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<br />6 <br /> <br />e Table 3. Key flow parameters used to determine m1n1mum flow require- <br /> ments using the R-2 Cross Single Transect Method.a <br /> X y Z <br /> Stream Average Average Wetted <br /> width depth velocity perimeter <br /> (ft) (ft) (ft/sec) (%) <br /> 1 - 20 0.2 or greater 1 50 <br /> 2l - 40 0.2 - 0.4 1 50 <br /> 4l - 60 0.4 - 0.6 1 SO to 60 <br /> 61 - 100 0.6 - 1.0 1 70 "-", <br /> or greater <br /> <br />------------------------------------------------------------------- <br /> <br />aColorado rivers in excess of 100 feet in wetted perimeter are <br />judged on individual channel characteristics as related to key flow <br />parameters. Parameters ~pply to instream flow recomnendations for <br />period May to September. October to April flow recommendations will <br />be at the same level, or at the natural undepleted flow, whichever is <br />less. <br /> <br />e <br /> <br />Instream flow recommendation in cfs are selected when m1n1mum <br />levels of two or more parameters are reached within the designated <br />stream class. Average depth evaluation is based on maximum body depth <br />of largest fish present and is considered one of the most important <br />flow parameters. Body depth is defined as the distance from the tip <br />of the extended dorsal fin to the lowest portion of the body cavity. <br /> <br />e <br /> <br />- <br /> <br /> <br />- <br />