BOARD00331

• Board Meeting Date: 9/21/1998
• Description: ISF Section - New Appropriations - Notice to Appropriate Instream Flow Water Rights in Water Division 4
• Board Meetings - Doc Type: Memo

9/21/98 - Final RSR'

COLORADO WATER CONSERVATION BOARD
INSTREAM FLOW RECOMMENDATION SUMMARY REPORT

Stream:
County:
ISF ID#:

South Beaver Creek (2)
Saguache; Gunnison
96/4/A-032

Division:
Watershed:
DOW Code #:

4
Gunnison River
38249

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INSlREAM FLOW RECOMMENDATION

Flow (cfs):

2.5 (4/15-7131)
1.2 (8/1-10131)
0.7 (1111-4/14)
13.3

Length (miles):

Upper
Terminus:

conO East Beaver Creek in
SE SW S12 T47N RIW NMPM

Lower
Terminus:

BLM Boundary in
SE SW S32 T49N RIW NMPM

USGS QUAD(s):

Spring Hill Ck; Iris NW; Big Mesa; McIntosh Mtn

BASIS FOR INSlREAM FLOW RECOMMENDATION

. The BLM documented that a natural environment is present in the form of a rainbow and brown trout
fishery. e
. Based on the BLM's biological recommendation, flows of2.5 cfs, summer, and 0.85cfs, winter, are
necessary to preserve the natural environment to a reasonable degree. However, the summer and winter
instream flow recommendations were reduced to 1.2 cfs (8/1 -10/31) and 0.7 cfs (11/1-4/14) based on
water availability analysis. The BLM believes the lower flow recommendation will still preserve the
natural environment.

. CWCB staff has conducted a water availability analysis and determined these amounts are available for
the Board's appropriation.
. CWCB staff has determined that adequate water supplies exist such that the natural environment may be
preserved without limiting or foreclosing the exercise of valid existing water rights.

CONSULTATIONS:

BLM: Roy Smith

8/26/96

DWR: Ken Knox

8/26/96

CWCB STAFF:

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Prepared By: Uppendahl 4/15/98

Reviewed By: Espegren 5/1198

C:\MARKINEW _RECS\WPSlIRECOMMENDATlON SUMMARY REPORT. doc