Report of The Secretary of Army
On Civil Works Activities
For Fiscal Year 1968

Department of the Army
U.S. Army Corps of Engineers
Extract Report of Improvements in 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.
2.		 Columbia River and Tributaries above Celilo Falls to Kennewick, Washington
Other Authorized Navigation Projects
Flood Control
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.		 Blackfoot Reservoir, Idaho
Columbia River Basin, Local Flood Protection Projects
Cottonwood Creek Dam, Idaho
Heise-Roberts Extension, Columbia River Basin, Idaho
John Day River, Oreg., Columbia River Basin, Local Flood Protection Project
Lucky Peak Lake, Idaho
Lyman Creek, Idaho
Mill Creek Lake, Wash.
Milton-Freewater, Walla Walla River, Oregon
Portneuf River and Marsh Creek, Columbia River Basin, Idaho
Ririe Reservoir, Willow Creek, Idaho
Stuart Gulch Reservoir, Boise, Idaho
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
19.
20.
21.
22.
23.
24.
25.
26.
27.		 Dworshak Reservoir, North Fork Clearwater River, 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, and Idaho
Other Authorized Multiple-Purpose Projects
General Investigations
28.
29.
30.		 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. COLUMBIA RIVER AND TRIBUTARIES ABOVE CELILO FALLS TO KENNEWICK, WASH.

Location Project includes improvement of 128 miles of Columbia River between head of Celilo Falls and Kennewick, Washington.

Previous project. For details see page 1992 of Annual Report for 1915; page 1889, Annual Report for 1931; and page 1845, Annual Report for 1938.

Existing project. A channel 7 feet deep and 150 feet wide at low water from Celilo Falls to Wallula, with no specific depth or width between Wallula and mouth of Snake River and for an approach channel 6 feet deep at low water from navigation channel in Columbia River to site of port development at Arlington, Oregon. With raising of the John Day pool in April 1968, slackwater was provided in the 67 mile reach of open river between the head of The Dalles reservoir and McNary Dam. Adequate depth for slackwater navigation now exists for the entire reach of the project by virtue of the three reservoirs formed by construction of The Dalles, John Day and McNary dams. No further work is contemplated under this project. (See table at end of Chapter for Acts authorizing existing project.)

Local Cooperation. River and Harbor Act of 1945 provides that for Arlington Channel, local interests construct a suitable freight terminal, open to all equally. Assurances were approved December 29, 1947, and site will be inundated when pool is raised behind John Day Lock and Dam. Port was inundated with raising of pool behind John Day Lock and Dam. Port of Arlington has provided adequate public terminal facilities.

Terminal Facilities. On Columbia River from Celilo to McNary Lock and Dam there are five privately owned grain and oil terminals with connections to truck and rail. Facilities are adequate for existing commerce. Above McNary lock and dam are five publicly owned terminals which handle general cargo and are open for public use. These terminals are adequate for existing commerce, and general development is keeping pace with increasing demands. In addition, there are 15 privately owned terminals serving grain, petroleum and chemical industries. Also there are five commercial marinas.

Operations and results during fiscal year. On Columbia River, reconnaissance and condition surveys of navigation channel from McNary lock and dam to John Day lock and dam site were conducted during September 1967.

Condition at end of fiscal year. Arlington approach channel was completed in 1948. Costs of existing project were $1,356,584 for new work and $1,007,429 for maintenance, a total of $2,364,013 regular funds. Raising of John Day pool during current fiscal year obviated requirement of a channel from Celilo to Kennewick. Therefore, in June 1968 entire project was reclassified to—Inactive Projects—category.

2. OTHER AUTHORIZED NAVIGATION PROJECTS

See table at end of chapter.

FLOOD CONTROL

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 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 1968) is $1,500,000.

Local cooperation. None required.

Operations and results during the fiscal year. Preparation of Design Memorandum No. 1, Hydrology, leading to establishment of a standard project flood and maximum probable flood determination was approved. Additional investigation of alternative combination of hydrologic and meteorological factors was submitted to OCE for approval. Approval of 32,000 cfs for spillway design flood was granted.

Condition at end of fiscal year. Modification of Blackfoot Dam and Reservoir in interest of increased flood control for 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 Document 531, 81st Congress, 2nd session, with particular reference to Upper Snake River Basin above Weiser, Idaho. In referenced review report, modification of Blackfoot Dam and Reservoir was presented as one of the potential projects warranting early consideration for construction. Interim report No. 2 on modification of Blackfoot Dam and Reservoir, dated March 1962, included additional information and analysis of February 1962 floods and confirmed project economic feasibility. It is on this latter report that congressional authorization is based. Design Memorandum No. 1, Hydrology, is complete. Foundation exploration drilling at China Hat Dam and at Blackfoot Dam is complete. General Design Memorandum No. 2 is 71 percent complete and is scheduled for submission in January 1969.

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 table 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: Heise-Roberts Extension, Idaho; John Day River Area, Oregon; and Portneuf River and Marsh Creek, Idaho.

Palouse River, Wash. project was reclassified by OCE March 20, 1968 to —deferred— category because project could be significantly affected by authorized survey investigations for Palouse River and Tributaries, which study is currently underway.

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

Due to lack of funds, no work has been accomplished on Palouse River, Wash. project, since this project was conditionally authorized. Project is in a deferred category.

5. COTTONWOOD CREEK DAM, 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 cubic feet per second 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 1968) is $1,100,000. Estimated non-Federal cost of lands, damages, and relocations is $178,000.

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 year. Foundation exploration was accomplished.

Condition at end of fiscal year. Hydrology Design Memorandum is 69 percent complete, and General Design Memorandum is 57% complete.

6. HEISE-ROBERTS EXTENSION, COLUMBIA RIVER BASIN, IDAHO

Location. On Snake River, Idaho, between city of Roberts and mouth of Henrys Fork, river mile 819 to 836. This general area lies approximately 20 miles north of city of Idaho Falls, Idaho.

