ABSTRACT:An application is described of the branch‐network flow model, BRANCH, to the upper Alabama River system in central Alabama. The model is used to simulate one‐dimensional unsteady flows and water surface elevations in approximately 60 river miles of the Alabama River system. Preliminary calibration was made using 72 hours of observed data. Simulated discharges are about 10 percent lower than observed discharges at higher discharge rates and computed flows lag observed flows by about 30 minu
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