Report of The Secretary of Army
On Civil Works Activities
For Fiscal Year 1969

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

Walla Walla, Wash., 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 Oregon.

Improvements

Navigation
1. Other Authorized Navigation Projects
Flood Control
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.		 Bear Creek, Kendrick, Idaho
Blackfoot Reservoir, Idaho
Catherine Creek Lake, Oregon
Columbia River Basin, Local Flood Protection Projects
Cottonwood Creek Reservoir, Idaho
John Day River, Oreg., Columbia River Basin, Local Flood Protection Project
Lapwai Creek, Culdesac, Idaho
Lucky Peak Reservoir, Idaho
Lyman Creek, Idaho
Mill Creek Reservoir, Washington
Portneuf River, Lava Hot Springs, Idaho
Portneuf River and Marsh Creek, Columbia River Basin, Idaho
Ririe Reservoir, Willow Creek, Idaho
Stuart Gulch Reservoir, Boise, Idaho
Tucannon River, Camp Wooten, 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
21.
22.
23.
24.
25.
26.
27.
28.
29.		 Dworshak Dam and Reservoir, Idaho
Ice Harbor Lock and Dam, Snake River, Wash.
John Day Lock and Dam, Columbia River, Oregon & Wash.
Little Goose Lock and Dam, Snake River, Wash.
Lower Granite Lock and Dam, Snake River, Wash.
Lower Monumental Lock and Dam, Snake River, Wash.
McNary Lock and Dam, Columbia River, Oregon & Wash.
Snake River Downstream from Johnson Bar Landing, Oregon, Washington, & Idaho
Other Authorized Multiple-Purpose Projects
General Investigations
30.
31.
32.		 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-B.

FLOOD CONTROL

2. BEAR CREEK, KENDRICK, IDAHO

Location. On left bank of Bear Creek immediately upstream from its confluence with Potlatch River in west central section of Idaho near village of Kendrick.

Existing project. Plan of improvement provides for construction of a revetted levee approximately 1,200 feet long, and channel renovation. Protection provides against a flood of 8,800 cfs which has an estimated exceedance interval of about once in 200 years. Project was adopted by Chief of Engineers March 11, 1968 under authority of section 205, 1948 Flood Control Act, as amended. Estimated costs of completed project (July 1969) are $113,500, Federal, and $1,750 non-Federal for rights-of-way.

Local cooperation. Section 3, Flood Control Act of June 22, 1936, as amended, applies. A letter of intent to meet requirements of local cooperation has been received from village of Kendrick.

Operations and results during fiscal year. Preparation of plans and specifications was completed.

Condition at end of fiscal year. Project is ready for construction.

3. 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. Blackfoot Dam and 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 2,700 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 15,800 cubic feet per second by lowering crest elevation from 6118.5 to 6111.7 and increasing spillway width from 52 feet to 93 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 8 feet and Idaho State Highway No. 34 would be raised in grade for approximately ½ 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 (July 1969) is $2,240,000.

Local cooperation. None required.

Operations and results during the fiscal year. Preparation continued of a general design memorandum which incorporates design changes required for increased spillway design flood.

Condition at end of fiscal year. Modification of Blackfoot Reservoir project in interest of increased flood control or Blackfoot River Basin was first presented as a potential project in review report for Upper Snake River Basin dated 1961, which was prepared jointly by Walla Walla District and Regional Office of Bureau of Reclamation in Boise, Idaho. That review report was authorized by a Senate Resolution adopted March 19, 1954, which requested a review of House Doc. 531, 81st Congress, 2nd session, with particular reference to Upper Snake River Basin above Weiser, Idaho. In referenced review report, modification of Blackfoot Reservoir project was presented as one of the potential projects warranting early consideration for construction. Interim report on modification of Blackfoot Reservoir, dated March 1962, included additional information and analysis of February 1962 floods and confirmed project economic feasibility. Its is on this latter report that congressional authorization is based. Design memorandum for hydrology is complete. Foundation exploration drilling at China Hat Dam and at Blackfoot Dam is complete. General Design Memorandum is 95 percent complete and is scheduled for submission in July 1969.

4. 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. 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. Effective height will be about 197 feet and crest length 790 feet. A spillway will be in a saddle in left abutment about 1,000 feet from the dam. Spillway will have three 15- by 18.5-foot tainter gates having a capacity of 11,740 cubic feet per second. Reservoir will contain 61,000 acre-feet of water with 58,000 acre-feet of usable space at elevation 3440. Improvement will provide for flood control, irrigation, municipal and industrial water supply, water quality control, fish and wildlife, recreation, and downstream hydroelectric power. Project was authorized by 1965 Flood Control Act. Estimated Federal cost (July 1969) is $10,800,000.

Local cooperation. The Water Supply Act of 1958 as amended applies. The city of Union, Oreg., by letter dated September 27, 1961, has provided assurances of willingness and ability to meet requirements. Reimbursable costs are estimated to be $347,000 for construction and $1,000 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. Negotiations are now underway to obtain a letter of assurance from a responsible non-Federal public body. Reimbursable costs for recreation are estimated to be $337,000 for construction and $31,000 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 reservoir allocated to the irrigation function, currently estimated at $1,561,000 and $12,300, 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 now being organized will contract for repayment of cost allocated to irrigation.

Operations and results during the fiscal year. Preparation of the general design memorandum was started with emphasis on gathering basic field information and coordination with the Bureau of Reclamation and other agencies. Mapping and foundation explorations were carried on to the extent of available funds.

Condition at end of fiscal year. Preconstruction planning is approximately 14 percent complete and no construction has been done.

5. 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 table 39-C for local flood projects in Walla Walla District.) (Note: This table 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 the fiscal year. Costs were incurred on following fully authorized projects which are reported in detail in individual reports: John Day River Area, Oregon; and Portneuf River and Marsh Creek, Idaho.

Condition at end of fiscal year. Following projects are reported in detail in individual reports: John Day River Area, Oregon; and Portneuf River and Marsh Creek, Idaho.

6. COTTONWOOD CREEK RESERVOIR, IDAHO

Location. On Cottonwood Creek at east city limits of Boise in Ada County, Idaho, in Section 2, Township 3 North, Range 2 East, Boise Meridian.

Existing project. Plan of improvement provides for an earthfill dam with central impervious core, protected filter zone downstream from core and outer zones of random fill. A horizontal drainage blanket downstream from impervious core and a gravel blanket two feet thick will be used for protection of faces against erosion. Dam will be 96 feet high, 24 feet wide at top and 480 feet long at crest. Storage capacity will be 1050 acre-feet at spillway crest elevation with a surface area of 43 acres. A spillway in left abutment will have a capacity of 33,500 cfs and will be 100 feet wide with concrete sill and 100-foot-wide rock channel. Outlet works with capacity of 250 cubic feet per second will consist of an ungated concrete conduit 39 inches in diameter, with trashrack intake and impact stilling basin. Project provides flood control for City of Boise, Idaho.

Project was authorized under Flood Control Act of 1966 (H. Doc. 486, 89th Cong.). Estimated Federal cost (July 1969) is $2,450,000. Estimated non-Federal cost of lands, damages, and relocations is $466,000.

Local cooperation. Local interests are required to provide lands, easements, and rights-of-way and all relocations required for the project; hold and save the United States free from damages incident to construction; and to operate and maintain project upon completion.

Operations and results during the fiscal year. Preparation of hydrology design memorandum and of general design memorandum started and continued throughout the year.

Condition at end of fiscal year. Hydrology design memorandum is 94 percent complete, and general design memorandum is 90 percent complete.

7. JOHN DAY RIVER, OREG., COLUMBIA RIVER BASIN, LOCAL FLOOD PROTECTION PROJECT

Location. Along the John Day River and Canyon Creek (4.7 miles), in the vicinity of John Day, Oreg. (River Mile 242), and along the John Day River (1.9 miles) in the vicinity of Mount Vernon, Oreg. (River Mile 234).

