704, 75th Cong., 3d Sess.
LUCKY PEAK LAKE, IDAHO
(See Section 6 of Text)
July 24, 1946 Dam for flood control, irrigation, and recreation. P.L. 526-79
Chief of Engineers Report dated May 13, 1946
McNARY LOCK AND DAM—LAKE WALLULA—OREG., AND WASH.
(See Section 21 of Text)
Mar. 2, 1945 Lock and dam for navigation, power, recreation, and irrigation. H. Doc. 704, 75th Cong., 3d Sess.
MILL CREEK LAKE, WALLA WALLA, WASH.
(See Section 7 of Text)
June 28, 1938 Off-stream storage project upstream from Walla Walla. H. Doc. 578, 75th Cong., 3d Sess.
Aug. 18, 1941 Channel improvement through Walla Walla; concrete-lined channel. H. Doc. 719, 76th Cong., 3d Sess.
PULLMAN, PALOUSE RIVER, WASH.
(See Section 8 of Text)
Dec. 22, 1944 Concrete-lined channel, levees, and revetments. H. Doc. 888, 77th Cong., 2d Sess.
RIRIE LAKE, IDAHO
(See Section 9 of Text)
Oct. 23, 1962 Storage project for flood control, irrigation, recreation & sport fishery. H. Doc. 562, 87th Cong., 2d Sess.
SNAKE RIVER MOUTH TO JOHNSON BAR, WASH. AND IDAHO
(See Section 22 of Text)
  Open-river navigation.  
June 13, 1902 Riparia to Pittsburg Landing. H. Doc. 127, 56th Cong., 2d Sess.
June 25, 1910 Mouth to Riparia. H. Doc. 411, 55th Cong., 2d Sess.
Aug. 30, 1935 Pittsburg Landing to Johnson Bar. Rivers and Harbors Committee Doc. 25, 72d Cong., 1st Sess.
Mar. 2, 1945 Supersedes previous legislation mouth to Lewiston, Idaho, only. See Ice Harbor, Lower Monumental, Little Goose, and Lower Granite Locks and Dams. H. Doc. 704, 75th Cong., 2d Sess.
WILLOW CREEK LAKE, OREG.
(See Section 10 of Text)
Oct. 27, 1965 Storage project for flood control, recreation, and fish and wildlife. H. Doc. 233, 89th Cong., 1st Sess.
ZINTEL CANYON DAM, KENNEWICK, WASH.
(See Section 11 of Text)
Oct. 27, 1965 Dam and storage space for temporary detention of flood flows plus channel improvement downstream. H. Doc. 416, 91st Cong., 2d Sess.

 
Table 39-C
Other Authorized Navigation Projects
Project For Last Full Report See Annual Report For Cost to 30 June 1975
Construction Operation
and
Maintenance
Columbia River and Tributaries above Celilo Falls to Kennewick, WA 1968 1,851,195 1,108,259
Snake River vicinity of Weiser, Idaho²      
1. Obviated by The Dalles, John Day, and McNary Projects.
2. Authorized by Chief of Engineers. Deferred.

