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The subject of this repoll is a 1.7 mile segment of East i\1iddle Fork of Parachute Creek beginning at the contluence of Northwater and Trapper Creeks and extending downstream to the ('onlluence with Corral Gulch, This segment is located northwest of the City of Rifle. The Bureau of Land Management (BLM) recommended this segment to the CWCB for inclusion into the Instream Flow Program. To date. slatl has received only one llow recommendation for this reach of East Middle Fork of Parachute Creek. That recommendation is discussed in detail hclow. Instream Flow Recommendation(s) I BLM's instream flow recommendation is for 5.75 cfs (April I -June 30), 2.5 cfs (July I to July 31). 1.6 cfs (August I - August 31). 1.0 cfs (September I - September 30), 0,7 cfs (October I - November 30), 0.5 cfs (Decemher I - February 29) and 1.3 cfs (!\'1arch I - March 30) (see BLM letter in Appendix A). Land Status Review Total Length Land OwnershiD Upper Terrn.inus Lower Terminus (miles) % Private % Public l\orthwalcr & Corral Gulch 1.7 33% 66% Traoocr Crceks This stream segment is 33% private land and 66% public land. Of the 66% of public land. 100% is managed by the BL!\1 (See attached Figure I), Biological Data The BLM has conducted field surveys of the fishery resources on this stream and have found a natural environment that can be preserved. As reported for this reach of stream in their September 24, 1999. letter to the CWCB and enclosed fishery surveys (See Fish Sur....ey in Appendix B). "Fishery Surveys indicate that the stream environment is in stahle condition and supports a self-sustaining Colorado River cuuhroat troUl fishery. Spawning substrate and food availability are good for salmonids. However, cover and pools are limited, underscoring the importance of adequate llows to maintain sufficiently cool stream temperatures during the summer and fall high temperature period," Field Survey Data BLM and CWCB staff used the R2CROSS methodology to quantify the amount of water required to preserve the natural environment 10 a reasonable degree. The R2CROSS method requires thai stream discharge and channel profile data be collected in a riflle stream habitat- type. Riffles are most easily visualized, as the stream habitat types that \....ould dry up first should the streamflow cease. This type of hydraulic data collection consists of selling up a transect. surveying the stream channel geometry and measuring the stream discharge. Appendix B contains copies of the field data collected in regards to this proposed segment. Biological Flow Recommendations The cweB staff relied upon the biological expertise of the cooperating agencies to interpret the output from the R2CROSS data collected to develop the initial. biologic instream flow recommendation, This initial recommendation is designed to address the unique biologic requirements of each stream I,\..'ithout regard to water availability. Three instream llow hydraulic parameters. average depth. percent wetted perimeter and average velocity are used to develop biologic instream llow recommendations. The CDOW has determined that by maintaining these