Existing project. The plan provides for channel improvements and intermittent levee along John Day River and Canyon Creek in the vicinity of John Day and Mount Vernon, Oreg., for a distance of 6.6 miles. Downstream limits of the project in the Mount Vernon area at river mile 233 and the upstream limits in the John Day area are at river mile 243. Project was conditionally authorized under Columbia River Basin plan by section 204, Flood Control Act of 1950, subject to economic justification, which was established in 1962. Estimated Federal cost (July 1969) is $792,000. Estimated non-Federal cost (July 1969) is $203,000 for rights-of-way, irrigation facilities, bridge alterations and relocations. These amounts apply only to aforementioned locations determined to be economically feasible.

Local cooperation. Section 3, Flood Control Act of June 22, 1936, as amended, applies. Assurance resolutions from Grant County and John Day city officials have been accepted.

Operations and results during the fiscal year. Preparation of plans and specifications continued.

Condition at end of fiscal year. Plans and specifications are estimated to be 70 percent complete. No construction has been done.

8. LAPWAI CREEK, CULDESAC, IDAHO

Location. On Lapwai Creek through village of Culdesac, Idaho, 20 miles east of Lewiston, Idaho.

Existing project. Plan of improvement provides for minor channel reshaping and riprap placement along left bank levee, with all bridge abutments to be riprapped on both banks. Proposed work covers a reach of approximately 3,200 feet. Project was adopted by Chief of Engineers April 18, 1969 under authority of section 205 of the 1948 Flood Control At, as amended. Estimated costs (1968) are $105,500 Federal and $3,350 non-Federal for rights-of-way, removal of structures, and relocation of utilities.

Local cooperation. Section 3, Flood Control Act of June 22, 1936, as amended, applies. A letter of intent to meet requirements of local cooperation has been received from Board of Trustees for village of Culdesac.

Operations and results during the fiscal year. Preparation of plans and specifications began.

Condition at end of fiscal year. Preparation of plans and specifications is estimated to be 2 percent complete.

9. LUCKY PEAK RESERVOIR, 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. A rolled-earthfill dam about 250 feet high and 1,700 feet long at crest, with a reservoir 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. Construction of additional recreation facilities for completed project is estimated to cost $474,000 (July 1969), raising total project estimate to $19,555,250.

Local cooperation. None required.

Operations and results during the fiscal year. New work: Operation and Maintenance: Normal operation for flood control and irrigation continued. A contract for $3,500 was awarded and completed for painting miscellaneous metal in the intake tower. Lake water quality studies continued.

Condition at end of fiscal year. Construction of existing project was initiated in November 1949 and completed in June 1961. Improvement and enlargement of recreation facilities by Federal agencies and local interests continue.

10. LYMAN CREEK, IDAHO

Location. New channel starting from a point where Union Pacific Railroad crosses Lyman Creek and extending southwest to Snake River north or Ririe. The general area lies approximately 9.5 miles south of Rexburg.

Existing project. Plan provides for about 4,500 feet of new channel construction with levees along both banks and riprap protection at sharp turns. Proposed channel is designed for a flood of 1,500 cubic feet per second. Project was adopted by Chief of Engineers May 1967, under authority of section 205, 1948 Flood Control Act, as amended. Estimated Federal cost (1 April 1968) is $212,000. Non-Federal cost is estimated to be $21,900 for right-of-way, bridge replacement, and relocations.

Local cooperation. Section 3, Flood Control Act of 1936, as amended, applies. Assurance resolution from Sunnydell District has been accepted.

Operations and results during the fiscal year. Construction plans and specifications were completed.

Condition at end of fiscal year. Construction plans are complete and right-of-way acquired. However, due to disbursement limitations, no construction has been accomplished.

11. MILL CREEK RESERVOIR, WASH.

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

Existing project. Off-stream storage dam, outlet works, diversion works, and diversion structure were authorized by 1938 Flood Control Act. Channel through city of Walla Walla was added to project by 1941 Flood Control Act (H. Doc. 719, 76th Cong., 3d sess.). For further details see page 2005 of Annual Report for 1962. Federal cost of completed project was $2,162,155. Recreation facilities for completed project cost $68,446 (Corps funds), raising total project costs to $2,230,601.

Local cooperation. Fully complied with. Ordinary operations and maintenance by local interests for calendar year 1968 were performed at a cost of $41,150. Total expenditures to date by local interests are $659,005. 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 regulations of reservoir and care of recreation area.

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. For dates of minor improvements, relocations, and extraordinary maintenance see page 2006 of Annual Report for 1962.

12. PORTNEUF RIVER, LAVA HOT SPRINGS, IDAHO

Location. On Portneuf River, through village of Lava Hot Springs approximately 30 miles south of Pocatello, Idaho.

Existing project. Plan of improvement provides for an enlarged concrete channel and levee through the village of Lava Hot Springs for a distance of 3,000 feet. Project was adopted by Chief of Engineers in August 1968 under authority of section 205 of the 1948 Flood Control Act, as amended. Estimated cost (July 1969) is $747,000 Federal, and $13,800 non-Federal for rights-of-way and relocations.

Local cooperation. Section 3, Flood Control At of June 22, 1936, as amended, applies. A letter of intent to meet requirements of local cooperation has been received from Lava Hot Springs officials.

Operations and results during the fiscal year. Field surveys and preliminary explorations were completed. Preparation of plans and specifications was begun.

Condition at end of fiscal year. Preparation of plans and specifications is 20 percent complete. No construction has been done.

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

Location. At three areas along Portneuf River and along entire length of its main tributary, Marsh Creek, all in Southeastern Idaho.

Existing project. Original authorization provides for channel straightening and improvement, removal of obstructions, and construction of new levees in Blackrock area, in and adjacent to city of Pocatello and in vicinity of Inkom, all on Portneuf River. Plan also provides for channel improvement along lower 39 miles of Marsh Creek. Project was conditionally authorized under Columbia River Basin plan by 1950 Flood Control Act subject to economic justification. Justification for Pocatello unit was established in fiscal year 1953. The plan for Pocatello unit, as modified in 1964, provides for a rectangular concrete channel thru city of Pocatello with revetted levee at either end where development is less extensive. Estimated cost of Pocatello unit (December 1968) is $6,453,000 Federal and $481,700 non-Federal for rights-of-way, two new bridges and relocation of utilities. Inkom-Marsh Creek unit is considered inactive and excluded from foregoing estimate. Estimated cost of this unit (July 1964) is $750,000 Federal and $38,000 non-Federal for lands and damages and relocations.

Local cooperation. Fully complied with.

Operations and results during the fiscal year. Construction of Pocatello Unit was completed.

Condition at end of fiscal year. Construction of Pocatello Unit started July 1966, and this unit was completed in November 1968 except for trees and shrubs to be furnished by the Government, for which a supply contract has been awarded. Local interests in other areas have expressed little desire to participate in plan of improvement of inactive Inkom-Marsh Creek Unit, and economic justification has not been established.

14. RIRIE RESERVOIR, WILLOW CREEK, 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. Provides for a rockfill dam (about 840 feet long at the crest and 184 feet high above foundation) and downstream channel construction. Spillway will be an unlined channel in right abutment. Outlet works will be a reinforced concrete conduit at the toe of left abutment. Reservoir 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 8.2 miles long and have a capacity of 900 cubic feet per second. Existing project was authorized by 1962 Flood Control Act (H. Doc. 562, 87th Cong., 2d sess.). Estimated Federal cost of new work (July 1969) is $16,000,000 Corps of Engineers funds, and $30,000 for value of public-owned lands.

Local cooperation. Fully complied with.

Operations and results during the fiscal year. Design memorandum for relocation and improvement of Bonneville County road was completed and approved. Preparation of design memoranda for main dam and flood channel was continued.

Condition at end of fiscal year. Approximately 37 percent of necessary real estate has been acquired. Work is progressing on following specific design memoranda: Main Dam, Diversion Facilities and Outlet Works, Flood Channel, and Reservoir Master Plan. Construction was started in June 1967. Project has been temporarily suspended due to funding restrictions. Entire project is about 14 percent complete.

15. STUART GULCH RESERVOIR, BOISE, IDAHO

Location. On Stuart Gulch, near and north of Boise, Ada County, Idaho, in Sections 21 and 28, Township 4 North, Range 2 East, Boise Meridian.