 
Table 39-D
Columbia River Basin, Local Flood Protection Projects
(See Section 4 of Text)
Project Estimated
Federal
Cost 		Status June 30, 1975
Appropriated Cost
Blackfoot Area, Snake River, Idaho¹ ² 42,796 42,796
Blackfoot River, Idaho¹ ² 391,143 391,143
Boise Valle, Idaho¹
Ada County Unit3, 4
 1,060,000 46,084 46,084
Canyon County Unit (Deauthorized April 18, 1967) (Final Report)
 — 10,600 10,600
Camas Creek (Deauthorized March 23, 1965) (Final Report) — 9,080 9,080
Grande Ronde Valley, Oreg.1, 4 8,639,000 102,458 102,458
Heise-Roberts Extension, Idaho¹
Henrys Fork Unit4
² 27,800 27,800
Snake River Unit
 ² 3,375,158 3,375,158
Kendrick, Potlatch River, Idaho¹ ² 59,942 59,942
Little Wood River, Carey, Idaho (Deauthorized April 21, 1965)1 (Final Report) — 21,334 21,334
Lower Walla Walla River, Wash. (not feasible) — 4,000 4,000
Malheur River, Oreg.
Vale Unit¹
 ² 325,581 325,581
Willow Creek Unit (Deauthorized October 14, 1969)1 (Final Report)
 — 13,000 13,000
Mill Creek, Wash. (not feasible) — 3,537 3,537
Mud Lake Area, Idaho (not feasible) — 5,996 5,996
Palouse River, Wash.4 914,000 — —
Payette Valley, Idaho4 — 23,178 23,178
Portneuf River and Marsh Creek, Idaho ¹
Pocatello Unit
 ² 6,456,032 6,456,0325
Inkom-Marsh Creek Unit (Deauthorized October 14, 1969)
(Final Report)
 — — —
Shelley Area, Snake River, Idaho¹ ² 32,335 32,335
South Fork Clearwater River, Idaho6 — 3,899 3,899
Teton River, Idaho (not feasible) — 10,387 10,387
Touchet River, Wash. (not feasible) — 11,198 11,198
Weiser, River, Idaho1, 4 1,565,000 112,757 112,7577
Whitebird Creek, Idaho6 — 1,896 1,896
TOTAL   11,090,191 11,090,191
1. See Table 39-F.
2. Completed Project.
3. Economic justification of work proposed has been established in compliance with conditions set forth in Flood Control Act of 1950.
4. Deferred for restudy.
5. Exclusive of $36,800 contributed funds.
6. Emergency construction at this location has obviated need for project.
7. Includes $75,000 spent on infeasible Cambridge and Midvale areas.

 
Table 39-E
Inspection of Completed Flood Control Projects
(See Section 12 of Text)
Project Date Completed Project Date Completed
Colfax, Palouse River, Wash. February 1975 Malheur Improvement District, Snake River, Oreg. March 1975
Dayton, Touchet River, Wash. February 1975 Malheur River, Vale, Oreg. March 1975
Gooding Area, Little Wood River, Idaho September 1974 Milton-Freewater, Walla Walla River, Oreg. March 1975
Heise-Roberts Area, Snake River, Idaho August 1974 Mission Creek, Idaho February 1975
Heise-Roberts Extension, Snake River, Idaho August 1974 Pocatello Unit, Portneuf River, Idaho September 1974
Jackson Hole, Snake River, Wyo. August 1974 Tomanovich-Salmon City, Salmon River, Idaho April 1975
Kendrick, Potlatch River, and Bear Creek, Idaho February 1975 Tucannon River, Camp Wooten, Wash. February 1975
Lapwai Creek, Culdesac, Idaho February 1975 West Richland, Yakima River, Wash. October 1974
Lower Dry Creek, Lowden, Wash. April 1975    