Existing project. The project provides channel rectification and levees along left bank of Snake River from river mile 819 to 836 with intermittent riprap protection on both banks. Channel design capacities are based on a project design flood of 33,000 cubic feet per second in Snake River. Project was conditionally authorized under Columbia Basin plan by section 204, Flood Control Act of May 17, 1950, subject to economic justification which was established in 1963.

Estimated Federal cost of project (July 1968) is $3,400,000. Estimated non-Federal costs are $73,500 for rights-of-way and relocations.

Local Cooperation. Fully complied with.

Operations and results during fiscal year. Construction was completed.

Condition at end of fiscal year. Construction began in November 1966 and was physically completed in May 1968, but settlement of a claim by contractor is pending.

7. JOHN DAY RIVER, COLUMBIA RIVER BASIN, ORE.

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 1968) is $715,000. Estimated non-Federal cost (July 1968) is $128,300 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. Letters of intent have been received from county and city officials.

Operations and results during the fiscal year. Advance planning was completed and preparation of plans and specifications was initiated.

Condition at end of fiscal year. Preconstruction planning was 50% complete.

8. LUCKY PEAK RESERVOIR, BOISE RIVER, 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 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. Construction of additional recreation facilities for completed project is estimated to cost $454,000 (July 1968), raising total project estimate to $19,535,250.

Local cooperation. None required.

Operations and results during the fiscal year. New work: Construction of recreation facilities at Chimney Rock site began, and planning for future development continued. Construction to improve intersection of project office access road with highway was accomplished. Maintenance: Normal operation and maintenance of project continued. Reservoir water quality studies were 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.

9. 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 selected for construction by Chief of Engineers May 1967, 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. Sunnydell Irrigation District has submitted a letter of intent to sponsor project and comply with requirements of Section 3, Flood Control Act of 1936, as amended.

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

Condition at end of fiscal year. Real Estate plans are complete and have been forwarded to sponsor to obtain rights-of-way. Construction plans are 90 percent complete. No construction has been done.

10. 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 division 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. Completed cost of 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 1967 were performed at a cost of $58,262. Total expenditures to date by local interests are $617,854. For further details see page 2006 of Annual Report for 1962.

Operations and results during the fiscal year. Construction of a foot bridge across diversion structure was completed. Ordinary general maintenance by Government forces continued which included routine regulation 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.

11. MILTON-FREEWATER, WALLA WALLA RIVER, OREGON

Location. On both banks of Walla Walla River, vicinity of Milton-Freewater, Oregon, from McCoy Bridge at River Mile 49.5 to Joe West Bridge, River Mile 56.5. See U.S. Geological Maps—Milton-Freewater—and—Bowling Hill—Oregon, dated 1964.

Existing project. Channel rectification and improvement of about 7 miles of Walla Walla River in the vicinity of Milton-Freewater, Oregon, were authorized by the Flood Control Act of 1941. Project consists of revetted levees and channel improvement designed to protect Milton-Freewater and other low-lying areas in Walla Walla River Valley from flood discharges about two times as great as 1931 maximum flood of record. Construction began in 1949 and was completed in 1952 except for the upper 1.7 miles of channel clearing and rectification which is deferred indefinitely as being non-essential for the designed protection. The initial cost of the project was $886,956 from Federal funds; $59,600 for lands and damages paid for by local interests; and $6,300 contributed funds.

Serious deterioration of revetments occurred during the past few years, and record floods of December 1964 and January 1965 inflicted massive damage to the levees. Since the occurrence of these high flows (9,000 cubic feet per second), hydrologic data have been revised, and new design standards have been set for rehabilitation and reconstruction of the original channel works. Studies have established that previous design is inadequate to contain maximum flows. The present design with latest revised riprap criteria provides protection from flows of 12,000 cubic feet per second. Present hydrological data indicates these flows to have a frequency occurrence of about once in 170 years.

Project was authorized by Flood Control Act of 1941, and has been completed at a total Federal cost of $2,327,578, of which $1,776,703 is with regular project funds plus an additional $550,875 flood control emergency funds under authority of Public Law 99, 84th Congress.

Local cooperation. Fully complied with.

Operations and results during the fiscal year. A contract for $1,234,870 was completed to reconstruct the lower 5.3 miles of levees and to build a drop structure with fish ladder at river mile 51.9.

Condition at end of fiscal year. Reconstruction began in October 1966 and was physically completed in October 1967.

12. 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 and revetments or improvements to existing 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 (July 1967) is $6,800,000 Federal and $481,700 non-Federal for rights-of-way, a new bridge, 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 continued except for suspension of work during winter weather.

Condition at end of fiscal year. Construction of Pocatello Unit started July 1966 and contract is 77 percent complete.

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.

13. 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 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 8.2 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 1968) is $15,000,000 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. A contract for abutment stripping and for visitors' facilities was completed.

Condition at end of fiscal year. Approximately 22 percent of necessary real estate has been acquired. Work is continuing on following specific design memoranda: Main Dam, Diversion Facilities and Outlet Works, Flood Channel, Access Road, and Reservoir Master Plan. Construction was started in June 1967. Entire project is about 13 percent complete.

14. 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 a gravel blanket. 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 1968) is $895,000. Estimated non-Federal cost for land is $63,000.

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 was completed and general design memorandum started and continued throughout the year.

Condition at end of fiscal year. Hydrology design memorandum is 53 percent complete, and general design memorandum is 66 percent complete.

15. 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 at end of chapter for inspections made during fiscal year.)

Fiscal year costs were $12,175. Total costs to June 30, 1968 were $89,092.

16. 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 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. In coordination with the 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 submitted to higher authority. Work began on preparation of plan of operation for Phillips Lake behind Mason Dam on Powder River, Oregon. Fiscal year costs were $14,332.

17. OTHER AUTHORIZED FLOOD CONTROL PROJECTS

See table at end of chapter.

18. FLOOD CONTROL WORKS UNDER SPECIAL AUTHORIZATION

Flood Control Activities Pursuant to Section 205, Public Law 858, 80th Congress as Amended (Preauthorization).

