Wildlife and Wildlife Habitat Loss Assessment at Detroit Big Cliff Dam and Reservoir Project, North Santiam River, Oregon, 1985 Final Report.
A habitat based assessment was conducted of the US Army Corps of Engineers' Detroit/Big Cliff Dam and Reservoir Project (Detroit Project) on the North Santiam River, Oregon, to determine losses or gains resulting from the development and operation of the hydroelectric-related components of the project. Preconstruction, postconstruction, and recent vegetation cover types at the project site were mapped based on aerial photographs from 1939, 1956, and 1979, respectively. Vegetation cover types were identified within the affected area and acreages of each type at each time period were determined. Ten wildlife target species were selected to represent a cross-section of species groups affected by the project. An interagency team evaluated the suitability of the habitat to support the target species at each time period. An evaluation procedure which accounted for both the quantity and quality of habitat was used to aid in assessing impacts resulting from the project. The Detroit Project extensively altered or affected 6324 acres of land and river in the North Santiam River drainage. Impacts to wildlife centered around the loss of 1,608 acres of conifer forest and 620 acres of riparian habitat. Impacts resulting from the Detroit Project included the loss of winter range for black-tailed deer and Roosevelt elk, and the loss of year-round habitat for deer, river otter, beaver, ruffed grouse, pileated woodpecker, spotted owl, and many other wildlife species. Bald eagle and osprey were benefited by an increase in foraging habitat. The potential of the affected area to support wildlife was greatly altered as a result of the Detroit Project. Losses or gains in the potential of the habitat to support wildlife will exist over the life of the project.
- Research Organization:
- Oregon Department of Fish and Wildlife (ODFW)
- Sponsoring Organization:
- United States. Bonneville Power Administration.
- DOE Contract Number:
- 1984BP18969
- OSTI ID:
- 5555409
- Report Number(s):
- DOE/BP-18969-4; P103346
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
Similar Records
Wildlife and Wildlife Habitat Loss Assessment Summary at Federal Hydroelectric Facilities; Willamette River Basin, 1985 Final Report.
Wildlife and Wildlife Habitat Loss Assessment at Hills Creek Dam and Reservoir Project, Middle Fork Willamette River, Oregon, 1985 Final Report.
Related Subjects
HYDROELECTRIC POWER PLANTS
ENVIRONMENTAL EFFECTS
WILD ANIMALS
HABITAT
DAMS
OREGON
TERRESTRIAL ECOSYSTEMS
WATER RESERVOIRS
ECOSYSTEMS
FEDERAL REGION X
NORTH AMERICA
POWER PLANTS
SURFACE WATERS
USA
Habitat (Ecology) - Oregon - North Santiam River Watershed - Modification
130600* - Hydro Energy- Environmental Aspects