11 ‎(2)‎

• Board Meeting Date: 11/18/2007
• Description: ISF Section - Contested Instream flow Appropriation Hearing - Badger Creek
• Board Meetings - Doc Type: Memo

Figure 1--Estimated Stream Flow on Badger Creek
Badger Creek Discharge (adjusted for existing rights), Existing ISF, & Proposed Enlarged (Total) ISFs
tsao
taco
t~.ao
to.oo
ow- 8.00
6.00
4.00
2.00
O.OD

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Month
Batlger Cr Mean Monthly Flaw iatllus[etl far esisting rlgh[s)
Existing ISF
Proposed New tYotalJ Intermediate ISF
Proposetl New t[o[alJ High ISF
Table 2 and Figure 1 show that the summer flow recommendation of 5.5 cfs (2.5 cfs enlargement) is
available at least 50% of the time during April 1 to August 31. Based on limited water availability, the
summer flow recommendation was further reduced to 5.0 cfs (2.0 cfs enlargement) from September 1 to
October 31.
Precipitation Data
Staff reviewed local precipitation data sets from two weather stations located in the proximity of the Badger
Creek drainage. Table 3 shows the water year and the percent of average precipitation recorded at each site.
The average precipitation during the period of 1980 to 2003 is 89 percent of average at the Salida station
and 107 percent of average at the Guffey 10 SE station, indicating that the period of record for the gage is
reflective of average conditions.
Table 3: Precipitation llata as a percentage ot'Average