Existing project. Dam will be earth embankment with central filter zone and a downstream drainage blanket. Random fill portions of embankment consist of sands and silty sands. Upstream and downstream faces and adjacent abutment slopes will be protected against erosion by gravel blanket two feet thick. Dam will be 54 feet high and 1,050 feet long at crest. At spillway crest, reservoir will have surface area of 39 acres and storage capacity of 500 acre-feet. An ungated spillway in left abutment with a capacity of 18,700 cubic feet per second has a 150-foot-wide channel and concrete-lined chute. An ungated 100-cubic-foot-per-second outlet works under embankment with 30-inch diameter concrete conduit is provided. Project will provide flood control for city of Boise, Idaho.

Project was authorized under Flood Control Act of 1966 (H. Doc. 486, 89th Cong., 2d sess.). Estimated Federal cost (July 1969) is $977,000. Estimated non-Federal cost for land is $86,000.

Local cooperation. Local interests are required to provide lands, easements, rights-of-way, and relocations required for the project; hold and save the United States free from damages incident to construction; and to operate and maintain the project upon completion.

Operations and results during the fiscal year. Preparation of hydrology design memorandum and general design memorandum continued throughout the year.

Condition at end of fiscal year. Hydrology design memorandum is 94 percent complete, and general design memorandum is 90 percent complete.

16. TUCANNON RIVER, CAMP WOOTEN, WASH.

Location. On upper Tucannon River within Camp Wooten recreational area. Camp is located approximately 21 miles upstream from Marengo, Wash., in Columbia County.

Existing project. Provides for channel renovation and 1,900 feet of levee construction, of which 900 feet is revetted. Improvements are designed to protect the camp from flows up to 4,500 cubic feet per second. Project was adopted by Chief of Engineers January 5, 1968 under section 205, 1948 Flood Control Act, as amended. Estimated Federal cost (September 1968) is $45,700. Non-Federal cost is estimated to be $500 for right-of-way.

Local cooperation. Section 3, Flood Control Act of June 22, 1936, as amended, applies. A letter of intent to meet requirements of local cooperation has been received from Columbia County commissioners.

Operations and results during the fiscal year. Plans and specifications were essentially completed.

Condition at end of fiscal year. Right-of-way remains to be acquired. In order to avoid interfering with spawning fish, further contacts are to be made with fishery agencies to arrange for an adequate construction period in fall of 1969.

17. 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-D for inspections made during fiscal year.)

Fiscal year costs were $17,190. Total costs to June 30, 1969 were $106,282.

18. SCHEDULING FLOOD CONTROL RESERVOIR OPERATIONS

Coordination of functional regulation of non-Corps reservoirs and associated studies 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. Formal agreements in connection with operation of reservoirs provided authority for functional coordination of Jackson Lake, Arrowrock Reservoir, and Lake Lowell for flood control. Regulation of American Falls, Owyhee, Magic, Mackay, Cascade, and Deadwood Reservoirs, Idaho, for flood control was coordinated under informal arrangements. Provisions of Federal Power Commission's license to Idaho Power Company were the basis for coordinating functional regulation of Brownlee, Oxbow, and Hells Canyon Reservoirs. Reservoir Regulation Manual for Idaho Power Company projects was revised. A petition by Fish and Game Committee of Lewiston, Idaho Chamber of Commerce was reviewed and commented upon. In coordination with Bureau of Reclamation, a formal plan of operation under Section 7, Flood Control Act of 1944, and a Preliminary Report on Reservoir Regulations for Bully Creek, Warm Springs, and Agency Valley Reservoirs in Malheur River Basin were prepared and reviewed. A formal plan of operation and preliminary report for Phillips Lake behind Mason Dam on Powder River, Oregon, were prepared. Fiscal year costs were $16,616.

19. OTHER AUTHORIZED FLOOD CONTROL PROJECTS

See table 39-E.

20. FLOOD CONTROL WORKS UNDER SPECIAL AUTHORIZATION

Flood control activities pursuant to Section 205, P.L. 858, 80th Congress, as amended (preauthorization)

See table 39-F for flood control work under special authorization.

Emergency flood control activities—repair and flood fighting and rescue work (P.L. 99, 84th Cong., and antecedent legislation)

Federal cost for fiscal year was $7,897 for advance preparation, $1,093,754 for flood emergency operations, and $42,163 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.)

(See table 39-G for flood control work under special authorization.)

MULTIPLE-PURPOSE PROJECTS INCLUDING POWER

21. DWORSHAK RESERVOIR, NORTH FORK CLEARWATER RIVER, 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. Project as authorized will provide a straight concrete gravity dam 630 feet in effective height at maximum pool elevation 1,600 and 3,300 feet long at crest. Dam will create a reservoir with a gross storage capacity of 3,453,000 acre-feet, of which 2 million acre-feet will be effective for both local and regional flood control, and for at-site and downstream power generation. In addition, reservoir pool, 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. No significant runs of salmon occur in North Fork Clearwater River; however, considerable migrations of steelhead trout are recorded at Washington Water Power Co. dam at Lewiston, Idaho, near mouth of Clearwater River. Fish passage is not feasible so a hatchery has been provided to assure continuance of fish runs. Dworshak reservoir is 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. Planning was authorized by 1958 Flood Control Act in accordance with plan presented in Senate Document 51, 84th Cong., 1st sess. Project authorized for construction by Public Law 87-874. Initial appropriation for construction was by Public Works Appropriation Act of 1962. Estimated total cost for new work (July 1969) is $262,740,000, consisting of $260,000,000 Corps funds, and $2,740,000 for value of public-domain lands.

Local cooperation. None required.

Operations and results during the fiscal year. Main contract for construction of dam continued. Work progressed under contracts for construction of steelhead fish hatchery facilities and for Dent Bridge approach road. A specific design memorandum was approved for Grandad Bridge. Contracts were awarded for fish hatchery facilities consisting of fish feeders, fish crowders, and operators' quarters. Sale continued of reservoir area marketable timber owned jointly by Corps of Engineers, U.S. Forest Service, and Bureau of Land Management. A contract with a school district was executed under authority of Public Law 90-483, section 204, to provide schools in project area with Federal aid.

Condition at end of fiscal year. A Reservoir Master Plan is being prepared. Preparation of specific design memoranda is in progress for buildings and grounds at damsite, for development of recreational sites, for power access road, and for upper reservoir roads. Invitations for bids are scheduled for fiscal year 1970 for construction of Dent Bridge. Approximately 47 percent of number of required acres of project land has been acquired. Dam is estimated to be about 34 percent complete, and fish and wildlife facilities about 32 percent complete. Construction of project started in April 1963, and project is estimated to be 38 percent complete.

22. ICE HARBOR LOCK AND DAM, SNAKE RIVER, WASHINGTON

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. A dam, powerplant, navigation lock, fish ladders, appurtenant facilities, and relocation of railroads. Improvement provides for navigation, hydroelectric power generation and incidental irrigation. Dam is designed for a normal pool at elevation 440 mean sea level. Normal pool creates a reservoir extending upstream about 31.9 miles, providing slackwater to Lower Monumental lock and dam site. Structure is about 2,700 feet long. Beginning at south end, project consists of a concrete non-overflow section, a concrete powerhouse, a spillway dam, a concrete non-overflow section, a navigation lock, and an earth and rock filled embankment at north abutment. Fish passing facilities, including two ladders, are provided.

Powerplant has an initial installation of three 90,000 kilowatt units, with provision for three additional units, an ultimate total of six units. 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 52.9 feet high which provide capacity to pass spillway 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 a single lift type and has clear plan dimensions of 86 by 675 feet. A navigation channel 250 feet wide and minimum depth of 15 feet is provided from mouth of Snake River to dam. Existing project was authorized by 1945 River and Harbor Act (P.L. 14, 79th Congress, 1st sess.). Estimated costs for new work (July 1969) is $156,091,800, consisting of $155,900,000 Corps of Engineers funds, $87,000 for Coast Guard navigation aids, $22,300 Federal funds for value of public-domain lands, and $82,500 non-Federal funds contributed for artificial spawning channel. Construction of additional recreational facilities for completed project is estimated to cost $1,350,000 Corps of Engineers funds, raising total project cost to $157,448,800.

Local cooperation. None required.

Operations and results during the fiscal year. New work: Deferred construction was continued on Union Pacific Railroad. Preconstruction planning for additional generating units was continued.

