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EFFECTS OF WATER DRAWDOWN ON THE FAUNA IN SMALL COLD WATER RESERVOIRS 1
Author(s) -
McAfee Mary E.
Publication year - 1980
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1980.tb02450.x
Subject(s) - drawdown (hydrology) , invertebrate , fauna , environmental science , hydrology (agriculture) , drainage , water level , abundance (ecology) , structural basin , geology , ecology , groundwater , aquifer , biology , geography , geotechnical engineering , geomorphology , cartography
Two small cold water reservoirs with stable water levels were compared with two reservoirs scheduled for complete drawdown to determine the effects of drawdown on invertebrate abundance and fish abundance and density. An extensive literature review supplemented the results with other applicable information. No conclusive evidence of effects of drawdown on invertebrates or fish was found. Characteristics of a reservoir and its drainage basin which obscure or lessen drawdown effects are discussed. Analysis and observation of drawdown procedures showed that duration and scheduling of draw‐down periods are important in determining whether drawdown will be harmful to fauna in a given reservoir.