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

9/21/98 - Final RSR

NATURAL ENVIRONMENT SURVEY

Survey Date: 8/22/95

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

U/S confluence with Little Blue Creek
Rod & Reel Survey. Sample included: 4 brook trout (5" - 8").
brook trout fishery

FIELD SURVEY

Survey Date: 8/15/95

Method Used: R2X I Grassline Width (ft): 7.06
Measured Flow (cfs): 1.24 . PHOTOS: 7
Survey Location: 1/2 mile u/s of confluence with Little Blue Creek
Notes: High gradient stream - step/pool.

WATER AVAILABILITY

Method:

The East Fork Little Blue Creek hydrograph was derived as per USGS WRI Report 85-4086.
See hydrograph below. The summer and winter instream flow recommendations were reduced
to 0.6 cfs (8/1-10/31)/(4/1-4/30) and 0.3 cfs (1111-3/31) based on the water availability analysis.
As per the Division 4 Engineer, senior water rights do not present a water availability problem
within this reach of stream.

OCT NOV DEC
.66 .49 .37

MEAN MONTHLY FLOWS (cfs)
IAN FEB MAR APR MAY JUN
.31 .31 .42 1.0 5.3 12.

JUL
2.5

AUG SEP
1.0 .69

e

East Fork Little Blue Creek
SYNTI-ETIC HYDROGRAPH - Modified

2

en
u.
~ 1.5

------

;::
o
..J
U.
>-
..J
I
~
o
::0
~ 0.5
::0

1

-

----

----

--

o

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

I - CWCS ISF AMOUNT I

e IEFBlue.wk41

C:\MARKINEW _RECS\WPIIIRECOMMENDATION SUMMARY REPORT.doc