Code 710 Activity: Planning for development of recreation facilities at Charbonneau Park was continued. A revised design memorandum was submitted that in addition to marina facilities included park development.

Operation and maintenance: During fiscal year normal operation of navigation lock and powerplant continued, and 2,218,937 megawatt hours of electrical energy were delivered to Bonneville Power Administration, the marketing agency.

Condition at end of fiscal year. Contract for initial construction is complete. Project was placed on a permanent operating basis January 1962, and reservoir pool was raised to normal elevation 440 April 1962. Navigation lock was opened to normal traffic in October 1962. Land acquisition is complete. Basic recreation facilities constructed with regular project funds are essentially complete. Construction started in December 1955 and initial project is over 99 percent complete. Preliminary design of 3 additional generating units has been accomplished.

23. JOHN DAY LOCK AND DAM, COLUMBIA RIVER, OREGON & WASHINGTON

Location. Site is on Columbia River, about 3 miles downstream from mouth of John Day River and about 215 miles above mouth of Columbia River.

Existing project. A dam, powerplant, navigation lock, fish ladder, and appurtenant facilities with a slackwater pool about 75 miles long extending to McNary lock and dam. Included is relocation of railroads, highways, utilities, and communities affected by the impoundment. The project as originally authorized would have provided 2,000,000 acre-feet of flood control storage. As modified the project provides 500,000 acre-feet of flood control storage between minimum pool elevation of 257 and a maximum elevation of 268. Powerhouse provides for 20 generating units of 135,000 kilowatts each. Initial installation was revised upward to provide for 16 units of 135,000 each for a total of 2,160,000 kilowatts. A detailed description of project as authorized and modified is on pages 1992 and 1993 of Annual Report for 1962. Estimated Federal cost of new work (July 1969) is $461,633,000, consisting of $461,000,000 Corps of Engineers funds, $333,000 for Coast Guard navigation aids, and $300,000 for value of public-owned land.

Local cooperation. None required.

Operations and results during the fiscal year. New work: With termination of temporary diversion through the ten north skeleton units of the powerhouse in April 1968, the contractor began to unwater these units in July 1968 preparatory to completing the remaining concrete work and the embedding of turbine parts. Rotating turbine parts were being placed in units 11 and 12, and satisfactory progress was being made in units 13 through 16 in meeting the installation schedule. All concrete placement in units 17-20 inclusive was completed. Eight units of 135,000 kilowatts each were placed in commercial operations during the fiscal year. Construction at recreation sites initiated ahead of pool raising was completed. Preparation of plans and specifications on remaining work continues.

Operation and maintenance: Activities during the 1969 fiscal year, utilizing O & M General funds, increased as additional generating units were placed on the line, which were as follows: Unit No. 1, 16 July 1968; Unit No. 2, 29 August 1968; Unit No. 3, 15 October 1968; Unit No. 4, 16 November 1968; Unit No. 5, 22 January 1969; Unit No. 6, 19 February 1969; Unit No. 7, 26 March 1969; Unit No. 8, 12 May 1969. During the fiscal year 1969 these units produced a total of 4,690,410,000 KWH of electric energy.

The navigation locks were closed from 2 January through 15 April 1968. During that time petroleum products totaling 101,138 tons were passed around the locks by use of pipeline facilities. Traffic through the locks during the period 16 April - 31 December 1968 totaled 1,182,027 tons for a total during the year of 1,283,165 tons. There were 2,334 various types of craft, including 171 pleasure boats, passed in a total of 625 lockages during calendar year 1968.

At the two fish ladders 892,872 fish of all species were counted during calendar year 1968, of which 480,991 were of the salmon variety.

Fiscal year expenditures for O & M activities totaled $941,953.

Condition at end of fiscal year. Eight 135,000 kilowatt generating units have been placed in operation during the year, producing commercial power. These units add 1,080,000 kilowatts of generating capability to the Federal Power System in the Pacific Northwest. Work continues on the installation of turbines, generators, and accessory equipment and completing the powerhouse. Contracts on recreation facilities were completed. Work remaining to be completed includes such items as hatcheries for the mitigation of spawning areas in Lake Umatilla, recreation facilities, and lock guide wall extension. Miscellaneous relocations including towns, schools, cemeteries, and utilities, are 97 percent complete. The dam, lock, powerhouse, and fish facilities are 87 percent complete. Construction of project began in July 1958. During April 1968 project was placed on a permanent operating basis - pool raised to normal operating elevation, fish ladders became operative, and first traffic passed through navigation lock. Electric power went on line July 16, 1968. The entire project is estimated to be 91 percent complete.

24. LITTLE GOOSE LOCK AND DAM, SNAKE RIVER, WASHINGTON

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

Existing project. Provides for a dam, powerplant, navigation lock, and appurtenant facilities. Improvements provide navigation, hydroelectric power generation, recreation, and incidental irrigation. Dam is designed for a normal pool at elevation 638 mean sea level. Normal pool will create a reservoir extending upstream about 37.2 miles and providing slack water to Lower Granite lock and dam site. Dam structure is approximately 2,660 feet long 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 is being constructed for three 135,000 kilowatt generating units to be installed initially, with provisions for three additional 135,000 kilowatt units for an ultimate installed capacity of 810,000 kilowatts. Spillway dam will provide capacity to pass a design flood of 850,000 cubic feet per second. Navigation lock will be single lift type and have clear plan dimensions of 86 by 675 feet and provide a minimum depth of 15 feet over lock sills. Relocations along the impoundment include 36 miles of Camas Prairie Railroad, 7.2 miles of county roads, 2.8 miles of state highways, and Central Ferry Bridge. Existing project was authorized by 1945 River and Harbor Act (P.L. 14, 79th Cong., 1st sess.). Estimated total cost for new work (July 1969) is $152,090,000, consisting of $152,000,000 Corps of Engineers funds, $87,000 for Coast Guard navigation aids, and $3,000 for value of public-owned land.

Local cooperation. None required.

Operations and results during the fiscal year. Construction continued throughout fiscal year on $71,956,573 main dam contract for powerhouse, eight-bay spillway, navigation lock, fish passing facilities, concrete nonoverflow dams and north abutment embankment. Concrete work consisted of placement in powerhouse scroll cases, powerhouse walls, fish ladder, navigation lock filling system and deck parapets. Spillway gates, upper and lower lock gates, upper and lower bascule bridges, powerhouse intake gates and trashracks, and associated machinery were erected, installed, and painted. Other miscellaneous items of work consisted of completion of the powerhouse roof structure, downstream navigation lock approach channel, temporary end wall of the powerhouse, and removal of the first-step cofferdam.

The $2,600,000 powerhouse installation contract continued throughout the year with work principally on erection of three 212,400 HP hydraulic turbines, switchgear, piping, electrical wiring, architectural features, and three 850-cubic-foot-per-second turbine driven fishway pumps.

Various construction contracts were awarded and consisted of relocation of Camas Prairie Railroad from Central Ferry to Purrington, $795,342; second stage contract Riparia to Central Ferry, $883,850; railroad overpass structure, Whitman County, $157,700; Washington state Highway No. 127, Garfield County, $981,990; and railroad section facilities at Central ferry and Almota, $288,883. A $2,998,867 contract was awarded through agreement with Washington State Highway Department for construction of Central Ferry Bridge on State Highway No. 127 (formerly No. 295).

Design studies are nearing completion on reservoir clearing, navigation lock floating bulkhead, floating guardwall, and relocation of Garfield County Roads Nos. 303 and 375 is being advertised for award in near future.

Condition at end of fiscal year. Concrete placing for all structures is substantially complete. First-step cofferdam has been removed and preparatory work is underway for construction of second-step cofferdam to permit diversion through skeleton units of powerhouse for placing north shore abutment embankment section. Approximately 5 percent of work remains to complete $71,956,573 main dam contract. Work consists principally of completing installation and painting gates and operating machinery, completing north abutment fill section, raising pool, placing fish facilities in operation, interchanging powerhouse intake gates and concrete stoplogs between the operating and skeleton units.

