BOARD02166

• Board Meeting Date: 9/21/1998
• Description: ISF Section - New Appropriations - Notice to Appropriate Instream Flow Water Rights in Water Division 1
• Board Meetings - Doc Type: Memo

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09/01/98 - Final RSR
COLORADO WATER CONSERVATION BOARD
INSTREAM FLOW RECOMMENDATION SUMMARY REPORT

Stream:
County:
ISF ID#:

Nott Creek
Gilpin; Jefferson
96/lIA-Oll

Division:
Watershed:
DOW Code #:

1
Clear Creek
17916

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INSTREAM FLOW RECOMMENDATION

Flow (cfs):

1.0 (4/15-7/14)
0.5 (7/15-8/14)
0.2 (8/15-4/14)

Length (miles):

3.2

Upper
Terminus:

headwaters in
NW NW S24 ns R72W 6PM

Lower
Terminus:

conO Ralston Creek in
NW SE S29 ns R71W 6PM

USGS QUAD(s):

Blackhawk; Ralston Buttes

BASIS FOR INSTREAM FLOW RECOMMENDATION

. The DOW documented that a natural environment is present in the form of a brook trout fishery.
. Based on DOW and DPOR's biological recommendation, flows of 1 cfs, summer, and 0,5 cfs winter, are
necessary to preserve the natural environment to a reasonable degree, However, the Winter instream
flow recommendation was reduced to 0.2 cfs (8/15-4/14) based on the water availability analysis. The
DOWand DPOR believe 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:

DPOR: Paul Flack
DOW: Jay Skinner

7/3/1996
7/3/1996

DWR: Dick Stenzil

9/23/1996

CWCB STAFF:

Prepared By: Uppendahl 1/15/98

Reviewed By: Espegren

1/20/98

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