BOARD00175

• Board Meeting Date: 9/21/1998
• Description: ISF Section - New Appropriations - Notice to Appropriate Instream Flow Water Rights in Water Division 2
• Board Meetings - Doc Type: Memo

9121/98 - Final RSR

COLORADO WATER CONSERVATION BOARD
INSTREAM FLOW RECOMMENDA nON SUMMARY REPORT

Stream:
County:
ISF ID#:

Boswell Gulch
Lake; Chaffee
9512/A-008

Division:
Watershed:
DOW Code #:

2
Arkansas River
31853

tit

INSTREAM FLOW RECOMMENDATION

Flow (cfs):

1.50 (5/15-10/14)
0.50 (10/15-2/14)
0.35 (2/15-4/14)
0.50 (4/15-5/14)

Length (miles):

3.7

Upper
Terminus:

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

. The DOW documented that a natural environment is present in the form of a brook, rainbow and
cutthroat trout fishery. tit
. Based on the DOW's biological recommendation, flows of 1.5 cfs, summer, lind 0.5 cfs, winter, are
necessary to preserve the natural environment to a reasonable degree, However, the winter instream
flow recommendation was reduced to 0,35 cfs (2/15-4114) 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,
. 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:

DOW: Jay Skinner

8/1/96

. DWR: Steve Witte

8/1196

CWCB STAFF:

Prepared By: Uppendahl

1/15/98

Reviewed By: Espegren

1/20/98

e

Div 2 Rec Sum Rpt