The $2,600,000 powerhouse installation contract is approximately 35 percent complete, with major items of work being on erection and installation of rotating parts for three 212,400 HP turbines, three 830-cubic-foot-per-second fish attraction water pumps, architectural features, and miscellaneous electrical and mechanical equipment.

First section of Camas Prairie Railroad relocation from Riparia to Central Ferry is complete and second stage of this work has now been awarded. Remaining portions of this railroad relocation have been awarded with exception of the tracklaying and track removal. Remaining items of work for completion of this project are scheduled for award early in next fiscal year. Project completion is scheduled for June 1970 for beneficial use of navigation and power production. Construction began June 1963 and entire project is estimated to be 84 percent complete.

25. LOWER GRANITE LOCK AND DAM, SNAKE RIVER, WASHINGTON

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

Existing project. Provides for a dam, powerplant, navigation lock and appurtenant facilities, and required backwater levees near head of pool at Lewiston, Idaho, and Clarkston, Wash., areas Benefits afforded by project will include slack water navigation, power generation, recreation, and incidental irrigation. Normal pool elevation of 738 feet mean sea level will create a reservoir extending upstream about 36 miles and provide slack water navigation in Lewiston-Clarkston area. Dam structure will be about 3,200 feet long. It will consist of a powerhouse, spillway dam, navigation lock, necessary nonoverflow sections, and fish passing facilities. Powerplant will be constructed for three 135,000 kilowatt units to be installed initially with provisions for three additional similar units. Spillway will provide capacity to pass a design flood of 850,000 cubic feet per second. Navigation lock will be single lift type and have clear plan dimensions of 86 by 675 feet and provide a minimum depth of 15 feet over lock sills. Backwater levees will be about 10 miles long in Lewiston-Clarkston area. Existing project was authorized by 1945 River and Harbor Act (P.L. 14, 79th Cong., 1st sess.). Construction funds were provided by P.L. 89-16. Estimated costs for new work (July 1969) is $216,032,000, consisting of $216,000,000 Corps of Engineers funds, $30,000 for Coast Guard navigation aids, and $2,000 for value of public-owned lands.

Local cooperation. None required.

Operations and results during the fiscal year. Further acquisition of land continued. Work progressed under a $4,606,000 contract awarded during fiscal year for relocation of Camas Prairie Railroad between Schultz Bar and Wawawai. Work began on Camas Prairie Railroad section facilities. Earnings under supply contracts for three turbines, transformers, and governors were continued. Preparation of plans and specifications for main dam contract was continued.

Condition at end of fiscal year. Acquisition of land is estimated to be 47 percent complete. A 7½ million dollar cofferdam was completed in December 1966 and awaits start of main dam construction. Main dam contract, estimated at $94,742,000, is scheduled for award in February 1970. South shore access road has been completed except for a short section at damsite to be constructed as part of main dam contract. Relocation of Camas Prairie Railroad between Schultz Bar and Wawawai is approximately 68 percent complete, and design is continuing for relocation of remaining portion from Wawawai to Lewiston. Supply contracts for three turbines costing $4,390,000, three power transformers costing $853,000, and three turbine governors costing $315,000 are 82 percent, 5 percent, and 54 percent complete, respectively. Preparation of specific design memoranda is continuing for the following: North Lewiston levee, West Lewiston levee, East Lewiston levee, Clarkston levee, north shore access road, utility relocations, and road relocations. Construction (cofferdam) started in July 1965. Entire project, including land acquisition, is estimated to be 15 percent complete.

26. LOWER MONUMENTAL LOCK AND DAM, SNAKE RIVER, WASHINGTON

Location. On Snake River at head of Ice Harbor pool, about 45 miles northeast of Pasco, Wash.

Existing project. Provides for construction of a dam, powerplant, navigation lock, relocation of railroads and highways above proposed pool level at elevation 540 feet mean sea level, and appurtenant facilities. The impoundment extends about 30 miles upstream to the site of Little Goose lock and dam. The dam, located at upper end of pool created by Ice Harbor dam, will raise water surface about 100 feet, and is concrete gravity with earthfill and rockfill abutments 135 feet high (above streambed) and 3,800 feet long (including abutments, spillway, navigation lock and powerhouse). Fish ladders will be provided, one at each end of the dam. Powerhouse will have three 135,000-kilowatt units installed initially, and a substructure for three additional units, for an ultimate total of 810,000 kilowatts. Spillway will be 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 60.5 feet high. Deck is at elevation 553 feet and provides a service road and track for a gantry crane. Navigation locks is single lift type, with lock chamber 86 by 675 feet, providing a minimum depth of 15 feet over lock sills. Reservoir capacity at elevation 540 is 376,000 acre-feet. Existing project was authorized by 1945 River and Harbor Act (P.L. 14, 79th Cong., 1st sess.). Estimated total cost for new work (July 1969) is $177,102,000 including $177 million Corps funds, $87,000 Coast Guard funds for navigation aids, and $15,000 for value of public-domain lands.

Local cooperation. None required.

Operations and results during the fiscal year. New work, hired labor: Engineering and design work continued.

New work, contract: Relocations of highways and railroads were completed, except for deferred construction which covers a period of five years. Construction of Marmes Rockshelter protective works was completed on schedule, and the creation of the reservoir began on February 21, 1969. Prior to raising pool, all essential clearing below pool level was accomplished in the reservoir area, and the first-stage development of recreation and public-use areas was initiated. Maximum operating pool elevation 540 was reached February 26. Upstream navigation floating guidewall was completed and installed. Assembly of turbines, generators, and associated mechanical and electrical equipment continued. Permanent fish ladder became operative on February 27, and the first vessel passed through the lock on April 15. The first generator went on-the-line May 28.

Operation and maintenance: Routine operation and maintenance expenditures, payable from Operation and Maintenance, General funds, began on May 1, 1969 following placing navigation lock in operation. Approximately 96,606 megawatt hours of electrical energy were delivered to Bonneville Power Administration, the marketing agency.

Condition at end of fiscal year. Final design work is about 98 percent complete. Construction started in fiscal year 1961. The entire project is about 92 percent complete. Completed items include majority of land acquisition, relocations (except deferred construction), dam, spillway, lock, fish ladders, Marmes Rockshelter protective works, upstream floating guidewall, and the first of three generators. Work continued on powerhouse and installation of mechanical and electrical equipment. The first-stage development of recreation and public-use areas is 98 percent complete. Reservoir clearing is substantially complete except for removal of the piers on the Snake River bridge at Riparia.

27. McNARY LOCK AND DAM, COLUMBIA RIVER, OREGON & WASHINGTON

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

Existing project. A dam, powerplant with 14-power-unit generating installation, navigation lock, fishways, attendant buildings and grounds, levees, drains, pumping plants, incidental irrigation, and modification of railroad bridges over Columbia and Snake Rivers in order to eliminate hazards to navigation. For more detailed description see page 1990 of Annual Report for 1962. Existing project was authorized by 1945 River and Harbor Act (H. Doc. 704, 75th Cong., 3d sess.). Estimated total cost for new work (July 1969) is $296,212,000, consisting of $297,000,000 Corps of Engineers funds, a net reduction of $851,000 for cost and property transferred from project, and $63,000 for Coast Guard navigation aids. Construction of additional recreation facilities for completed project is estimated to cost $1,720,000, raising total project cost to $297,932,000.

Local cooperation. None required.

Operations and results during the fiscal year. New work: Work was continued under an agreement with NP Railway Co. which provides that they design and reconstruct their Snake River Bridge No. 3. Alteration of bridge substructure was begun during fiscal year.

Draft of an agreement with Union Pacific Railroad for them to prepare preliminary plans, cost estimates, and cost apportionment for modification of their Columbia River bridge was disapproved because of stipulated life of existing bridge. Negotiations with railroad company were resumed to consummate an agreement providing a lesser remaining life.

Code 710 activity: Planning was continued for further development of recreation facilities in reservoir area and for acquisition of additional land at Cold Springs. Design for Cold Springs area is complete.

Operation and maintenance: Normal operation and maintenance of project continued. Approximately 6,495,404 megawatt hours of electric energy were delivered to Bonneville Power Administration, the marketing agency. Installation of equipment at McNary powerhouse for remote control of lower Snake River dams continued in conjunction with Ice Harbor now on remote control. A contract for $141,000 was completed for construction of an additional pumphouse at Pasco Levee 12-1. A contract for $38,308 was awarded for resurfacing project roads. Electrical failure of generating unit No. 13 resulted in an abnormal maintenance cost of $52,800.

