BOARD02480

• Board Meeting Date: 1/12/1998
• Description: ISF Section - New Appropriations - Notice to Appropriate Instream Flow Water Rights in Water Division 2
• Board Meetings - Doc Type: Memo

COLORADO WATER CONSERVATION BOARD
INSTREAM FLOW RECOMMENDATION SUMMARY REPORT

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Stream:
County:
ISF ID#:

Boswell Gulch
Lake; Chaffee
9512/A-008

Division:
Watershed:
DOW Code #:

2
Arkansas River
31853

INSTREAM FLOW RECOMMENDATION

Flow (cfs):

Upper
Terminus:

1.50 (5/1~10/14)
0.50 (10/1~2/14)
0.35 (2/1~4/14)
0.50 (4/1~5/14)

Length (miles):

3.7

headwaters in the vicinity of
lat 39 01' 36"N long 106 22' 48"W

Lower
Terminus:

Twin Lakes Reservoir in
NE NW S30 TllS R80W 6PM

USGS QUAD(s):

Mount Elbert, Granite

BASIS FOR INSTREAM FLOW RECOMMENDATION

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The DOW documented that a natural environment is present in the form of a brook, rainbow and
cutthroat trout fishery_
Based on the DOW's biological recommendation, flows of 1.5 cfs, summer, and 0.5 cfs, winter, are
necessary to preserve the natural enviromnent to a reasonable degree. However, the winter instream
flow recommendation was reduced to 0.35 cfs (2/15-4/14) based on the water availability analysis. The
DOW 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_

.

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· CWCB staffhas 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:

DOW: Jay Skinner

8/1/96

DWR: Steve Witte

8/1/96

CWCB STAFF:
~repared By: Uppendahl 1/15/98

Reviewed By: Espegren

1/20/98