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Transit losses and traveltimes of reservoir releases along the Arkansas River from Pueblo Reservoir to John Martin Reservoir, southeastern Colorado

Water-Resources Investigations Report 78-75

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Abstract

The volumes of reservoir releases are decreased or delayed during transit by bank storage, channel storage, and evaporation. Results from a computer model, calibrated by a controlled test release from Pueblo Reservoir, Colo., indicate that transit losses are greatest for small releases of a short duration when made during periods of low Antecedent streamflow. For equivalent releases, transit losses during the winter are about 7 percent less than losses during the summer. Based on available streamflow records, the velocity of reservoir releases ranges from about 0.6 miles per hour at the downstream end of the study reach, when antecedent streamflow is 10 cubic feet per second, to about 6.8 miles per hour at the upstream end of the study reach, when antecedent streamflow is 3,000 cubic feet per second. Consequently, the traveltime of a release increases as antecedent streamflow diminishes. Management practices that may be used to benefit water users in the study area include selection of the optimum time, rate, and duration of a reservoir release to minimize the transit losses, determination of an accurate traveltime, and diversion at several incremental rates. (Woodard-USGS)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Transit losses and traveltimes of reservoir releases along the Arkansas River from Pueblo Reservoir to John Martin Reservoir, southeastern Colorado
Series title:
Water-Resources Investigations Report
Series number:
78-75
Edition:
-
Year Published:
1978
Language:
ENGLISH
Publisher:
U.S. Geological Survey, Water Resources Division,
Description:
iv, 30 p. :ill., maps ;26 cm.