See tables on flood control work under special authorization at end of chapter.)

Emergency Flood Control Activities - Repair and Flood Fighting and Rescue Work (Public Law 99, 84th Cong., and Antecedent Legislation)

Federal cost for fiscal year was $12,495 for advance preparation; $52,808 for flood emergency operations; and $124,321 for repair and restoration.

Snagging and Clearing Navigable Streams and Tributaries in Interest of Flood Control (Sec. 208, 1954 Flood Control Act, Public Law 780, 83d Cong.)

(See tables on flood control work under special authorization at end of chapter.)

MULTIPLE-PURPOSE PROJECTS INCLUDING POWER

19. 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. 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 propose acquisition of land outside reservoir limits to mitigate losses of browse areas inundated by reservoir. Planning was authorized by 1958 Flood Control Act in accordance with plan presented in Senate Doc. 51, 84th Cong., 1st session. Project authorized for construction by P.L. 87-874. Initial appropriation for construction was by Public Works Appropriation Act of 1962. Estimated total cost for new work (July 1968) is $253,740,000, consisting of $251,000,000 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. Specific design memoranda were approved were approved by higher authority for a steelhead fish hatchery, Dent Bridge, Clearwater Highway District roads, and county roads. Contracts were let for foregoing except Dent Bridge. A third contract was awarded for reservoir clearing. A contract was awarded for powerhouse main turbines. Most of reservoir area marketable timber owned jointly by Corps, USFS, and BLM was sold apart from reservoir clearing contracts.

Condition at end of fiscal year. Preparation of specific design memoranda are in progress for Reservoir Master Plan, buildings and grounds at dam, and recreation sites. Contracts for Dent Bridge, powerhouse, and powerhouse materials are scheduled to be advertised during FY 1969. Construction of the project started in April 1963 and project is estimated to be 27 percent complete.

20. ICE HARBOR LOCK AND DAM, SNAKE RIVER, 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. 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, project consists of a concrete nonoverflow 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 1968) is $153,330,800, consisting of $153,139,000 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 $830,000 Corps of Engineers funds, raising total project cost to $154,160,800.

Local cooperation. None required.

Operations and results during the fiscal year. Deferred construction work was continued on Union Pacific Railroad and completed on Northern Pacific Railway, and Spokane, Portland and Seattle Railway. Work was completed on a construction contract estimated at $654,000 for reinforcement of tainter valve shaft walls in the navigation lock. A contract for additional prestressing of emptying valve shafts was awarded and completed. The installation of equipment at Ice Harbor project for remote control of Snake River plants continued and was essentially completed. A contract for $16,500 was awarded for a log boom for controlling floating debris on the reservoir. A design memor for public use facilities at Charbonneau Park recreation area was in process of revision to include park, as well as marina facilities, and preparation of plans and specifications was 75 percent accomplished. Preconstruction planning for additional generating units was initiated. During fiscal year, normal operation of navigation lock and power plant continued, and 2,017,021 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 are 95 percent complete. Construction started in December 1955 and initial project is over 99 percent complete. Preliminary design of 3 additional generating units has been accomplished.

21. 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 reservoir. 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 1968) is $460,477,000, consisting of $460,000,000 Corps of Engineers funds, $333,000 for Coast Guard navigation aids, and $144,000 for value of public-owned land.

Local cooperation. None required.

Operations and results during the fiscal year. Relocation of highways and railroads were completed, except for deferred construction which covers a period of 5 years after the reservoir reaches elevation 265. Construction and removal of third-step cofferdam and all work required to raise low spillway bays and lock sill were completed prior to April 16, 1968, on which day creation of reservoir began. Also, prior to pool raise, all clearing below pool level was accomplished in reservoir area and at 12 recreation sites. Minimum operating pool elevation 257 was reached on April 21, 1968. Upstream navigation floating guard wall was completed and installed. Assembly of turbines, generators, and associated mechanical and electrical equipment continued. Preparation of plans and specifications on remaining work continued. Permanent fish ladders became operative on April 20, and first vessel through lock was Coast Guard tug Bluebell on April 21.

Condition at end of fiscal year. Relocation work on railroad and highways is completed except for deferred construction. Work is complete on fish ladders, spillway and lock. Work continues on powerhouse and installation of mechanical and electrical equipment. Unit No. 1 is producing commercial power. Installation of generating equipment will continue until November 1971, at which time 16 of 20 units will be completed. Development of 12 recreation sites has been initiated. Miscellaneous relocations including towns, schools, cemeteries, and utilities are 94 percent complete. The dam, lock, powerhouse, and fish facilities are 78 percent complete. Project is 87 percent complete.

22. LITTLE GOOSE LOCK AND DAM, SNAKE RIVER, WASH.

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 slackwater to Lower Granite lock and dam site. Dam structure is approximately 2,600 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 provides 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 1968) is $149,090,000, consisting of $149,000,000 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 placing operation continued during year along with embedment of turbine parts for three 212,400 HP hydraulic turbines and three 850 cubic feet per second fish attraction water pumps. Erection and installation of spillway gates, navigation lock gates, bascule bridges, powerhouse intake gates and associated machinery items are now underway.

A $2,599,783 Powerhouse Installation Contract was awarded for erection and installation of all remaining electrical, mechanical, hydraulic, and miscellaneous powerplant operating equipment.

Supply contracts were awarded for Camas Prairie Railroad track materials, 50-ton powerhouse gantry crane and remote control electrical equipment.

A relocation contract was awarded for grading of the Camas Prairie Railroad from Purrington to Schultz Bar and construction continued on the railroad between Riparia and Central Ferry.

Design studies are nearing completion on remaining sections of Camas Prairie Railroad relocations, Central Ferry Bridge, Washington State Highway 127, and preparation of agreements with utility companies.

