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- W2330007444 abstract "Flow regime management practices have a critical impact on the health of urban fisheries and are a potential limiting factor for instream habitat. In 2000, the South Dakota Department of Game, Fish, and Parks began a four-year study on the brown trout (Salmo trutta) fishery in Rapid Creek through Rapid City, South Dakota. As a part of this study, the stream's hydraulic habitat (depth and velocity) was simulated and analyzed using the two-dimensional model River 2D. This analysis was linked to operating procedures of Pactola Reservoir. Results are presented in the form of weighted useable area per 100 meters of stream over a range of discharges for four life stages: spawning, fry, adult and juvenile. Analysis of the results showed that the habitat availability for fry, juvenile and adult stages were comparable throughout the range of flows, with the fry stage being limiting by a small margin. Time-series analysis of the adult life stage showed that above Canyon Lake, where a limestone loss zone influences the flow regime, dry years and winter months are the limiting time periods. Below Canyon Lake the summer months and extreme wet years are critical. At high flows (discharges greater exceeding the 90-day average flow 10% of the time), mean velocities in the study area begin to exceed recommended values for resting velocities. This may cause displacement and an increase in energy expenditure. Recommendations for future management practices include assuring a minimum flow of 0.57 m 3 /s above Canyon Lake and maintaining summer flows below 3.14 m 3 /s. The conclusion of this study is that under the normal operating range (10% to 90% flow duration) of releases from Pactola, the suitability of depth and velocity habitat suitability based on depth and velocity is not adversely impacted." @default.
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- W2330007444 date "2004-06-25" @default.
- W2330007444 modified "2023-10-18" @default.
- W2330007444 title "Evaluating Flow Regime Management Using River 2D and ArcGIS" @default.
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- W2330007444 doi "https://doi.org/10.1061/40737(2004)405" @default.
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