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Last modified
8/11/2009 11:32:56 AM
Creation date
8/10/2009 3:23:28 PM
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UCREFRP
UCREFRP Catalog Number
7344
Author
Veenhuis, J. E. and D. E. Hillier.
Title
Impact of Reservoir-Development Alternatives on Streamflow Quantity in the Yampa River Basin, Colorado and Wyoming.
USFW Year
1982.
USFW - Doc Type
Lakewood, Colorado.
Copyright Material
NO
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<br />DATA AVAilABILITY <br /> <br />Streamflow Records <br /> <br />Daily streamflow records from 36 streamflow-gaging stations, unadjusted for <br />changes in water use (figs. 2 and 3), were used to compute mean monthly and mean <br />annual streamflow at the stations for water years 1910-76. Data for periods of no <br />record were synthesized using a least-error, linear-regression technique (A. W. <br />Burns, U.S. Geological Survey, written commun., 1976). Either measured streamflow <br />data or a combination of measured and synthesized streamflow data were used to de- <br />termine what is termed in this report as "historical conditions" for the model- <br />analysis period (water years 1927-76). The resulting streamflow data were used <br />to: (1) Determine incremental inflows to proposed reservoirs, and (2) determine <br />incremental inflows between all other control points for the 1927-76 model- <br />analysis period. <br /> <br />Precipitation Records <br /> <br />Monthly precipitation records for water years 1910-76 for climatological sta- <br />tions operated by the National Weather Service at Columbine, Craig, Hayden, Pyra- <br />mid, and Steamboat Springs, Colo., and Dixon,Wyo. (fig. 2) , were used in the <br />reservoir analysis. Data for periods of no record were synthesized using a least- <br />error, linear-regression technique (A. W. Burns, U.S. Geological Survey, written <br />commun., 1976). <br /> <br />Evaporation Records <br /> <br />Few evaporation data are available for the Yampa River basin. For this <br />reason, monthly evaporation rates determined for reservoirs in the vicinity of <br />Denver, Colo. (Ficke and others, 1976), were used in the reservoir analysis. <br />Monthly evaporation rates for a reservoir in the Yampa River basin were selected <br />from the data in table 1, based on a comparison of geometric characteristics <br />between one of the Denver-vicinity reservoirs and the reservoir of interest in the <br />Yampa River basin. In many instances, the evaporation rates had to be estimated <br />for November through March because ice cover prevented the collection of data <br />(N. E. Spahr, U.S. Geological Survey, written commun., 1977). <br /> <br />4 <br />
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