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Last modified
8/11/2009 11:32:56 AM
Creation date
8/10/2009 3:24:30 PM
Metadata
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UCREFRP
UCREFRP Catalog Number
7346
Author
Wick, E. J. and J. A. Hawkins.
Title
Colorado Squawfish Winter Habitat Study, Yampa River, Colorado 1986-1988.
USFW Year
1989.
USFW - Doc Type
Fort Collins, Colorado.
Copyright Material
NO
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<br /> <br />Maybell (RMI 82-70) <br />This river reach passes thzvugh pre?inantly irrigated agricultural <br />land. However, the river is less impacted by man-made structures. The upper <br />section at RMI 81.4 has long stretches of run habitat with quiet vegetated ' <br />shoreline, with eddys occurring along the shorelines. Downstream at M 81.1 <br />is a large embayment created by a point bar which angles downstream along the <br />right shoreline (Figure 3). The river current is directed away from 100m of <br />quiet vegetated shoreline. Further downstream at RMI 80.8, a sharp meander ' <br />creates a 13-14 feet deep pool. Other large pools with associated eddys occur <br />at Ms 79, 77, 76 and 71.6. <br />The Maybell river reach has a diverse mixture of fall and winter habitat , <br />types consisting of deep pools, eddys, vegetated embayments and shorelines. <br />High-water habitat is not as abundant as it is in the Government Bridge <br />area. Flooded tributary streams, irrigation returns, and shoreline vegetation <br />are frequently used by squawfish as are eddys at island tips during the run- <br />off period (Wick et al. 1986). <br />Lily Park (III 54-51) , <br />This river segment contains more quality pool and eddy habitat per mile <br />than any river segment on the upper Yampa River. The upper portion (FM 54- <br />53) has high-gradient riffles which cut deep (8-15 foot) pools and eddys. <br />From M 53-52.5 there is a long run-pool sequence with large boulder <br />substrates. This segment also has some low--velocity shoreline embayments <br /> <br />behind boulder jetties. Just above County Road 24 Bridge at M 52.5, the ' <br />river braids into several side channels which contain some small eddy habitat. <br />Below the bridge, the river slows and substrate size decreases to small gravel <br />and sand. Several side channel backwaters and eddy habitats are located in , <br />lower portions of the study area. <br />High-flow runoff habitat consists only of large eddys in the upper <br />portion of this area. During the spring, high flows create low-gradient side ' <br />channels and flooded backwaters in'the lower portion of the area. The Little <br />snake River enters the Yampa at m 51. <br /> <br /> <br /> <br />1 <br /> <br />6 1 <br />
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