7962

• UCREFRP Catalog Number: 7962
• Author: Wolz, E. R. and D. K. Shiozawa.
• Title: Benthic Invertebrates from the Green River, UT, Benthic Macroinvertebrate Communities of the Green River, at the Ouray National Wildlife Refuge - master's theses.
• USFW Year: 1993.
• USFW - Doc Type: Brigham Young University,
• Copyright Material: NO

during our study.
River backwater: River backwaters are submerged during high flows and do not
emerge as distinct entities until the river drops. For this reason, the river backwater was
not sampled during peak flow (June). The river backwater we sampled was located just
upstream of the river channel site described above and was approximately 10 m wide x
50 m long and 1.3 m deep. The substrate consisted mostly of loose silt and detritus with
virtually no sand. Silt and det-itus were constantly being deposited during the study
period.
Seasonally inundated Wetland: This site is commonly called "Old Charlie's Wash".
It is a shallow floodplain pond managed by the United States Fish and Wildlife Service
for waterfowl and is located approximately ?km south of the U.S.F.W.S hatchery. As
the river level rises in the spring, water flows into "Old Charlies Wash" and, at peak
flow, retaining structures are put in place creating a 43 hectare lake and preventing the
impounded water from receding as rapidly as the river itself. By early fall, the water
in "Old Charlie's Wash" is nearly depleted by seepage and evaporation. The substrate
consisted of firm silt, detritus, and sand.
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