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<br />(Miller and Dees 1997). <br /> <br />Habitat composition was simulated incrementally with flow using the RHABSIM (habitat <br />simulation) software package (Payne 1995). RHABSIM is a newer revision of the PHABSIM <br />methodology developed by USFWS (Bovee and Milhous 1978). Stage/discharge relationships were <br />determined using either the manning equation or the step-back hydraulic method included in the <br />software package. <br /> <br />Table 3.-Habitat types used to characterize the Yampa River during low flow conditions. <br /> <br />Name/Type Depth (m) Velocity (m/s) Species Use <br />Class I Pool > 2.0 0.0 to 0.\ Adult Colorado squawfish <br />Class \I Pool 1.0 to 1.99 0.0 to 0.1 Adult Colorado squaw fish <br />Shallow Pool < 1.0 0.0 to 0.1 na <br />Deep Run > 0.8 0.1 to 0.625 Adult Colorado squaw fish <br />Shallow Run 0.0 to 079 0.1 to 0.625 na <br />Fast Rime > 0.0 > 0.625 na <br /> <br />Results <br /> <br />Cluster Locations <br /> <br />Eleven clusters were measured in 1996, one in strata 2, two in strata 3, two in strata 4, and four <br />in strata 6, and two in strata 8. Locations, dates. measured flow and flow recorded at the Maybell <br />gage is given in Table 4. In general the measured flow was higher than the gage. The Maybell <br />diversion is located at River Mile 89.5 and typically diverts up to 100 cfs. The Maybell gage is <br />located at river mile 85.8. <br /> <br />Table 4.-Comparison of flow tram the Maybell gage to flow measured at each habitat cluster <br />location, Yampa River. Colorado. 1996. <br /> <br /> Field Gauge <br /> Habitat River flow Flow <br />Strata Cluster Mile (cfs) (efs) Date <br />" 1 239 329.5 383 Il!06/96 <br />L <br /> ; <br />0 , i 45.5 3990 433 10/22/96 <br />j , <br /> <br />20 <br />