Condition at end of fiscal year. Construction of existing project started May 1947 and is 97 percent complete (June 1969). Project was placed on a permanent operating basis and pool raised to normal operating elevation 340 in December 1953. Except for maintenance interruptions, all 14 power units have been in commercial operation since February 1957. Modification to two railroad bridges over Columbia and Snake Rivers remains to complete project.

Northern Pacific Railway Co. is progressing with reconstruction of its Snake River Bridge No. 3, and has awarded a contract under which work is progressing on bridge substructure. Modification involves funding by two projects—McNary Lock and Dam and Lower Monumental Lock and Dam. When Northern Pacific Snake River Branch of the railway was condemned in conjunction with Lower Monumental Lock and Dam project, traffic was subsequently rerouted over Northern Pacific Snake River Bridge No. 3. In order to provide for increased traffic, load bearing capacity of bridge is being upgraded concurrently with navigation modification.

Negotiations are in progress with Union Pacific Railroad Co. to enter into an agreement whereby the railroad company would design, modify, and supervise work on its Columbia River bridge. Progress, however, has been slow due to difficulties in resolving differences of opinion regarding determination of remaining life of existing bridge.

28. 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 Wyoming, 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, page 1981 for 1962, page 1991 for 1915, page 2246 for 1903, and page 1986 for 1906.

Existing project. River and Harbor Act of 1945 (P.L. 14, 79th Cong., 1st sess.) authorized construction of such dams as are necessary and open channel improvements for purposes of providing slackwater navigation and irrigation between mouth of Snake River and Lewiston, Idaho. This authorization modifies 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, are part of existing project.

Improvements included in existing project and estimated Corps costs are Ice Harbor Lock and Dam, river mile 9.7, $157,250,000, including $1,350,000 for recreation facilities on completed project; Little Goose Lock and Dam, $152,000,000; Lower Granite Lock and Dam, $216,000,000; Lower Monumental Lock and Dam, $177,000,000; and open-river improvement, Lewiston to Johnson Bar Landing, $34,613. Total estimated cost is $702,284,613.

Local cooperation. None required.

Terminal facilities. Six privately owned grain facilities on Snake River. Four of these are on open river and limited in use for waterway shipping due to shallow channel depths. Two are on Ice Harbor pool. There are three privately owned terminals below Ice Harbor Dam - one grain and two petroleum. In addition, there are four publicly owned marinas and 17 small boat launching ramps, all open to public use. Facilities are adequate until slackwater navigation is available and shipping volume increases following completion of dams now under construction above Ice Harbor.

Operations and results during the fiscal year. See individual reports for Lower Granite, Little Goose, Lower Monumental and Ice Harbor locks and dams. On Snake River from Lewiston, Idaho, to Johnson Bar Landing reconnaissance and condition surveys were conducted. Navigation aids were repaired and channel was renovated at Cottonwood Rapids.

Condition at end of fiscal year. Costs of existing project were $454,522,844 for new work and $5,697,767 for maintenance, a total of $457,220,611 regular funds. Additional cost of existing project was $82,500 for new work from contributed funds for artificial spawning channel at Ice Harbor Lock and Dam project. (See table 39-H for summary of status of work on existing and previous project authorization.)

29. OTHER AUTHORIZED MULTIPLE PURPOSE PROJECTS

See Table 39-I.

GENERAL INVESTIGATIONS

30. SURVEYS

Total cost of surveys during fiscal year was $219,173. Of that amount $976 was for navigation studies, $189,361 for flood control studies, and $28,836 for cooperative studies with Soil Conservation Service and Bureau of Reclamation.

31. COLLECTION AND STUDY OF BASIC DATA

During fiscal year, flood hazard data was provided to agencies from states of Idaho, Oregon and Washington, and to numerous Federal agencies. Private organizations were also provided flood hazard information for locations where data were readily available.

Flood plain information reports were completed for Walla Walla River tributaries in Walla Walla County, Washington; South Fork of Palouse River and Missouri Flat Creek in Pullman, Washington; and Payette River in vicinity of Payette, Idaho. Flood plain information report of Canyon Creek at Canyon City and John Day, Oregon was complete at end of fiscal year but will not be presented to local people until first quarter of fiscal year 1970. Flood plain information reports for Portneuf River at Pocatello, Idaho, and Umatilla River in vicinity of Pendleton, Oregon, are 60 to 70 percent complete.

Total fiscal year costs were $98,176. (See table 39-J on completed flood plain studies.)

32. RESEARCH AND DEVELOPMENT

Hydrologic investigations to improve forecasting procedures with respect to floods and seasonal runoff volumes were continued. Studies were made of cause of floods and of flood frequencies for various size areas. Fiscal year cost of these studies was $5,206.

Engineering studies consisting of finite element analysis of gravity lock walls were also performed during fiscal year at cost of $1,639.

Combined fiscal year costs of all research and development were $6,835.