Condition at end of fiscal year. Concrete placement during the year was 630,000 cubic yards, bringing the total to 1,630,000 cubic yards or approximately 96 percent of all concrete work. The main dam contractor has completed embedded parts for three 850 cubic feet per second fish attraction water pumps. Embedding of parts for three 212,400 HP hydraulic turbines is 50 percent complete. Erection of downstream lock miter gate is nearing completion along with upstream lock tainter gates. Installation of spillway tainter gates is underway and erection of upper bascule bridge and machinery over lock has been initiated. The 100-ton powerhouse intake gantry is complete and 600-ton powerhouse bridge crane is complete except for final testing. Main dam contract is 90 percent complete.

First section of Camas Prairie Railroad relocation grading contract from Riparia to Central Ferry is approximately 94 percent complete and a second section from Purrington to Schultz Bar has been awarded.

The powerhouse installation contractor is mobilizing equipment and materials for completion of powerhouse electrical and mechanical machinery.

Design of the Central Ferry Bridge by the State of Washington is complete and 2.8 miles of State Highway No. 127 (former No. 295) approaches are nearing completion. Acquisition action for project lands is approximately 97 percent complete. Project completion date is scheduled for June 1970 for beneficial use of navigation and power production.

Construction began June 1963 and entire project is estimated to be 71 percent complete.

23. LOWER GRANITE LOCK AND DAM, SNAKE RIVER, WASH.

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 requires backwater levees near head of pool at Lewiston, Idaho, and Clarkston, Wash. Benefits afforded by project will include slackwater navigation, power generation, recreation, and incidental irrigation. Normal pool elevation of 738 feet mean sea level is to extend upstream about 36 miles and will provide slackwater 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 with three 135,000 kilowatt units installed initially, and 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 (105 feet) 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 1968) is $201,032,000, consisting of $204,000,000 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. A $41,051 contract for surfacing section 2 of south shore access road was completed. A specific design memorandum on foundation grouting and drainage was submitted to and approved by higher authority. About 42 percent of necessary real estate has been acquired. Advertising of main dam contract was delayed another year due to lack of funds.

Condition at end of fiscal year. Work is continuing on following specific design memoranda: North Lewiston Levee, Wet Lewiston Levee, East Lewiston Levee, Clarkston Levee, North Shore Access Road, utility relocations and road relocations. Main dam contract, estimated at $90,000,000 is ready for advertising. Supply contracts for three large turbines $4,044,684, three power transformers $853,500, and three turbine governors $294,830 are 57 percent, 5 percent and 3 percent complete, respectively. Construction started in July 1965 (cofferdam). Entire project is estimated to be about 12 percent complete, including land acquisition.

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

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 pool level at elevation 540 feet mean sea level, and appurtenant facilities, C 10260 Little Goose lock and dam. The dam, located in the reservoir created creating a slack water pool about 30 miles long extending to site of Little Goose lock and dam. The dam, located in the tailwaters created by Ice Harbor Dam, will raise water surface about 100 feet, and will be concrete gravity with earthfill and rockfill abutments, will be 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 six 135,000-kilowatt units, or 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 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, which 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 costs for new work (July 1968) is $181,102,000 including $181 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: Navigation Lock Monolith Modification contract was awarded and is approximately 9 percent complete. Contract for Upstream Floating Guidewall -B- was awarded and is approximately 18 percent complete. Contract for Reservoir Clearing was awarded. North shore construction continued. Contract includes abutment embankment, spillway and nonoverflow dam, raising upper sill block and modification of lock upstream gate, fish ladder, powerhouse and intake structure, miscellaneous equipment, tailrace, rockfall correction and Windust detour road, access road, railroad spur to powerhouse, downstream navigation channel, permanent visitors' facilities (south shore), permanent water supply, third-step cofferdam, temporary fish facilities, steel piling, removal of first-step cofferdam cells, Government-furnished materials, miscellaneous construction facilities, and repairs to second-step cofferdam. Contract is approximately 94 percent complete. Installation of powerhouse equipment and appurtenances continued. Contract includes completion of powerhouse and installation of power generation equipment such as turbine, governors, transformers and other associated appurtenances, except generators which are installed by supplier. Contract is approximately 41 percent complete.

Work on major supply contracts continued, as follows: Turbines (3 units) are about 99 percent completed. Combined spillway and intake gantry crane (100-ton) and powerhouse bridge crane (600-ton capacity) have been installed. Generators (3 units) to be installed by the supplier were about 93 percent completed. Main unit transformers delivered and installation of first phase is complete. Governors (3 units) to be installed by equipment installation contractor were delivered and are ready for installation. 15 KV bus and breakers were completed. Fishwater pump and turbines were completed. Work on trash raking and 50-ton tailrace cranes is about 28 and 95 percent complete, respectively. Work was underway on other minor supply contracts with completion varying from 0 to 97 percent.

Relocation of Union Pacific Railroad Co. Hinkle-Spokane main line to bypass the dam construction area was completed under temporary agreement, except for deferred construction. Agreement with Company for relocation of Tekoa-Ayer and Tucannon Branch Lines, including related facilities, was continued and is about 94 percent complete. Work on Tekoa-Ayer Branch, Snake River Bridge and approaches, and highway overpass was completed. Relocations on north shore of Tekoa-Ayer Branch Line, Camas Prairie RR and Bridge, and Whitman County Road and Bridge are approximately 98 percent complete. On south shore, relocations of the Tekoa-Ayer Branch Line, Tucannon Branch Line and State Highway 11-B are approximately 98 percent complete. Contract for Riparia Station Facilities was awarded and is approximately 54 percent complete. A contract was awarded for U.P.R.R. Main Line Bank Protection and Drainage at Fields Gulch. This work is approximately 2 percent complete.

Condition at end of fiscal year. Final design work is approximately 97 percent complete. Construction started in fiscal year 1961. The entire project is about 82 percent complete. Completed items include land acquisition; relocation of Indian graves; shooflies, grading, ballast production, and embankment protection for the Hinkle-Spokane main line relocation, Union Pacific Railroad (Parts I and II); first stage of north abutment embankment and south shore construction for the dam and lock; hoisting equipment for fish facilities; access and Walla Walla County roads; downstream navigation channel; visitors' facilities on north shore; utilities for visitors' facilities on south shore; microwave radio station and building; wind gage supports for Joso Bridge; 100-ton spillway and intake gantry crane; 600-ton bridge crane; agreement with Columbia County REA. Hydraulic intake hoist contract is complete as well as other minor supply contracts.