 
Table 39-F
Other Authorized Flood Control Projects
Project For Last Full Report See Annual Report For: Cost to June 30, 1975
Construction Operation and Maintenance)
Bear Creek, Kendrick, Idaho1, 2 1970 133,518 —
Blackfoot Area, Snake River, Columbia River Basin, Idaho¹ 1958 42,796 —
Blackfoot River, Columbia River Basin, Idaho¹ 1965 391,143 —
Boise Valley, Columbia River Basin, Idaho 1967    
Ada County Unit³
   46,084 —
Canyon County Unit4 (Final Report)
   10,600 —
Colfax, Palouse River, Wash.¹ 196 5,557,240 —
Cottonwood Creek Dam, Boise, Idaho 1973 183,100 —
Dayton, Touchet River, Wash.¹ 1966 380,617 —
Esquatzel Coulee, Connell, Wash.1, 2 1967 292,792 —
Gooding Area, Idaho1, 2 1954 59,167 —
Grande Ronde Lake, Oreg. 1966   —
Grande Ronde Valley, Columbia River Basin, Oreg.³ 1958 102,458 —
Heise-Roberts Area, Snake River, Idaho¹ 1955 1,575,838 —
Heise-Roberts Extension, Columbia River Basin, Idaho 1968    
Henrys Fork Unit³
   27,800 —
Snake River Unit¹
   3,375,158 —
Kendrick, Potlatch River, Columbia River Basin, Idaho¹ 1960 59,942 —
Lapwai Creek, Culdesac, Idaho1, 2 1972 176,833 —
Lewiston Levees5 1970 — —
Little Wood River (Carey), Columbia River Basin, Idaho 4 (Final Report) 1960 21,334 —
Lower Dry Creek, Lowden, Wash.1, 2 1961 402,018 —
Lyman Creek, Idaho1, 2 1971 230,315 —
Malheur Improvement District, Snake River, Oreg.¹ 1957 55,894 —
Malheur River, Columbia River Basin, Oreg. 1961  
Vale Unit¹
   325,580 —
Willow Creek Unit4 (Final Report)
   13,000 —
Milton-Freewater, Walla Walla River, Oreg.¹ 1968 2,337,6286 —
Mission and Lapwai Creeks, Idaho1, 2 1965 54,538 —
Portneuf River and Marsh Creek, Columbia River Basin, Idaho 1969  
Inkom-Marsh Creek Unit4 (Final Report)
   — —
Pocatello Unit¹
   6,456,032 —
Shelley Area, Snake River, Columbia River Basin, Idaho¹ 1958 32,335 —
Stuart Gulch Dam, Boise, Idaho 1974 234,1008 —
Tomanovich-Salmon City, Idaho1, 2 1955 128,635 —
Tucannon River, Camp Wooten, Wash.1, 2 1971 73,932 —
Weiser River, Columbia River Basin, Idaho³ 1960 112,7577 —
Yakima River, West Richland, Wash.1, 2 1964 238,890 —
1Completed project.
2Authorized by Chief of Engineers.
3Deferred for restudy.
4Deauthorized. For specific data, see Table 39-D.
5Withdrawn as a local flood protection project in June 1959. Included as a feature of Lower Granite Lock and Dam, Snake River, Wash.
6Exclusive of $6,3000 contributed funds. Includes $550,875 spent under Public Law 99 authority.
7Includes an estimated $75,000 spent for planning on infeasible areas.
8Inactive. Five-year limitation on project authorization began May 17, 1974.

 
Table 39-G
Flood Control Works Under Special Authorization
(See Section 15 of Text)
Project Fiscal Year Costs
Little Canyon Creek, Glenns Ferry, Idaho $6,289
Mud Lake, Idaho 7,151
Payette River, Idaho - Chapman Location 7,694

