7344

• 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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REPORT DOCUMENTATION 11. REPORT NO. 12. 3. Recipient's Accession No.
PAGE
4. Title and Subtitle 50 Report Date
IMPACT OF RESERVOIR-DEVELOPMENT ALTERNATIVES ON STREAMFLOW March 1QR?
QUANTITY IN THE YAMPA RIVER BASIN, COLORADO AND WYOMING 6.
7. Author(s) 8. Performins Orsanization Rept. No.
Jack E. Veenhuis and Donald E. Hill i er USGS/WRI 80-113
9. Perform ins Ol1lanization Name and Address U. S. Geological Survey 10. Project/Task/Work Unit No.
Water Resources Division
Box 25046, Mai 1 Stop 415 11. Contract(C) Or Grant(G) No.
Denver Federal Center (C)
Lakewood, CO 80225 (G)
12. Sponsorins Orsanization Name and Address U. S. Geological Survey 13. Type of Report & Period Covered
Water Resources Division Final
Box 25046, Ma i 1 Stop 415
Denver Federal Center 14.
I r(\ Q(\')')c
15. Supplementary Notes , -;
16. Abstract (limit: 200 words) In the Yampa River basin, Colorado-Wyoming, 35 ma j 0 r reservoirs and
2 transmountain diversions have been proposed to provide additional water for increasing
uses. A multi reservoir-flow computer model was used to simulate effects on streamflow of
five potential options--one representing historical conditions and four representing var i-
ous degrees of reservoir and transmountain-diversion development. Various combinations of
17 proposed reservoirs and 2 transmountain diversions were used. Varying percentages (25,
50, 75, and 100 percent) of hypothetical agricul tural and transmountain diversions wi th i n
each proposed reservoir-development option were simulated for different degrees of wa te.r
use, providing results for alternatives.
The proposed Vidler transmountain diversion would affect streamflow only in the Yampa
River subbasin while the proposed addition to the Hog Park transmountain diversion would
affect streamflow primarily in the L i ttl e Snake River subbasin. Streamflow in the Yampa
River tributaries could be relatively unaffected by the Vidler transmountain diversion,
although streamflow could be affected to some degree in all reaches of the Yampa River
downstream from the proposed diversion site.
More uniform flow regimens during the year could result from some proposed options.
However, ex j s t i ng ( 1979) minimum streamflows would not be maintained in many instances,
and for many months, wi th the larger percentage of water-use all oca t i on , there could be
no streamflow.
17. Document Analysis a. Descriptors
Reservoir simulation, Reservoir deve 1 opmen t, Routing, Simulation, Computer model,
Minimum flow, Instream flow
b. Identlfiers/Open.Ended Terms
Yampa River, Little Snake River, Colorado
c. COSATI Field/Group
18. Availability Statemen: 19. Security Class (This Report) 21. No. of Pases
No restriction distribution 81 --
on 20. Security Class (This Pase) 22. Price

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