25. 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 1968) is $295,012,000, consisting of $295,800,000 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 $1,175,000, raising total project cost to $296,187,000.

Local cooperation. None required.

Operations and results during the fiscal year. Negotiations progressed with Union Pacific Railroad Co. to effect a contract to modify their bridge over Columbia River. Negotiations were completed with Northern Pacific Railway Co. and agreement executed for reconstruction of their Snake River Bridge No. 3.

Design is about 65 percent complete for Code 710 recreation facilities at Cold Springs site, and plans for general development of recreation facilities in leased areas continued.

Installation of equipment at McNary powerhouse for remote control of Lower Snake River dams continued and is essentially complete. A contract for $26,500 was awarded for paving McNary Beach access road and parking area, and a contract for $141,000 was awarded for an additional pumphouse to supplement pumping from behind Pasco Levee 12-1. Modification to McNary fish passage facilities was completed to permit raising John Day pool. Normal maintenance of project continued. A total of 6,544,255 hours of electrical energy was delivered to Bonneville Power Administration, the marketing agency.

Condition at end of fiscal year. Construction of existing project started May 1947 and is 97 percent complete (June 1968). 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.

NP Ry is proceeding with design and contract plans and specifications for modification of Snake River Bridge No. 3 and will award a contract and supervise construction. Modification involves funding by two projects - McNary Lock and Dam, and Lower Monumental Lock and Dam. When NP Snake River Branch of the railway was condemned in connection with Lower Monumental Lock and Dam project, traffic was subsequently rerouted over NP Snake River Bridge No. 3. In order to provide for increased traffic, load bearing capacity of bridge is therefore to be upgraded concurrently with navigation modification. Work is scheduled to start in Fiscal Year 1970.

26. 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. (See table at end of chapter for improvements included in existing project.)

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 Lock and Dam - one grain and two petroleum. In addition, there are four publicly owned marinas and 14 small boat launching ramps, all open to public use. Facilities are adequate until slack water 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 during May 1968. Navigation aids were repaired and rock was removed from rapids in reach between Salmon River and Johnson Bar.

Condition at end of fiscal year. Costs of existing project were $406.696,935 for new work and $4,955,727 for maintenance, a total of $411,652,662 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 at end of chapter for summary of status of work on existing and previous project authorization.)

27. OTHER AUTHORIZED MULTIPLE PURPOSE PROJECTS

See table at end of chapter.

GENERAL INVESTIGATIONS

28. SURVEYS

Total cost of surveys during fiscal year was $272,322. Of that amount $6,017 was for navigation studies, $245,106 for flood control studies, and $21,199 for cooperative studies with Soil Conservation Service and Bureau of Reclamation.

29. COLLECTION AND STUDY OF BASIC DATA

During fiscal year, flood hazard information was provided to agencies from states of Idaho and Washington, various cities and counties in these states, and in Oregon. Irrigation companies and other corporations were also provided flood hazard information for locations where data were readily available. Flood hazard information was provided to numerous Federal agencies including Federal Housing Administration, Veterans Administration, General Services Administration, Bureau of Indian Affairs, Federal Highway Administration, Atomic Energy Commission, Fish and Wildlife Service, and Department of Health, Education and Welfare.

Flood plain information reports were completed for Boise River and Tributaries in Boise, Idaho and vicinity, and on Clearwater River in the Orofino and Riverside, Idaho areas. A flood plain information report covering Walla Walla River Tributaries in vicinity of Walla Walla, Wash. is complete except for final printing. On Payette River in vicinity of Payette, Idaho flood plain information report is approximately 90 percent completed and is scheduled for presentation to local people during the first quarter for Fiscal Year 1970.

In addition to preparation of flood plain information reports and providing flood hazard information, meetings were held with County, City, and State officials from Oregon, Washington, Idaho, and Wyoming, to discuss our Flood Plain Management Program.

Total fiscal year costs were $93,143. (See table at end of chapter on completed flood plain studies.)

30. RESEARCH AND DEVELOPMENT

Hydrologic investigations to improve forecasting procedures with respect to floods and seasonal runoff volumes were continued. Frequency and magnitude of thunderstorms were investigated. Time of travel studies of water in streams were participated in with U.S.G.S. Fiscal year cost of these studies was $5,356.

Engineering studies consisting of finite element analysis of gravity lock walls were also performed during fiscal year for cost of $4,611.

Combined fiscal year costs of all research and development were $11,387.