 
Table 39-H
Principal Data Concerning Navigation Lock, Spillway Dam, Powerplant, and Impoundment
Project
Dworshak Dam and Reservoir, ID
(See Section 16 of Text)		 SPILLWAY DAM
Type of Construction Concrete Gravity
Completed Under Construction
Maximum Capacity 150,500 cfs¹
Crest Elevation 1613 cfs
Control Gates:
Type
 Tainter
Size, Width by Height
 50 by 56 ft
Number
 2
POWERPLANT
Length 428 ft
Generating Units:
Number Installed
 3
Space for Additional
 3
Rating, Each
 2 @ 90,000 kW³
4 @ 220,000 kW
Total Capacity Installed
 400,000 kW
Total Potential Capacity
 1,060,000 kW
Minimum Structural Height 150 ft
First Power-On-Line March 1973
IMPOUNDMENT
Elevations:
Normal Operating Range
1600 to 1445 ft
Maximum
1605 ft
Flood Control Storage 2,000,000 ac-ft
Lake Length 53 mi
Lake Water Surface Area at Elevation 1,600 17,090 acres
Length of Shoreline 175 miles
Ice Harbor Lock and Dam, WA
(See Section 17 of Text)		 NAVIGATION LOCK
Clear Width 86 ft
Clear Length 675 ft
Lift:
Minimum
 97 ft
Average
 100 ft
Maximum
 103 ft
Minimum Water Depth Over Sills 15 ft
Open to Navigation May 1962
SPILLWAY DAM
Type of Construction Concrete Gravity
Completed January 1962
Maximum Capacity 850,000 cf
Crest Elevation 391 ft
Control Gates
Type
 Tainter
Size, Width by Height
 50 by 51 ft
Number
 10
POWERPLANT
Length 671 feet
Generating Units:
Number Installed
 3
Number Under Construction
 3
Rating, Each
 3 @ 90,000 kW
3 @ 111,000 kW
Total Installed Capacity
 270,000 kW
Total Capacity to be Installed
 603,000 kW
Maximum Structural Height 226 ft
First Power-On-Line December 1961
IMPOUNDMENT
Elevations:
Normal Operating Range
 440 to 437 ft
Maximum
 446 ft
Lake Length 31.9 mi
Lake Water Surface Area at Elevation 440 9,200 ac
Navigation Channel, Depth by Width 14 by 250 ft
Length of Shoreline 80 mi
Little Goose Lock and Dam, WA
(See Section 18 of Text)		 NAVIGATION LOCK
Clear Width 86 ft
Clear Length 675 ft
Lift:
Minimum
 93 ft
Average
 98 ft
Maximum
 101 ft
Minimum Water Depth Over Sills 15 ft
Opened to Navigation May 1970
SPILLWAY DAM
Type of Construction Concrete Gravity
Completed January 1970
Maximum Capacity 850,000 cfs
Crest Elevation 581 ft
Control Gates:
Type
 Tainter
Size, Width by Height
 50 by 60 ft
Number
 8
POWERPLANT
Length 656 ft
Width 243 ft
Generating Units:
Number Installed
 3
Additional Under Construction
 3
Rating, Each
 135,000 kW
Total Capacity Installed
 405,000 kW
Total Capacity to be Installed
 810,000 kW
Maximum Structural Height 243 ft
First Power-On-Line March 1970
IMPOUNDMENT
Elevations:
Normal Operating Range
 638 to 633 ft
Maximum
 646.5 ft
Lake Length 37.2 mi
Lake Water Surface Area at Elevation 738 10,025 ac
Navigation Channel, Depth by Width 14 by 250 ft
Length of Shoreline 92 mi
Lower Granite Lock and Dam, WA
(See Section 19 of Text)		 NAVIGATION LOCK
Clear Width 86 ft
Clear Length 674 ft
Lift:
Minimum
 95 ft
Average
 100
Maximum
 105 ft
Minimum Water Depth Over Sills 15 ft
Opened to Navigation May 1975
SPILLWAY DAM
Type of Construction Concrete Gravity
Maximum Capacity 850,000 cfs
Crest Elevation 581 ft
Control Gates:
Type
 Tainter
Size, Width by Height
 50 by 60.5 ft
Number
 8
POWERPLANT
Length 656 ft
Width 243 ft
Generating Units:
Number Installed
 3
Additional Under Construction
 3
Rating, Each
 135,000 kW
Total Capacity Installed
 405,000 kW
Total Capacity to be Installed
 810,000 kW
Maximum Structural Height 246 ft
First Power-On-Line April 1975
IMPOUNDMENT
Elevations:
Normal Operation Range
738 to 733 ft
Maximum
746.5 ft
Lake Length 39 mi
Lake Water Surface Area at Elevation 738 8,900 ac
Navigation Channel, Depth by Width 14 by 250 ft
Length of Shoreline 91 mi
Lower Monumental Lock and Dam, WA
(See Section 20 of Text)		 NAVIGATION LOCK
Clear Width 86 ft
Clear Length 675 ft
Lift:
Minimum
97 ft
Average
98 ft
Maximum
103 ft
Minimum Water Depth Over Sills 15 ft
Opened to Navigation April 1969
SPILLWAY DAM
Type of Construction Concrete Gravity
Completed March 1969
Maximum Capacity 850,000 cfs
Crest Elevation 483 ft
Control Gates:
Type
Tainter
Size, Width by Height
50 by 61 ft
Number
8
POWERPLANT
Length 656 ft
Width 243 ft
Generating Units:
Number Installed
3
Additional Under Construction
3
Rating, Each
135,000 kW
Total Capacity Installed
405,000 kW
Total Capacity to be Installed
810,000 kW
Maximum Structural Height 242 ft
First Power-On-Line May 1969
IMPOUNDMENT
Elevations:
Normal Operating Range:
540 to 537 ft
Maximum
548 ft
Lake Length 28.7 mi
Lake Water Surface Area at Elevation 540 6,590 ac
Navigation Channel, Depth by Width 14 by 250 ft
Length of Shoreline 78 mi
McNary Lock and Dam, OR and WA
(See Section 21 of Text)		 NAVIGATION LOCK
Clear Width 86 ft
Clear Length 675 ft
Lift:
Minimum
67 ft
Average
75 ft
Maximum
92 ft
Minimum Water Depth Over Sills 15 ft
Open to Navigation November 1953
SPILLWAY DAM
Type of Contruction Concrete Gravity
Completed October 1953
Maximum Capacity 2,200,000 cfs
Crest Elevation 291 ft
Control Gates:
Type Vertical Lift
Size, Width by Height 50 by 51 ft
Number 22
POWERPLANT
Length 1,348 ft
Width 241 ft
Generating Units:
Number Installed
14
Rating, Each
70,000 kW
Total Capacity Installed
980,000 kW
Maximum Structural Height 193 ft
First Power-On-Line November 1953
IMPOUNDMENT
Elevations:
Normal Operating Range
340 to 335 ft
Maximum
356.5 ft
Lake Length 64 mi
Lake Water Surface Area at Elevation 340 38,800 ac
Navigation Channel, Depth by Width 14 by 250 ft
Length of Shoreline 242 mi

