Supplement Analysis for the Watershed Management Program EIS (DOE/EIS-0265/SA-62)and the Hood River Fisheries Project Final EIS (DOE/EIS-0241)

Technical Report · Fri Sep 14 00:00:00 EDT 2001

DOI:https://doi.org/10.2172/824047· OSTI ID:824047

The project area is located on the Hood River, near river-mile 11 (Township 2 North, Range 9 East, Section 29). The Hood River flows south to north, adjacent to the project area with Joe's Creek entering on the east bank. Joe's Creek is an intermittent stream approximately 1,000 feet long on a high alluvial terrace at the base of a talus slope. Farmers Irrigation District (FID) proposes modifying the intake and flume of the irrigation district's canal in order to reduce sediment that enters the canal. The modification consists of redistributing boulders and stream bottom material to shift the existing thalweg of Hood River toward the west, away from the intake, and installing two sediment excluder sills in the upper portion of the canal. The FID also proposes installing a new transmission water line, which will replace an existing trestle and flume that presently links the irrigation district intake to a canal system that transports water into the low croplands of the Hood River Valley. In addition to the new transmission water line, a new fish screen would be constructed which necessitates a fish bypass that returns fish back to the Hood River. The existing fish screen is an older obsolete concept and the existing fish bypass consists of a small diameter flexible culvert. FID proposes a bypass system that not only returns fish to the Hood River but also increases fisheries habitat availability in the watershed. To accomplish this, a new channel would be created between the existing irrigation canal and Joe's Creek. The area of proposed new channel construction is entirely upland. Proposed alterations in Joe's Creek consist of rearing pool creation, the installation of two culverts (one under an existing road and one near the outlet to Hood River), creation of a plunge pool at the outlet of the upper culvert and a series of jump pools extending 50 feet east of the confluence with the Hood River. The existing channel would be recontoured to handle bypass flows and enhanced to provide fisheries habitat. The existing fish screen would be replaced with a new fish screen that would be constructed in a new concrete flume along the existing pipeline alignment. The new fish screen would be a horizontally oriented, 160-foot long flat plate screen, a relatively new type of screen called a Horizontal Flat Plate (HFP). The screen would be 10 feet wide at the entrance. Both of the screen sidewalls would taper evenly for 140 feet to an outlet transition throat which would typically be set to 24 inches wide. The transition throat would be of equal width throughout its 20-foot length. One of the screen sidewalls would be adjustable in order to allow for fine-tuning of the screen hydraulics and the outlet transition throat width. Water passing through the outlet transition throat would flow with a short plunge of approximately 0.7 feet to the headwater pool at the beginning of Joe's Creek, which is the fish return bypass system.

• Research Organization: U.S. Department of Energy, Bonneville Power Administration (US)
• Sponsoring Organization: USDOE Office of NEPA Policy and Assistance (EH-42) (US)
• OSTI ID: 824047
• Report Number(s): DOE/EIS-0265/SA-62; TRN: US200430%%1365
• Resource Relation: Other Information: PBD: 14 Sep 2001
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
29 ENERGY PLANNING
POLICY AND ECONOMY
FISHERIES
HABITAT
IRRIGATION
RESOURCE MANAGEMENT
RIVERS
SEDIMENTS
WATERSHEDS
ENVIRONMENTAL IMPACT STATEMENTS
OREGON
FISH PASSAGE FACILITIES
SA
HOOD RIVER FISH HABITAT PROJECT
WATERSHED MANAGEMENT
SPAWNING
REARING
HABITAT ENHANCEMENTS
RIPARIAN PLANT COMMUNITIES
ODELL
HOOD RIVER COUNTY