 
Cost and Financial Statement
Section Project Fiscal Year FY 64 FY 65 FY 66 FY 67 FY 68 Total to
30 June 1968
1. Columbia River and Tributaries Above Celilo Falls to Kennewick, Washington New Work
Approp. — — — — — 1,851,195¹
Cost — — — — — 1,851,195¹
Maintenance
Approp. 47,157 1,914 2,500 10,110 6,344 1,108,259²
Cost 6,760 39,441 5,370 9,826 6,628 1,108,239²
3. Blackfoot Reservoir, Idaho New Work
Approp. — 46,000 24,000 10,000 12,316 92,316
Cost — 25,978 38,230 11,428 5,849 81,485
4. Columbia River Basin Local Flood Protection
Projects (Consolidated)
 New Work
Approp.           73,171³
Cost           73,171³
5. Cottonwood Creek Reservoir, Boise, Idaho New Work
Approp.         75,000 75,000
Cost         55,498 55,498
6. Heise-Roberts Extension, Columbia River Basin, Idaho New Work
Approp. 75,000   100,000 542,000 2,686,000 3,428,377
Cost 27,550 28,995 102,626 562,783 2,590,699 3,333,030
7. John Day River, Oreg., Columbia Basin Local Flood Protection Project New Work
Approp. —7,340 5,000 20,000 50,000   133,232
Cost 10,060 1,020 18,113 21,987 24,058 123,410 4
8. Lucky Peak Lake, Boise River, Idaho New Work
Approp. 130,974 41,726 —3,550 16,000 12,800 19,350,500 5
Cost 33,656 132,216 7,713 15,313 9,006 19,338,296 6
Maintenance
Approp. 99,600 97,000 123,100 129,000 213,000 1,283,740
Cost 123,977 81,881 115,486 125,374 235,884 1,282,018
9. Lyman Creek, Idaho New Work
Approp.     14,500 127,000   163,100
Cost 13,759 3,276 1,406 12,795 35,336 71,001
10. Mill Creek Lake, Wash. New Work
Approp. 6,000 4,000 —78 — — 2,230,601 7, 8
Cost 9,334 5,365 — —   2,230,601 7, 8
Maint.
Approp. 25,800 44,200 30,600 108,500 49,800 977,170
Cost 27,347 33,195 35,948 113,103 49,261 974,858
11. Milton-Freewater, Walla Walla River, Oregon New Work
Approp.     20,000 1,031,319   1,938,275 9
Cost     2,755 776,074 110,917 1,776,703 9, 10
12. Portneuf River and Marsh Creek, Columbia River Basin, Idaho Federal Funds - New Work
Approp. 57,000 120,000 430,000 2,300,000 2,670,000 5,658,276
Cost 55,371 107,182 181,046 2,553,905 2,117,680 5,091,216
Contributed Funds - New Work
Contributed. — — 36,800 — — 36,800
Cost — — — — 19,366 19,366
13. Ririe Reservoir, Willow Creek, Idaho New Work
Approp. 386,177 240,061 258,800 350,000 750,000 2,060,038
Cost 276,713 242,767 351,087 316,509 657,581 1,907,622
14. Stuart Gulch Dam, Idaho New Work
Approp. — — — — 45,000 45,000
Cost — — — — 27,916 27,916
19. Dworshak Dam and Reservoir, Idaho New Work
Approp. 3,500,000 5,277,000 9,797,200 20,026,000 25,200,000 68,261,200
Cost 3,590,945 4,020,437 10,499,948 20,518,035 24,223,607 66,986,491
20. Ice Harbor Lock and Dam, Snake River, Wash. New Work
Approp. 820,000 2,490,000 472,778 910,000 902,200 129,247,15111
Cost 875,542 2,038,326 962,238 687,819 1,004,806 129,040,29712
Maint.
Approp. 707,200 1,252,800 912,000 825,000 555,600 4,912,000
Cost 716,883 1,085,880 898,710 860,185 661,329 4,851,918
21. John Day Lock and Dam (Lake Umatilla), Oreg. & Wash. New Work
Approp. 52,672,900 75,190,000 72,800,000 42,617,000 40,800,000 399,219,900
Cost 50,723,411 74,146,532 74,687,000 43,161,336 41,001,484 397,761,988
Maint.
Approp. — — — — 78,000 78,000
Cost — — — — 75,983 75,983
22. Little Goose Lock and Dam (Lake Bryan), Wash. New Work
Approp. 7,100,000 9,625,000 18,100,000 36,000,000 33,050,000 107,530,100
Cost 7,100,779 6,044,991 21,330,324 35,922,509 31,963,866 105,879,307
23. Lower Granite Lock and Dam, Wash. New Work
Approp. 884,000 760,000 10,330,000 10,589,000 876,000 24,729,823
Cost 759,966 864,949 10,143,862 5,883,552 4,895,961 23,781,175
24. Lower Monumental Lock and Dam, Wash. New Work
Approp. 22,905,000 21,450,184 29,924,800 23,400,000 20,686,500 148,689,999
Cost 23,607,788 16,904,556 29,713,145 25,154,919 23,150,407 147,961,543
25. McNary Lock and Dam (Lake Wallula), Wash. New Work
Approp. —193,974 3,274 70,650 95,000 215,000 286,146,626 13
Cost 11,874 4,573 11,602 32,746 25,973 285,835,099 14
Maint.
Approp. 1,558,000 1,368,500 1,583,000 1,242,000 1,679,500 21,535,170
Cost 1,591,388 1,361,821 1,346,327 1,429,281 1,617,826 21,309,435
26. Snake River Downstream from Johnson Bar Landing, Oreg., Wash., &Idaho New Work
Approp. 1,709,000 34,325,184 58,827,578 70,899,000 55,514,700 410,631,836 15
Cost 32,344,275 25,852,822 62,149,569 67,648,799 55,514,700 407,097,085 15
Maint.
Approp. 710,646 1,256,153 916,404 825,557 572,512 5,205,376 16
Cost 719,329 1,090,232 901,417 862,272 675,411 5,142,297 16
1Includes $494,611 for Previous Projects, but Excludes $23,000 Contributed Funds.
2Includes $100,830 for Maintenance on Previous Projects.
3Comprises 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; Grande Ronde Valley, Oregon; 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; and Boise Valley, Idaho. Excludes Projects Reported in Detail in an Individual Report: Heise-Roberts Extension, Idaho; John Day River Area, Oregon; and Portneuf River and Marsh Creek, Idaho. Does not include amounts for improvements in Portland and Seattle Districts.
4Includes an estimated $71,000 spent for planning on infeasible areas.
5Includes $269,250 allocated for Code 710, Recreation Facilities on Completed Projects.
6Includes $257,046 expended for Code 710, Recreation Facilities on Completed Projects.
7Excludes $80,000 contributed funds.
8Includes $68,446, Code 710, Recreation Facilities on Completed Projects.
9Excludes $6,300 Contributed Funds.
10An Additional $38,049 was spent in FY 1968 for a total to date of $550,875 from funds authorized by P.L. 99, 84th Cong. and antecedent legislation.
11Includes $67,178 allotted for Code 710, Recreation Facilities on Completed Projects.
12Includes $32,370 expended for Code 710, Recreation Facilities on Completed Projects. Excludes $82,500 contributed for artificial spawning channel.
13Includes $281,626 allotted for Code 710, Recreation Facilities on Completed Projects.
14Includes $850,375 Net Value of Cost or Property Transferred From Project. Includes $98,809 expended under Code 710, Recreation Facilities on Completed Projects.
51Includes $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).
16Includes $186,570 for maintenance on previous projects (Pasco to Lewiston).