 
Table 39-A
Cost and Financial Statement
See
Section
In Text		 Project Funding FY 65 FY 66 FY 67 FY 68 FY 69 Total to
June 30, 1969
2. Bear Creek, Kendrick, Idaho New Work
Approp.
 $4,541 $9,400 $850 $13,700 $65,000 $93,491
Cost
 3,763 1,458 9,479 5,183 20,762 40,645
3. Blackfoot Reservoir, Blackfoot River, Idaho New Work
Approp.
 46,000 24,000 10,000 12,316 7,000 99,316
Cost
 25,978 38,230 11,428 5,849 14,015 93,300
4. Catherine Creek Reservoir, Oregon New Work
Approp.
 — — — — 96,000 96,000
Cost
 — — — — 89,589 89,589
5. Columbia River Basin Local Flood Protection Projects New Work
Approp.
 — — — — — 73,1711
Cost
 — — — — — 73,1711
6. Cottonwood Creek Reservoir, Boise, Idaho New Work
Approp.
 — — — 75,000 87,000 162,000
Cost
 — — — 55,498 95,116 150,614
7. John Day River, Columbia River Basin , Oregon New Work
Approp.
 5,000 20,000 50,000 — 200,000 333,232
Cost
 1,020 18,113 21,987 24,058 60,523 183,9332
8. Lapwai Creek, Culdesac, Idaho New Work
Approp.
 4,800 13,000 — 3,500 12,500 33,800
Cost
 3,043 1,789 12,432 3,324 3,322 23,910
9. Lucky Peak Reservoir, Boise River, Idaho New Work
Approp.
 41,726 —3,550 16,000 12,800 30,000 19,380,500 3
Cost
 132,216 7,713 15,313 9,006 13,279 19,351,575 4
Maintenance
Approp.
 97,000 123,100 129,000 213,000 118,100 1,401,840
Cost
 81,881 115,486 125,374 235,884 109,059 1,391,077
10. Lyman Creek, Idaho New Work
Approp.
 — 14,500 127,000 — — 163,100
Cost
 3,276 1,406 12,795 35,336 5,840 76,841
11. Mill Creek Reservoir, Washington New Work
Approp.
 4,000 —78 — — — 2,230,601 5,6
Cost
 5,365 — — — — 2,230,601 5,6
Maint.
Approp.
 44,200 30,600 108,500 49,800 49,300 1,026,470
Cost
 33,195 35,948 113,103 49,261 48,132 1,022,990
12. Portneuf River, Lava Hot Springs, Idaho New Work
Approp.
 — — 4,000 50,250 — 89,250
Cost
 8,620 12,875 10,730 3,703 33,234 73,410
13. Portneuf River and Marsh Creek, Columbia River Basin, Idaho (Federal Funds) New Work
Approp.
 120,000 430,000 2,300,000 2,670,000 797,000 6,455,276
Cost
 107,182 181,046 2,553,905 2,117,680 1,357,113 6,448,330
(Contributed Funds) New Work
Approp.
 — 36,800 — — — 36,800
Cost
 — — — 19,366 17,434 36,800
14. Ririe Reservoir, Willow Creek, Idaho New Work
Approp.
 240,061 258,800 350,000 750,000 590,000 2,650,038
Cost
 242,767 351,087 316,509 657,581 374,807 2,282,429
15. Stuart Gulch Reservoir, Boise, Idaho New Work
Approp.
 — — — 45,000 63,000 108,000
Cost
 — — — 27,916 59,577 87,494
16. Tucannon River, Camp Wooten, Wash. New Work
Approp.
 — 7,500 — 7,200 36,000 50,700
Cost
 — 2,216 5,011 966 3,504 11,697
21. Dworshak Reservoir, North Fork Clearwater River, Idaho New Work
Approp.
 5,277,000 9,797,200 20,026,000 25,200,000 38,500,000 106,761,200
Cost
 4,020,437 10,499,948 20,518,035 24,223,607 32,178,113 99,164,604
22. Ice Harbor Lock and Dam, Snake River, Washington New Work
Approp.
 2,490,000 472,778 910,000 902,200 400,000 129,647,1517
Cost
 2,038,326 962,238 687,819 1,004,806 435,742 129,476,0398
Maint.
Approp.
 1,252,800 912,000 825,000 555,600 657,000 5,569,000
Cost
 1,085,880 898,710 860,185 661,329 678,833 5,530,751
23. John Day Lock and Dam, Oregon and Washington New Work
Approp.
 75,190,000 72,800,000 42.617,000 40,800,000 23,400,000 423,619,900
Cost
 74,146,532 74,687,000 43,161,336 41,001,484 22,219,735/TD> 419,981,743
Maint.
Approp.
 — — — 78,000 951,000 1,029,000
Cost
 — — — 75,983 941,953 1,017,936
24. Little Goose Lock and Dam, Snake River, Washington New Work
Approp.
 9,625,000 18,100,000 36,000,000 33,050,000 21,900,000 129,430,100
Cost
 6,044,991 21,330,324 35,922,509 31,963,866 21,045,228 126,924,535
25. Lower Granite Lock and Dam, Snake River, Washington New Work
Approp.
 760,000 10,330,000 10,589,000 876,000 17,900,000 42,629,823
Cost
 864,949 10,143,862 5,883,552 4,895,961 8,377,902 32,159,077
26. Lower Monumental Lock and Dam, Snake River, Washington New Work
Approp.
 21,450,184 29,924,800 23,400,000 20,686,500 14,300,000 162,989,999
Cost
 16,904,556 29,713,145 25,154,919 23,150,407 14,967,036 162,928,580
Maint.
Approp.
 — — — — 60,500 60,500
Cost
 — — — — 39,413 39,413
27. McNary Lock and Dam, Columbia River, Oregon and Washington New Work
Approp.
 3,274 70,650 95,000 215,000 900,000 287,046,6269
Cost
 4,573 11,602 32,746 25,973 308,017 286,143,11610
Maint.
Approp.
 1,368,500 1,583,000 1,242,000 1,679,500 1,749,000 23,284,170
Cost
 1,361,821 1,346,327 1,439,281 1,617,826 1,858,283 23,167,718
28. Snake River Downstream from Johnson Bar Landing, Ore., Wash., and Idaho New Work
Approp.
 34,325,184 58,827,578 70,899,000 55,514,700 54,500,000 465,131,83611
Cost
 25,852,822 62,149,569 67,648,799 61,015,039 44,825,909 451,922,99411
Maint.
Approp.
 1,256,153 916,404 825,557 572,512 738,301 5,943,67612
Cost
 1,090,232 901,417 862,272 675,411 742,040 5,884,33712
1Comprises the following conditionally authorized projects: Camas Creek, Idaho; Lower Walla Walla River, Wash.; Mill Creek, Wash.; Mud Lake Area, Idaho; Palouse River, Wash.; Payette Valley, Idaho; South Fork Clearwater River, Idaho; Teton River, Idaho; Touchet River, Wash.; and Whitebird Creek, Idaho. Excludes projects reported under "Other Authorized Flood Control Projects:" Blackfoot Area, Snake River, Idaho; Blackfoot River, Idaho; Boise Valley, Idaho; Grande Ronde Valley, Oregon; Heise-Roberts Extension, Idaho; Kendrick, Potlatch River, Idaho; Little Wood River (Carey), Idaho; Malheur River, Oregon; Shelley Area, Snake River, Idaho; Umatilla River (Echo), Oregon; and Weiser River, Idaho. Excludes project reported in detail in an individual report: John Day River Area, Oregon; and Portneuf River and Marsh Creek, Idaho. Does not include amounts for improvements in Portland and Seattle Districts.
2Includes an estimated $71,000 spent for planning on infeasible areas.
3Includes $299,950 allocated under Code 710, Recreation Facilities on Completed Projects.
4Includes $270,325 expended for Code 710, Recreation Facilities on Completed Projects.
5Excludes $80,000 contributed funds.
6Includes $68,446, Code 710, Recreation Facilities on Completed Projects.
7Includes $67,178 allotted under Code 710, Recreation Facilities on Completed Projects.
8Includes $52,400 expended under Code 710, Recreation Facilities on Completed Projects. Excludes $82,500 contributed for artificial spawning channel.
9Includes $281,626 allotted under Code 710, Recreation Facilities on Completed Projects.
10Includes $850,375 net value of cost or property transferred from project. Includes $130,643 expended under Code 710, Recreation Facilities on Completed Projects.
11Includes $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).
12Includes $186,570 for maintenance on previous projects (Pasco to Lewiston).

 
Table 39-B
Other Authorized Navigation Projects
(See Section 1 of Text)
Project For Last Full Report See Annual Report For Cost to 30 June 1969
Construction Operation
and
Maintenance
Columbia River and Tributaries above Celilo Falls to Kennewick, Wash. ¹ 1968 $1,851,195 $1,108,259
Umatilla Harbor, Oregon² 1952 — —
1. Inactive. Project abandoned.
2. Obviated by John Day Project.

 
Table 39-C
Columbia River Basin, Local Flood Protection Projects
(See Section 5 of Text)
Project Estimated
Federal
Cost 		Status June 30, 1969
Appropriated Cost
Blackfoot Area, Snake River, Idaho 1 2 $42,796 $42,796
Blackfoot River, Idaho1 2 391,143 391,143
Boise Valley, Idaho 1
Ada County Unit2
887,000 46,084 46,084
Canyon County Unit4
652,800 10,600 10,600
Camas Creek (feasibility doubtful)4 — 9,080 9,080
Grande Ronde Valley, Oreg.1, 5 8,639,000 102,458 102,458
Heise-Roberts Extension, Idaho1
Henrys Fork Unit5
165,000 27,800 27,800
Snake River Unit
 2 3,400,577 3,375,158
John Day River Area, Oreg.3, 6 792,000 333,232 183,933
Kendrick, Potlatch River, Idaho 1 2 59,941 59,941
Little Wood River Carey, Idaho1, 4 64,000 21,334 21,334
Lower Walla Walla River, Wash. (not feasible) — 4,000 4,000
Malheur River, Oreg.
Vale Unit 1
 2 325,580 325,580
Willow Creek Unit1, 4
 266,000 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, Wash5 914,000 — —
Payette Valley, Idaho5 — 23,178 23,178
Portneuf River and Marsh Creek, Idaho 6
Pocatello Unit³
 2 6,456,032 6,456,032
Inkom-Marsh Creek Unit 4
 750,000 — —
Shelley Area, Snake River, Idaho 1 2 32,335 32,335
South Fork Clearwater River, Idaho 7 — 3,899 3,899
Teton River, Idaho (not feasible) — 10,387 10,387
Touchet River, Wash. (not feasible) — 11,198 11,198
Umatilla River, Echo, Oreg.1, 4 879,000 24,145 24,145
Weiser River, Idaho 1 1,490,000 88,427 88,4278
Whitebird Creek, Idaho7 — 1,896 1,896
Total
   11,447.899 11,266,235
1Reported under "Other Authorized Flood Control Projects."
2Completed Project.
3Economic justification of work proposed has been established in compliance with conditions set forth in Flood Control Act of 1950.
4Inactive for lack of local cooperation.
5Deferred for restudy.
6Reported in detail in an individual report.
7Construction of emergency work at this location has obviated need for project.
8Includes $75,000 spent on feasible Cambridge and Midvale areas.

