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<br />Table 1: Data
<br />Part
<br />DOW/CWCB
<br />
<br />
<br />Winter 2/3
<br />0.8
<br />
<br />Date
<br />10/09/96
<br />
<br />Q
<br />0.70
<br />
<br />250%-40%
<br />1.7 - 0,3
<br />
<br />BLM = Bureau of Land Management DOW = Division of Wildlife
<br />(I) Predicted flow outside of the accuracy range of Manning's Equation,
<br />
<br />CWCB = Colorado Water Conservation Board
<br />? = Criteria never met in R2CROSS Staging Table.
<br />
<br />Biologic Flow Recommendations
<br />The CD OW recommended a 1.1 cfs summer flow and a 0,8 cfs winter flow based on the October
<br />9th, 1996, data collection efforts,
<br />
<br />Staff reviewed the data collected by the CDOW. The summer flow recommendation for the
<br />reach, which meets 3 of 3 criteria and is within the accuracy range of the R2CROSS model is 1,1
<br />cfs, The winter flow recommendation for the reach, which meets 2 of 3 criteria and is within the
<br />accuracy range ofthe R2CROSS model is 0,8 cfs (See Table 1).
<br />
<br />Hydrologic Data
<br />
<br />After receiving the cooperating agency's biologic recommendation, the CWCB staff conducted
<br />an evaluation of the stream hydrology to determine if water was physically available for an
<br />instream flow appropriation. There are no currently operated or historically operated
<br />streamflow gages for this reach. The closest gage CWCB staff found was the gage located on the
<br />San Miguel River 8.5 miles north of the Lizard Head Creek drainage. The hydro graph below was
<br />derived from data collected by the USGS stream gage for the San Miguel River near Telluride,
<br />CO (ID #09171200), which has a drainage area of 42.8 square miles. The drainage area of
<br />Lizard Head Creek is approximately 3.0 square miles, Staff used a basin apportionment method
<br />to estimate stream flows for Lizard Head Creek (See Gage Summary in Appendix C). The
<br />period of record for this gage was 1959 to 1965, the period of record used by staff in their
<br />analysis was 1959 - 1965, or six years of record. Table 2 below displays the estimated flow of
<br />Lizard Head Creek, in terms of a percentage of exceedence.
<br />
<br />Table 2:
<br />
<br />Estimated Lizard Head Creek Stream Flow
<br />Exceedences
<br />1%
<br />5%
<br />10%
<br />20%
<br />50%
<br />80%
<br />90%
<br />95%
<br />99%
<br />
<br />January February March ADril Mav June July August Septem ber October November December
<br />1,28 1.43 3.60 7.44 28,83 33.38 29.71 14.65 6,60 3.44 2,38 1,64
<br />1.21 1,35 2,19 6.41 24,87 29,57 25.54 8.60 5,20 2.83 2.07 1,43
<br />1.14 1,35 1,67 5,56 17.02 25.65 19,15 6,71 4.63 2.71 2.00 1.35
<br />1,14 1.28 1.43 4,35 13.17 22.09 14.34 5.42 3,99 2,35 1,85 1.28
<br />1,07 1.07 1.14 2.49 8.48 16.53 6.91 3.63 2.64 1.92 1,57 1.21
<br />1.00 1,00 1.00 1,57 4.99 9.41 3.92 2.78 1,92 1,64 1,43 1.14
<br />0.93 1.00 1.00 1,14 3.11 8.27 3,18 2,35 1.85 1.57 1.35 1.14
<br />0,93 1.00 1,00 1.14 2.59 7.13 2.87 2.07 1,78 1,57 1,35 0.93
<br />0.93 1.00 0.86 1,13 2.07 5.74 2.33 1.92 1,71 1.50 1.28 0.93
<br />
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