 
Existing Project Was Authorized by the Following
Section Project Acts Work Authorized Documents¹
1. Columbia River and Tributaries Above Celilo Falls to Kennewick, Wash. Apr. 8, 1935 Emergency Relief Appropriation Act Authorized Existing Project as an Emergency Relief Project Rivers and Harbors Committee Doc. 16, 73d Cong., 2d Sess.
Aug. 30, 1935 Adopted Existing Project as a River and Harbor Project Do.
Mar. 2, 1945 Arlington Approach Channel S.Doc. 28, 76th Cong., 1st Sess.
Do. Kennewick Approach Channel H. Doc. 324, 77th Cong., 1st Sess.²
¹Contains latest published map.
²Construction of McNary Dam has obviated necessity for this work.

 
Other Authorized Navigation Projects
Section Name of Project For Last Full Report See Annual Report For Cost to June 30, 1968
Construction
1. Umatilla Harbor, Oreg.¹ 1952 —
¹No funds appropriated for work. Inactive.

 
Protection to Areas in Walla Walla District Under 1950 Authorization
Section Project Project Estimated
Federal
Cost 		Status June 30, 1968
Appropriated Cost
4. Columbia River Basin, Local Flood Protection Projects Blackfoot Area, Snake River, Idaho1 2 $42,796 $42,796
Blackfoot River, Idaho1 2 391,143 391,143
Boise Valley, Idaho1
Ada County Unit
 310,000 46,084 46,084
Canyon County Unit4
 652,800 10,600 10,600
Camas Creek, Idaho (Feasibility Doubtful)5 — 9,080 9,080
Grande Ronde Valley, Oregon1, 6 8,639,000 102,458 102,458
Heise-Roberts Extension, Idaho3 3,400,000 3,428,377 3,333,030
John Day River Area, Oregon3 715,000 133,232 123,410
Kendrick, Potlatch River, Idaho1 2 59,941 59,941
Little Wood River, Idaho (Carey)¹, 8 64,000 21,334 21,334
Lower Walla Walla River, Washington (Not Feasible) — 4,000 4,000
Malheur River, Oregon
Vale Unit1
 2 338,580 338,580
Willow Creek Unit1, 9
 266,000 — —
Mill Creek, Washington (Not Feasible) — 3,537 3,537
Mud Lake Area, Idaho (Not Feasible) — 5,996 5,996
Palouse River, Washington 6 914,000 — —
Payette Valley, Idaho 6 — 23,178 23,178
Portneuf River and Marsh Creek, Idaho
Pocatello Unit 3
 6,800,000 5,658,276 5.091,216
Inkom-Marsh Creek Unit9
 750,000 — —
Shelley Area, Snake River, Idaho 1 2 32,335 32,335
South Fork, Clearwater River, Idaho10 — 3,899 3,899
Teton River, Idaho (Not Feasible) — 10,387 10,387
Touchet River, Wash. (Not Feasible) — 11,198 11,198
Umatilla River, Oregon (Echo) 1, 11 879,000 24,145 24,145
Weiser River, Idaho1 1,350,000 88,427 88,42712
Whitebird Creek, Idaho10 — 1,896 1,896
Total $10,450,899 $9,778,670
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. Five-year limitation on project authorization began April 18, 1962.
5Inactive. Five-year limitation on project authorization began March 23, 1960.
6Deferred for restudy.
7Includes $71,000 spent on infeasible areas.
8Inactive. Five-year limitation on project authorization began April 21, 1960.
9Inactive. Lacks local cooperation.
10Construction at this location has obviated need for project.
11Inactive. Five-year limitation on project authorization began November 19, 1959.
12Includes $75,000 spent on infeasible Cambridge and Midvale areas.

 
Inspection of Completed Flood Control Projects
Section River Basin Number of
Projects		 Month
Inspected
15. Blackfoot 1 May 1968
Boise 1 February 1968
Clearwater 1 June 1968
Esquatzel Coulee 1 June 1968
Little Wood 1 May 1968
Malheur 1 May 1968
Palouse 1 June 1968
Potlatch 1 June 1968
Salmon 2 May 1968
Snake 5 May 1968
Touchet 2 June 1968
Walla Walla 3 June 1968
Yakima 1 June 1968

