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

9/21198 . Final RSR

NATURAL ENVIRONMENT SURVEY

Survey Date: 9/4/92

Survey Location:
_ Survey Summary:
.. Basis for ISF:

100 yds d/s of confluence with East & Middle Fork
Rod and Reel Survey Method. Sample included: 1 brown trout (8").
brown trout fishery

FIELD SURVEY

Survey Date: 10/4/94

Method Used: R2X I Grassline Width (ft):
Measured Flow (cfs): 9.9 PHOTOS:
Survey Location: 100 yds d/s of confluence with East & Middle Fork
Notes: H2O Temp = 6 C. Goudy wllight rain - water clear.

18.1
4

WATER AVAILABILITY

Method:

The Powderhom Creek hydrograph was derived as per the Gage # 09121500: Cebolla Creek near
Lake City, CO. See hydrograph below. As per the Division 4 Engineer, senior water rights do
not present a water availability problem within this reach of stream.

OCT NOV DEC
7.1 6.0 5.5

MEDIAN MONTHLY FLOWS cfs
IAN FEB MAR APR MAY JUN
5.1 5.1 5.7 12. 42. 26.

JUL
12.

AUG SEP
8.6 6.8

e

Powderhorn Creek (Gage #09121500)
1 946-54

10

~
g 6
u.
>
--'
:I:
!z 4
o
~
~ 2
~

Ui
u. 8
o
~

-- ------------

----------

o

OCT NOV DEC JAN FES MAR APR MAY JUN JUL AUG SEP OCT
MONTH

1_ CWCS ISF AMOUNT I

IPowder2.wk41

e

C:\MARKINEW _RECS\WPS llRECOMMENDATION SUMMARY REPORT.doc