Supplement Analysis for the Watershed Management Program EIS (DOE/EIS-0265/SA-88) - John Day Watershed Restoration (2002-2003)
- Bonneville Power Administration (BPA), Portland, OR (United States)
BPA and The Confederated Tribes of Warm Springs Reservation of Oregon (CTWSRO), propose to complete seven types of fish habitat enhancement projects. The projects are located within bull trout and Middle Columbia River steelhead habitat. Projects include culvert removal, culvert replacement, return flow cooling, and the replacement of gravel push-up diversions by installation of permanent flat diversions, infiltration galleries, a steel plate weir, and pumping stations. Project locations are within the John Day River Watershed. Currently there are many irrigation diversion structures in the upper reach of the mainstem John Day River. These diversions are mainly gravel push-up dams, which are constructed by pushing river gravels to form a small dam across the river. These push-up dams are usually less than three feet high and somewhat porous, yet they may limit upstream and downstream migration of fish during low flow periods. Water temperatures and unsuitable habitat may also block fish movement during summer months in the section of the mainstem John Day River between Prairie City and John Day. On some lands that are flood irrigated, ditches or other systems collect tailwater from fields and return it to the river. If water is returned through open conveyance systems, which are exposed to solar radiation, they can be thermally elevated and may increase river temperatures. These return flows may serve to further degrade water quality impaired stream reaches.
- Research Organization:
- Bonneville Power Administration (BPA), Portland, OR (United States)
- Sponsoring Organization:
- USDOE Office of NEPA Policy and Assistance (EH-42)
- OSTI ID:
- 824661
- Report Number(s):
- DOE/EIS-0265/SA-88
- Country of Publication:
- United States
- Language:
- English
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