Hells Canyon Environmental Investigation, 1984.

Technical Report · Sun Jul 01 00:00:00 EDT 1984

OSTI ID:6869317

CH2M Hill, Inc.

The results of an environmental investigation of the nonpower impacts on the Hells Canyon Complex resulting from water budget participation are presented. The water budget plan would increase flows in the Columbia and Snake Rivers between April 15 and June 15 to improve survival of migrating salmon and steelhead. The study was conducted using existing data and consultation with agencies with responsibilities in the project area. Three scenarios, drawdown of Brownlee Reservoir to 3 elevations (2036, 2050 and 2065) were evaluated. The models used to develop the scenarios drafted Brownlee Reservoir only during May, and reduced outflows to the minimum permitted during June and July to accommodate refilling the reservoir. The scenarios showed that only May, June and July would be affected. A flow duration approach was used to compare each scenario with the existing conditions. A total of nine discipline areas were studied. These include natural features (geology); water use; water quality; fish, botanical, and wildlife resources; air quality; land use; historical and archaeological resources; recreational resources; and aesthetic resources. Within each discipline, the report presents the existing conditions, the potential impacts associated with each scenario, information deficiencies and needed studies. 171 references, 18 figures, 45 tables.

• Research Organization: CH2M Hill, Corvallis, OR (USA)
• Sponsoring Organization: United States. Bonneville Power Administration.
• DOE Contract Number: 1983BP11548
• OSTI ID: 6869317
• Report Number(s): DOE/BP-274; ON: DE84015992
• Resource Relation: Other Information: Portions are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

29 ENERGY PLANNING
POLICY AND ECONOMY
54 ENVIRONMENTAL SCIENCES
WATER RESERVOIRS
DRAWDOWN
AESTHETICS
AIR QUALITY
ARCHAEOLOGICAL SITES
COLUMBIA RIVER
DATA COMPILATION
ENVIRONMENTAL EFFECTS
FEDERAL REGION X
FISHES
GEOLOGY
LAND USE
PLANTS
RECREATIONAL AREAS
WATER QUALITY
WILD ANIMALS
ANIMALS
AQUATIC ORGANISMS
DATA
ENVIRONMENTAL QUALITY
INFORMATION
NORTH AMERICA
NUMERICAL DATA
RIVERS
STREAMS
SURFACE WATERS
USA
VERTEBRATES
Environmental impact analysis - Hells Canyon (Or. and Idaho)
530200* - Environmental-Social Aspects of Energy Technologies- Assessment of Energy Technologies- (-1989)
520500 - Environment
Aquatic- Site Resource & Use Studies- (-1989)