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Downstream effects of Flaming Gorge Reservoir on the Green River, Colorado and Utah

1986; Geological Society of America; Volume: 97; Issue: 8 Linguagem: Inglês

10.1130/0016-7606(1986)97 2.0.co;2

1943-2674

E. D. Andrews,

Soil erosion and sediment transport

Research Article| August 01, 1986 Downstream effects of Flaming Gorge Reservoir on the Green River, Colorado and Utah E. D. ANDREWS E. D. ANDREWS 1U.S. Geological Survey, Water Resources Division, Box 25046 M.S. 413, Denver Federal Center, Denver, Colorado 80225 Search for other works by this author on: GSW Google Scholar GSA Bulletin (1986) 97 (8): 1012–1023. https://doi.org/10.1130/0016-7606(1986)97 2.0.CO;2 Article history first online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation E. D. ANDREWS; Downstream effects of Flaming Gorge Reservoir on the Green River, Colorado and Utah. GSA Bulletin 1986;; 97 (8): 1012–1023. doi: https://doi.org/10.1130/0016-7606(1986)97 2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract The Green River is one of the principal tributaries in the Colorado River basin and drains 44,700 m2 in Wyoming, Colorado, and Utah. Since October 1962, flows of the Green River have been regulated by Flaming Gorge Reservoir, which is located 412 river miles upstream from its confluence with the Colorado River. Mean annual runoff has not been affected by the reservoir. The duration of the relatively large discharges that transport most of the annual sediment load, however, has decreased significantly. As a result, the mean annual sediment discharge has decreased by 54% to 3.21 × 106 tons from 6.92 × 106 tons at the Jensen gage located 105 river miles downstream from the reservoir and by 48% to 8.83 × 106 tons from 17.0 × 106 tons at the Green River, Utah, gage located 290 river miles downstream from the reservoir. Sediment supply to I he channel equals the annual transport within a relatively short distance, 68 river miles, downstream from the reservoir. Downstream from river mile 166, the supply of sediment from upstream plus tributary inflow exceeds the transport of sediment by ∼5.4 × 106 tons per year on an average. The quasi-equilibrium that appears to have existed prior to the reservoir no longer occurs along a majority of the Green River.In response to the reduced peak discharges, the bankfull channel width of the Green River has decreased by ∼10%. Adjustment of the channel to decreased peak flows and altered sediment loads is nowhere complete. At present, it appears that a century or more will be required for the Green River to adjust to the effects of Flaming Gorge Reservoir. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.