Environmental Assessment : Squawfish Management Program : Final.

Technical Report · Fri May 01 04:00:00 EDT 1992

DOI:https://doi.org/10.2172/7066392· OSTI ID:7066392

Bonneville Power Administration (BPA) proposes to decrease the number of northern squawfish (Ptychocheilus oregonensis) in reservoirs in the Columbia River system. The goal of the Squawfish Management Program is to reduce losses of outmigrating juvenile salmon and steelhead (salmonids) to northern squawfish predation. The objective is to reduce the number of northern squawfish that feed on juvenile salmonids (smolts) by 10 to 20 percent to alter the age and size structure of the northern squawfish population. The hypothesis, based on computer modeling, indicates that sustained northern squawfish harvest (5 to 10 years) and the resultant population restructuring may reduce losses of juvenile salmonids to predation by up to 50 percent or more within 10 years. The proposed action would target northern squawfish 11 inches and longer, the size in which northern squawfish being preying significantly on juvenile salmonids. BPA proposes to fund three types of fisheries to harvest northern squawfish. BPA also proposes to fund monitoring activities of these fisheries to determine whether desired or other results occur. The three fisheries methods proposed are: (1) commercial Tribal fishing; (2) sport reward fishing; and (3) fishing from restricted areas of each dam ( dam angling''). These fisheries were tested in 1990 and 1991.

• Research Organization: USDOE Bonneville Power Administration, Portland, OR (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• OSTI ID: 7066392
• Report Number(s): DOE/BP-1827; DOE/EA--0512; ON: DE92017861
• Country of Publication: United States
• Language: English

Related Subjects

13 HYDRO ENERGY
130600* -- Hydro Energy-- Environmental Aspects
54 ENVIRONMENTAL SCIENCES
540250 -- Environment
Terrestrial-- Site Resource & Use Studies-- (1990-)
550100 -- Behavioral Biology
59 BASIC BIOLOGICAL SCIENCES
ADULTS
AGE GROUPS
AMERICAN INDIANS
ANADROMOUS FISHES
ANIMALS
AQUATIC ORGANISMS
BONNEVILLE POWER ADMINISTRATION
COLUMBIA RIVER
ECONOMIC IMPACT
ENVIRONMENTAL IMPACTS
ENVIRONMENTAL QUALITY
FISHERIES
FISHES
GRANTS
HABITAT
HUMAN POPULATIONS
HYDROELECTRIC POWER PLANTS
JUVENILES
LAWS
LEGISLATION
MANAGEMENT
MIGRATION
MINORITY GROUPS
NATIONAL ORGANIZATIONS
Northern pikeminnow - Control
POPULATION DYNAMICS
POPULATIONS
POWER PLANTS
PREDATOR-PREY INTERACTIONS
PROGRAM MANAGEMENT
RIVERS
SNAKE RIVER PLAIN
STREAMS
SURFACE WATERS
US DOE
US NATIONAL ENVIRONMENTAL POLICY ACT
US ORGANIZATIONS
VERTEBRATES