Hydrologic Modification for Habitat Improvement in the Finger Lakes: Pre-ProjectReport Number 3, 1994

摘要

The Finger Lakes Habitat Rehabilitation and Enhancement Project (HREP) isintended to improve winter habitat conditions for fish in a series of interconnected backwater lakes of the Mississippi River near Alma, Wisconsin. Winter habitat requirements (temperature, flow velocity, and dissolved oxygen) for the target fish population in the Finger Lakes have been defined and limnological efforts have been aimed at quantifying the spatial-temporal patterns and interrelationships among water movement, oxygen, and temperature. The progress to date (preconstruction) has included detailed investigations into (1) system hydrology (including dye-tracer studies), (2) oxygen supply and depletion, (3) temperature regime, (4) aquatic vegetation distribution, composition, and abundance, (5) macroinvertebrates, and (6) target fish species movements and food base. The report is the third in a series addressing preconstruction conditions. The report summarizes results of studies conducted during 1993.