||Aquatic habitat indicators and their application to water quality objectives within the Clean Water Act /
Bauer, Stephen B. ;
Bauer, Stephen Bernard. ;
Ralph, S. C.
||Environmental Protection Agency, Seattle, WA. Region X. ;Idaho Univ., Moscow. Water Resources Research Inst.
|| United States Environmental Protection Agency Region 10,
Water quality management--United States. ;
Indicators (Biology) ;
Water quality--United States. ;
Water--Pollution--Law and legislation--United States. ;
Quality of water--Biological indicators
United States.--Federal Water Pollution Control Act. ;
Pacific Northwest(US) ;
Water qaulity ;
Clean Water Act ;
Environmental monitoring ;
Aquatic habitats ;
Fresh water ;
Lotic environment ;
Riparian waters ;
Channel morphology ;
Stream flow ;
Water temperature ;
Biological communities ;
Man environmental interactions ;
Biological effects ;
Aquatic habitat indicators ;
||Region 3 Library/Philadelphia, PA
||Region 9 Library/San Francisco,CA
||Region 10 Library/Seattle,WA
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||99 p. : ill., maps ; 27 cm.
||The objective of this paper is to evaluate the application of aquatic habitat variables to water quality objectives under authority of the Clean Water Act (CWA). The project is limited to freshwater, lotic aquatic habitats in the Pacific Northwest and Alaska with an emphasis on salmonid habitat. Habitat variables were placed into one of the following categories - flow regime, habitat space, channel structure, substrate quality, streambank condition, riparian condition, temperature regime, and habitat access. Candidate habitat variables were evaluated for their relevance to the biotic community, responsiveness to human impacts, applications to target landscapes, and measurement reliability. The most critical obstacles for use of habitat variables at the regional level (state specific water quality criteria for Region 10 EPA) are the quantification of biological effect and the unreliability of the unreliability of the measurement system.
||"This document was developed for the US Environmental Protection Agency, Region 10, Seattle Washington, with the Idaho Water Resources Institute, University of Idaho." Includes bibliographical references (p. 70-77).
||Prepared in cooperation with Idaho Univ., Moscow. Water Resources Research Inst.
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|Corporate Au Added Ent
||United States. Environmental Protection Agency. Region X.; Idaho Water Resources Research Institute.
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||PC A07/MF A02
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||01525cam 2200361Ia 45020