PROJ01918 ‎(2)‎

• Contract/PO #: FS0077FX
• Contract Type: Grant
• Water District: 0
• Loan Projects - Doc Type: Feasibility Study

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Transferable Water Based on Senior Decreed Water Ri2hts and Cow Creek Flows:

To account for Cow Creek flows, additional flow proportional to one-half of Cow Creek's basin
area was added to Leroux Creek inflows. The basin of Cow Creek is approximately 1,100 feet
lower in elevation and the area is 16 percent of the Leroux basin area above gauge 1345. To
account for the difference in elevation, additional flows from Cow Creek were assumed to be 8
percent of Leroux Creek inflows, and total monthly flows at Leroux Creek were increased by 8
percent to account for Cow Creek flows. The 355 cfs decreed water rights were subtracted from
the resulting total flow to estimate transferable monthly water. Transferable water was assumed
to be zero if total flow was less than the decreed water rights of 355 cfs. In addition, the
maximum allowable amount of transferable water was limited to the conditional water right of
260 cfs held by the GMWCD. Using these assumptions Table 8 shows that water was
transferable 10 percent of the time and an average of 1,750 acre-feet was transferable based on
the monthly runoff data between the years of 1970 and 2001.

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