Past Actions Taken to Assist Columbia River Salmon
RCED-92-173BR: Published: Jul 13, 1992. Publicly Released: Jul 24, 1992.
- Full Report:
Pursuant to a congressional request, GAO provided information on the types of actions and costs to maintain and restore salmon runs on the Columbia and Snake River.
GAO found that: (1) the cost of federal and state efforts to improve salmon fisheries since 1981 has been over $1.3 billion; (2) construction of fish ladders and construction and operation of fish hatcheries comprise 74 per cent of the total cost for salmon habitat and salmon research improvement; (3) 1988 hatchery operations produced about 250 million juvenile salmon, but hatchery fish are believed to negatively impact wild salmon; (4) facilities to assist salmon migration have varied in effectiveness; (5) specific species respond well to tank truck and barge transport of juvenile salmon past dams; and (6) studies of the effectiveness of improved habitat show varying results.