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<br />~ <br /> <br />.Cripple Creek and the Cripple Creek/Victor Mining Company, These recommendations are <br />\ discussed in detail below, <br /> <br />e <br /> <br />e <br /> <br />e <br /> <br />Instream Flow Recommendation(s) <br /> <br />I BLM's instream flow recommendation is for ]3,0 cfs (April I - October 31) & 4,5 cfs <br />(November I - May 31) (see BLM letter in Appendix A), <br />2 WWW & QR's flow recommendation is for 5,25 cfs (April I - July 31) & 3,()() cfs <br />(August I - March 31) (see WWW/QRExecutive Summary in Appendix A). <br /> <br />Land Status Review <br /> <br /> Total Length Land Ownership <br />Upper Terminus Lower Terminus (miles) % Private % Public <br />Felch Creek Wilson Creek 3,3 40% 60% <br /> <br />This segment is approximately 60% public land and 40% private land, 100% of the public land <br />is managed by the BLM (See attached Figure I), <br /> <br />Biological Data <br /> <br />The Colorado Division of Wildlife (CDOW) and BLM have conducted field surveys of the <br />fishery resources on this stream and have found a natural environment that can be preserved, In <br />this reach of stream, a coldwater fish species was sampled (brook & brown trout) to indicate the <br />existence of a natural environment (See CDOW Reports: Fremont and Teller County Aquatic <br />Community Monitoring 1994 & 1995 and 319 Assessment in Appendix B), <br /> <br />Field Survey Data <br /> <br />WWW, BLM, CDOW and CWCB staff used the R2CROSS methodology to quantify the amount <br />of water required to preserve the natural environment to a reasonable degree, The R2CROSS <br />method requires that stream discharge and channel profile data be collected in a riffle stream <br />habitat -type, Riffles are most easily visualized, as the stream habitat type that would dry up first <br />should the streamflow cease, This type of hydraulic data collection consists of setting up a <br />transect, surveying the stream channel geometry and measuring the stream discharge. Appendix <br />B contains copies of the field data collected in regards to this proposed segment. <br /> <br />Biological Flow Recommendations <br /> <br />The CWCB staff relied upon the biological expertise of the cooperating agencies to interpret the <br />output from the R2CROSS data collected to develop the initial, biologic instream flow <br />recommendation, This initial recommendation is designed to address the unique biologic <br />requirements of each stream without regard to water availability, Three instream flow hydraulic <br />parameters, average depth, percent wetted perimeter and average velocity are used to develop <br />biologic instream flow recommendations, The CDOW has determined that by maintaining these <br />three hydraulic parameters at adequate levels across riffle habitat-types, aquatic habitat in pools <br />and runs will also be maintained for most life stages of fish and aquatic invertebrates (Nehring <br />1979; Espegren 1996), <br /> <br />For this segment of stream, four data sets were collected with the results shown in Table 1 <br />below, The four surveys are listed in the order of where they are located on the segment, starting <br />from the most upstream survey to the most downstream survey, Table I shows who collected <br />the data (Party), the date the data was collected (Date), the measured discharge at the time of the <br />survey (Q), the accuracy range of predicted flows based on Manning's Equation (240% and 40% <br />