 
Table 39-I
Snake River Downstream From Johnson Bar Landing, OR, WA, and ID
(See Section 22 of Text)
Project Estimated Cost (Corps of Engineers Funds Only) New Work
to June 30, 1975 		Maintenance to
June 30, 1975 		Percent
Completed		 Constr.
Started
Approp. Cost Approp. Cost
Ice Harbor Lock and Dam
Initial Project 129,622,300 129,578,479 129,578,479 13,176,949 13,034,988 — FY 56
Code 710 Rec Facilities 1,645,000 345k150 270,809 — — — FY 57
Power Units 4-6 36,900,000 27,386,116 27,375,456 — — — FY 71
Totals
 169,167,300 157,309,745 157,777,642 13,176,949 13,034,988 93  
Little Goose Lock and Dam
Initial Project 160,687,000 159,784,215 159,777,642 5,194,113 5,169,085 — FY 63
Power Units 4-6 58,100,000 2,357,378 2,281,691 — — — FY 74
Totals
 218,787,000 162,141,593 162,059,333 5,194,113 5,169,085 74  
Lower Granite Lock and Dam
Initial Project 310,000,000 276,574,723 276,378,796 128,962 19,607 — FY 65
Power Units 4-6 52,100,000 2,371,500 2,292,925 — — — FY 74
Totals
 362,100,000 278,946,223 278,671,721 128,962 19,607 77  
Lower Monumental Lock and Dam
Initial Project 185,400,000 184,109,361 184,105,660 4,738,187 4,712,995 — FY 61
Power Units 4-6 55,800,000 345,000 338,138 — — — FY 75
Totals
 241,200,000 184,454,361 184,443,798 4,738,187 4,712,995 76  
Open River Lewiston to Johnson Bar Landing 34,613 34,613¹ 34,613 166,904; 166,655    
Open River Pasco to Lewiston — — — 4,350 4,350    
Totals Existing Project
 991,288,913 782,886,535 782,434,209 23,409,465 23,107,680 79  
Previous Projects Pasco to Lewiston 400,150 400,150 400,150 186,570 186,570    
Totals Authorized Project
 991,689,063 783,286,685 782,834,359 23,596,035 23,294,250    
1New work appropriations used for maintenance prior to 1953.

 
Table 39-J
Other Authorized Multipurpose Projects, Including Power
Project For Last Full Report See Annual Report For: Cost to June 30, 1975
Construction Operation and Maintenance
Asotin Dam, Snake River, Idaho and Wash. 1964 — —

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