BOARD00479

• Board Meeting Date: 5/11/1998
• Description: ISF Section - New Appropriations - Phase III Report - Notice to Appropriate Instream Flow Water Rights in Water Division 4
• Board Meetings - Doc Type: Memo

NATURAL ENVIRONMENT SURVEY

Survey Date: 9/4Jy2

Survey Location:
Survey Summary:
Basis for ISF:

100 yds dls of confluence with East & Middle Fork
Rod and Reel Survey Method. Sample included: I-brown trout (8")..
brown trout fIShery

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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: H20 Temp" 6 C. Ooudy wllight rain - water clear.

18.1
4

WATER AVAILABILITY

Method:

The Powderhom Creek hydrograph was derived as per the Gage # 09121500: CeboUa 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 fcfs)
IAN FEB MAR APR MAY]UN
5.1 5.1 5.7 12. 42. 26.

JUL AUG SEP
12. 8.6 6.8

Powderhorn Creek (Gage #09121500)
1946-54

10

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

I - CWCS ISF AMOUNT I

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C:\MARK'NEW _RECSlWP'\IRECOMMENDATlON SUMMARY REPORT.doc