 
Table 39-D
Inspection of Completed Flood Control Projects
(See Section 17 of Text)
River Basin Number of
Projects		 Month
Inspected		 River Basin Number of
Projects		 Month
Inspected
Blackfoot 1 Oct. 1968 Portneuf 1 Oct. 1968
Boise 1 June 1969 Potlatch 1 June 1969
Clearwater 1 Dec. 1968 Salmon 2 April 1969
Esquatzel Coulee 1 June 1969 Snake 5 Oct. 1968
Little Wood 1 Oct. 1968 Touchet 2 June 1969
Malheur 1 April 1969 Walla Walla 3 June 1969
Palouse 1 June 1969 Yakima 1 June 1969

 
Table 39-E
Other Authorized Flood Control Projects
(See Section 19 of Text)
Project For Last Full Report See Annual Report for: Cost to June 30, 1969
Construction
Arlington, Alkali Canyon, Ore.1 19502 $23,4393
Blackfoot Area, Snake River, Columbia River Basin, Idaho 1958 42,7964
Blackfoot River, Columbia River Basin, Ida. 1965 391,1434
Boise Valley, Columbia River Basin, Ida. 1967  
Ada County Unit
   46,084
Canyon County Unit5
   10,600
Colfax, Palouse River, Washington 1966 3,555,6834, 6
Connell, Washington7 1967 292,7924
Dayton, Touchet River, Washington 1966 380,6174
Grande Ronde Valley, Columbia River Basin, Oregon 8 1958 102,458
Heise-Roberts Area, Snake River, Idaho 1955 1,575,8384
Heise-Roberts Extension, Columbia River Basin, Idaho 1968  
Henrys Fork Unit8
   27,800
Snake River Unit
   3,375,1584, 9
Jackson Hole, Snake River, Wyoming 1967 2,232,6814
Kendrick, Potlatch River, Columbia River Basin, Idaho 1960 59,9414
Lewiston-Clarkston Levees10 1950 —
Little Wood River (Carey), Columbia River Basin, Idaho 5 1960 21,334
Lower Grande Ronde Reservoir, Oregon 1966 —
Malheur Improvement District, Snake River, Oregon 1957 55,8944
Malheur River, Columbia River Basin, Oregon 1961  
Vale Unit
   325,5804
Willow Creek Unit5
   13,000
Milton-Freewater, Walla Walla River, Oregon 1968 1,782,0714, 11
Mission and Lapwai Creeks, Idaho7 1965 54,5384
Pendleton Levees, Umatilla River, Oregon 1960  
Riverside Area Unit8
   9,100
State Hospital Area (Zone 1)
   267,7484
Pendleton, Umatilla River, Oreg. 1939 143,2634
Pilot Rock, Birch Creek, Oregon5 1963 4,558
Pullman, Palouse River, Wash.8 1964 79,370
Shelley Area, Snake River, Columbia River Basin, Idaho 1958 32,3354
Umatilla River (Echo), Columbia River Basin, Oreg. 5 1960 24,145
Weiser River, Columbia River Basin, Idaho 1960 88,42712
Willow Creek Reservoir, Heppner, Oreg. 1966 —
Yakima River, West Richland, Wash.7 1964 238,8904
1Abandoned. Necessity for development was eliminated when John Day Reservoir was filled.
2Reported by Portland District prior to 1956.
3Includes $3,328 spent in fiscal year 1960 under authorization of Public Law 685, 84th Congress. See Annual Report for fiscal year 1960, page 1887.
4Completed project.
5Inactive for lack of local cooperation.
6$3,405 expended in fiscal year 1969 on report for model studies conducted prior to construction.
7Adopted by Chief of Engineers.
8Deferred for restudy.
9Includes final payment of $69,928 to contractor in fiscal year 1969.
10Withdrawn as a local flood protection project in June 1959. Included as a feature of Lower Granite Lock and Dam, Snake River, Wash.
11$5,368 regular construction funds were spent in fiscal year 1969 for updating general design memorandum. An additional $550,875 has been spent from funds authorized by P.L. 99, 84th Congress and antecedent legislation. Excludes $6,300 contributed funds.
12Includes an estimated $75,000 spent for planning on infeasible areas.

 
Table 39-F
Flood Control Works Under Special Authorization
(See Section 20 of Text)
Project Fiscal
Year
Costs		 Project Fiscal
Year
Costs
Asotin Creek, Asotin, Idaho $8,536 Miscellaneous Negative Reconnaissance Reports $4,271
Beech Creek, Mt. Vernon, Oreg. 8,606 Payette River, Idaho—Chapman Location 5,203
Big Canyon Creek, Peck, Idaho 3,541 Snake River, Stephens Loc, Blackfoot, Idaho 5,587
Lapwai Creek, Sweetwater, Idaho 462 South Fork Clearwater River, Kooskia-Stites Loc., Idaho 9,651
Lawyers Creek, Kamiah, Idaho 182 Stage Gulch, Stanfield, Oreg. 10,922
Little Canyon Creek, Glenns Ferry, Idaho 5,807 Touchet River, Waitsburg, Wash. 20,172
Lower Coppei Creek, Wash. 5,707 Umatilla River, Riverside-Mission, Oreg 4,263
Lower Dry Creek, Lowden, Wash. 1,309 Union Flat Creek, Uniontown, Wash. 1,622

 
Table 39-G
Flood Control Works Under Special Authorization
Snagging and Clearing
(See Section 20 of Text)
Project and Location Fiscal
Year
Costs		 Completed
Snake River, Jackson Hole, Wyo., Imeson Location $44,373 —
Touchet River, Columbia County, Wash. 50,896 March 1969
Tucannon River, Columbia County, Wash. 52,611 February 1969
Umatilla River, Umatilla County, Oreg. 15,061 February 1969
Walla Walla River, Umatilla County, Ore. 42,654 February 1969

 
Table 30-H
Snake River Downstream From Johnson Bar Landing
Oreg., Wash., and Idaho
(See Section 28 of Text)
Project Estimated Cost (Corps of Engineers Funds Only) Total New Work Appropriations
to June 30, 1969		 Cost to June 30, 1969 Percent
Completed		 Construction
Started
New Work. Maintenance
Ice Harbor Lock and Dam¹ $157,250,000 $129,647,151 $129,476,039 $5,530,751 83² Jan. 1956
Little Goose Lock and Dam¹ 152,000,000 129,430,100 126,924,535 — 84 June 1963
Lower Granite Lock and Dam¹ 216,000,000 42,629,823 32,159,077 — 15 July 1963
Lower Monumental Lock and Dam¹ 177,000,000 162,989,999 162,928,580 39,413 92 June 1961
Open River Improvements—
Lewiston to Johnson Bar Landing
 34,613 34,613³ 34,6134 123,253    
Open River Improvement - Pasco to Lewiston — — — 4,350    
Total Existing Project 702,284,613 464,731,686 451,522,844 5,697,767    
Previous Projects—Pasco to Lewiston 400,150 400,150 400,150 186,570    
Total Authorized Projects 702,684,763 465,131,836 451,922,994 5,844,337    
1See individual report.
2Entire project exclusive of Code 710 recreation facilities.
3Includes $1,350,000 for recreation facilities on completed project.
4Maintenance accomplished prior to 1953 with new work funds.

 
Table 39-I
Other Authorized Multipurpose Projects
Project For Last Full Report See Annual Report For: Cost to 30 June 1969
Construction
Asotin Dam, Snake River, Idaho and Wash. 1964 —

 
Table 39-J
Completed Flood Plain Studies
(See Section 31 of Text)
Location Requesting Agency Date Completed Federal Cost
Richland, Wash. (Yakima River) City of Richland July 1963 $4,467
Boise, Idaho (Boise River) City of Boise and Ada County Nov. 1967 26,958
Orofino, Idaho (Clearwater River) City of Orofino and Clearwater County May 1968 7,986
Walla Walla, Wash. (Walla Walla River tributaries) Walla Walla County July 1968 23,954
Payette, Idaho (Payette River) Payette County Sept. 1968 23,800
Pullman, Wash. (S.F. Palouse River and Missouri Flat Creek) City of Pullman May 1969 15,969

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