 
Other Authorized Flood Control Projects
Section Project For Last Full Report See Annual Report For: Cost to June 30, 1968
Construction
17. Arlington, Alkali Canyon, Ore.1 19502 $23,4393
Blackfoot Area, Snake River, Columbia River Basin, Idaho 1958 42,7964
Blackfoot River, Columbia River Basin, Idaho 1965 391,1434
Boise Valley, Columbia River Basin, Idaho 1967  
Ada County Unit
   46,0845
Canyon County Unit
   10,600
Catherine Creek Reservoir, Oregon 1966 —
Colfax, Palouse River, Washington 1967 5,552,2786
Connell, Washington7 1967 292,7924
Dayton, Touchet River, Washington 1966 380,6174
Grande Ronde Valley, Columbia River Basin, Oregon 7 1958 102,458
Heise-Roberts Area, Snake River, Idaho 1955 1,575,8384
Jackson Hole, Snake River, Wyoming 1967 2,232,6814
Kendrick, Potlatch River, Columbia River Basin, Idaho 1960 59,9414
Lewiston-Clarkston Levees9 1950 —
Little Wood River (Carey), Columbia River Basin, Idaho 10 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
   338,5804
Willow Creek Unit11
   —
Mission and Lapwai Creeks, Idaho7 1965 54,5384
Pendleton Levees, Umatilla River, Oreg. 1960  
Riverside Area Unit8
   9,100
State Hospital Area
   267,7484
Pendleton, Umatilla River, Oreg. 1939 143,2634
Pilot Rock, Birch Creek, Oreg.12 1963 4,558
Pullman, Palouse River, Wash.13 1964 79,370
Shelley Area, Snake River, Columbia River Basin, Idaho 1958 32,3354
Umatilla River (Echo), Columbia River Basin, Oreg.14 1960 24,145
Weiser River, Columbia River Basin, Idaho 1960 88,42715
Willow Creek Reservoir, Heppner, Oreg. 1966 —
Yakima River, West Richland, Wash.7 1964 238,8904
1Inactive. Necessity for development was eliminated when Lake Umatilla was created.
2Reported by Portland District prior to 1956.
3Includes $3,328 spent in fiscal year 1960 under authorization of P.L. 685, 84th Congress. See Annual Report for fiscal year 1960, page 1887.
4Completed project.
5$167 expended in FY 1968 for contacts with local interests.
6$6,080 expended in FY 1968 on Report for Model Studies Conducted Prior to Construction.
7Authorized by Chief of Engineers.
8Deferred for restudy.
9Withdrawn as a local flood protection project in June 1959. Included as a feature of Lower Granite Lock and Dam, Snake River, Wash.
10Inactive. Five-year limitation on project authorization began April 21, 1960.
11Inactive. Five-year limitation on project authorization began October 14, 1964.
12Inactive. Five-year limitation on project authorization began December 2, 1963.
13Inactive. Five-year limitation on project authorization began May 1, 1964.
14Inactive. Five-year limitation on project authorization began November 19, 1959.
15Includes an estimated $75,000 spent for planning on infeasible areas.

 
Flood Control Works Under Special Authorization
Section Study Identification Fiscal Year
Costs
18. Asotin Creek, Asotin, Idaho $793
Bear Creek, Kendrick, Idaho 5,183
Beech Creek, Mt. Vernon, Oregon 8,576
Big Wood and Little Wood Rivers, Richfield-Gooding, Idaho 14,333
Esquatzel Coulee, Mesa, Wash. 253
Lapwai Creek, Culdesac, Idaho 3,324
Lapwai Creek, Sweetwater, Idaho 5,590
Lawyers Creek, Kamiah, Idaho 575
Little Canyon Creek, Glenns Ferry, Idaho 3,343
Miscellaneous Negative Reconnaissance Reports 2,421
Lower Dry Creek, Lowden, Wash. 8,341
Payette River, Idaho - Chapman Location 305
Portneuf River, Lava Hot Springs, Idaho 3,703
Snake River, Stephens Location, Blackfoot, Idaho 11,594
South Fork Clearwater River, Kooskia-Stites Location, Idaho 17,139
Stage Gulch, Stanfield, Oreg. 7,403
Touchet River, Waitsburg, Wash. 5,497
Tucannon River, Camp Wooten, Wash. 966
Tucannon River, Starbuck, Wash. 1,518
Union Flat Creek, Uniontown, Wash. 3,553

 
Flood Control Works Under Special Authorization
Snagging and Clearing Streams
Section Project and Location Fiscal
Year
Costs		 Completed
18. Big Lost River, Idaho $29,297 February 1968

 
Summary of Status of Work on Existing and Previous Project Authorization
Section Project Project Estimated Cost (Corps of Engineers Funds Only) Total New Work Appropriations
to June 30, 1968		 Cost to June 30, 1968 Percent
Completed		 Construction
Started
New Work. Maintenance
26. Snake River Downstream from Johnson Bar Landing, Oreg., Wash., and Idaho Ice Harbor Lock and Dam¹ $153,969,000² $129,247,151 $129,040,297 $4,851,919 84 January 1956
Little Goose Lock and Dam¹ 149,000,000 107,530,100 105,879,307 — 71 June 1963
Lower Granite Lock and Dam¹ 204,000,000 24,729,823 23,781,175 — 12 July 1965
Lower Monumental Lock and Dam¹ 181,000,000 148,689,999 147,961,543 — 82 June 1961
Open River Improvement -
Lewiston to Johnson Bar Landing
 34,613 34,613³ 34,613³ 99,458    
Open River Improvement -
Pasco to Lewiston
 — — — 4,350    
Total Existing Project
 $688,003,613 $410,231,686 $406,696,935 $4,955,727    
Previous Projects - Pasco to Lewiston 400,150 400,150 400,150 400,150    
Total Authorized Projects
 $688,403,763 $410,631,836 $407,097,085 $5,142,297    
1See individual report.
2Includes $830,000 for Code 710 recreation facilities on completed project.
3Maintenance accomplished prior to 1953 with new work funds.

 
Improvements Included in Existing Project
Section Project Project Estimated Cost
(Corps Funds Only)
26. Snake River Downstream from Johnson Bar Landing, Oreg., Wash., and Idaho Ice Harbor Lock and Dam, River Mile 9.7 $153,969,000¹
Little Goose Lock and Dam 149,000,000
Lower Granite Lock and Dam 204,000,000
Lower Monumental Lock and Dam 181,000,000
Open-River Improvement - Lewiston to Johnson Bar Landing² 34,613
Total
 $688,003,613
1Includes $850,000 for Recreation Facilities on Completed Project.
2No Channel Dimensions Specified.

 
Other Authorized Multipurpose Projects
Section Name of Project For Last Full Report See Annual Report For: Cost to 30 June 1968
27. Asotin Dam, Snake River, Idaho and Washington 1964 None

 
Completed Flood Plain Studies
Section Project Location Requesting Agency Date Completed Cost
29. Collection and Study of Basic Data Richland, Wash. (Yakima River) City of Richland July 1963 $4,467
Boise, Idaho (Boise River) City of Boise and Ada County November 1967 26,958
Orofino, Idaho (Clearwater River) City of Orofino and Clearwater County May 1968 7,986

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