WSP12053 - Laserfiche WebLink

Home Browse Search

nn"'~r'7 uut,O\.J 1. Report No. BIBLIOGRAPHIC DATA SHEET ~. Title aod Subtitle PRESENT AND POTENTIAL SEDIMENT YIELDS IN THE YAMPA RIVER BASIN, COLORADO AND WYOMING 2, 3. Recipieot.s Accession No. S. Report Date December 1978 6, 7. Author(s) Edmund D, Andrews 9. Performing Organization Name and Address U.S. Geological Survey, Water Resources Division Denver Federal Center, Box 25046, Mail Stop 415 Lakewood, Colorado 80225 8. Performing Organization Repr. No, USGS/WRI 8-105 10. Project/Task/Work Unit No. 11. Contract/Grant No. 12. Sponsoring Organization Name and Address U.S. Geological Survey, Water Resources Division Denver Federal Center, Box 25046, Mail Stop 415 Lakewood, Colorado 80225 13. Type of Report Be Period Covered Final 14, 15. Supplementary Notes 16. Abstracts Average annual suspended- and total-sediment loads in streamflow were deter- mined by the flow-durati'on sedi"ment-transport-curve method at 18 sites in the Yampa Riv- er basin, Colorado and Wyoming. These computations indicate that about 2.0 million tons (1,8 million metric tons) of sediment are carried by the Yampa River at Deerlodge Park during an average year. Significant area'l differen~es in the sediment yield from vari- ous parts of the basin also were determined. The lower Little Snake River subbasin con- tributes about 60 percent of the total basin sediment yield, although it represents less than 35 percent of the area and supplies less than 3 percent of the streamflow. In con- trast, the upland (eastern) one-third of the basin contributes only about 14 percent of the sediment yield but 76 percent of the streamflow. Projected economic development of the basin, especially surface mining of coal, will impact the physical environment. Depending upon the amount and location of land disturbed, an estimated 10,000 to 30,000 tons per year (9,000 to 27,000 metric tons per 7. Key Words and Document Analysis. 170. Descriptors Colorado, Development, Energy conversion, Mining, River-basin planning, Sedimentation, Sediment load, Sediment yield, Wyoming 17b. Identifiers/Open.Ended Terms Yampa River basin (COlo.-Wyo.) 17c. COSA TI Field/Group 18. Availability Statement 19.. Security Class (This Report) 2 . Secumy Class (This Page UNCLASSIFIED THIS FORM MAYBE REPRODUCED 21. .No. of Pages 8 No restriction on distribution 22. Price FORM NTI$-SIl tREV. 10'731 ENDORSED BY ANSI AND UNESCO. USCOMM_PC 82615-1"7" ';'"