Fish distribution studies near N Reactor, Summer 1983

Technical Report · Fri Jun 01 00:00:00 EDT 1984

DOI:https://doi.org/10.2172/10117843· OSTI ID:10117843

Dauble, D D; Page, T L

This report summarizes field studies that were initiated in July 1983 to provide estimates of the relative distribution of late-summer outmigrant juvenile salmonids and juvenile resident fish upstream of the N Reactor 009 Outfall. Chinook salmon are among the fish species most sensitive to thermal effects, and impacts to the juvenile outmigrant populations are of particular concern to state and federal regulatory and fisheries management agencies. Therefore, the distribution studies were conducted from late July through September, a period when high ambient river temperatures and low river flows make these salmonid populations most susceptible to thermal effects. In addition, data were not available on the spatial distribution of outmigrant juvenile chinook salmon in late summer. Information on the relative distribution of resident fish populations was also gathered. Previous studies of midstream distribution of juvenile resident fish were limited to a description of ichthyoplankton populations (Beak Consultants, Inc. 1980 Page et al. 1982), and no data were available on vertical or horizontal distribution of juvenile resident fish species near N Reactor. Relative densities and spatial distribution estimates of juvenile salmonid and resident fish species will be used in conjunction with laboratory thermal effects studies (Neitzel et al. 1984) and with plume characterization studies (Ecker et al. 1983) to assess potential impacts of thermal discharge on fish populations near N Reactor.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 10117843
• Report Number(s): PNL-4988; ON: DE95006508; TRN: AHC29509%%70
• Resource Relation: Other Information: PBD: Jun 1984
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
N-REACTOR
ENVIRONMENTAL IMPACTS
THERMAL EFFLUENTS
SALMON
SENSITIVITY
COLUMBIA RIVER
THERMAL POLLUTION
COMPILED DATA
POPULATION DYNAMICS
SPATIAL DISTRIBUTION
ENVIRONMENTAL TRANSPORT
WATER POLLUTION
220503
210300
560200
CHEMICAL AND THERMAL EFFLUENTS
POWER REACTORS
NONBREEDING
GRAPHITE MODERATED
THERMAL EFFECTS