WSPC06001

• File Number: 8240.200.30.B
• Description: ISF Filings for Endangered Fish in 15-Mile Reach ‎(UCRBRIP)‎
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 10/20/1995
• Title: Instream Flow Filings ‎(not case specific)‎ Special Board Meeting
• Water Supply Pro - Doc Type: Board Memo

10-17-95

Colorado Water Conservation Board
Special Board Meeting - October 20, 1995
Grand Junction, Colorado

Recovery Instream Flow
15 Mile Reach, Colorado River

Table 3. Fish and Wildlife Service Flow Recommendations: 10 Day Average Flows'. Average discharge
for each 10 day period in hydrographs recommended for the spring months of April, May, June and July in the
15 Mile Reach. April and June are subdivided into three 10 day periods; May and July are subdivided into the
10,3 day periods (see text for explanation of calculations). Recommended magnitudes of annual peak days
(average of 24 hour period on the highest day of the year) are also shown.

~
o

25,000
20,000
15,000
10,000
5,000
o

~
o

25.000
20,000
15,000
10,000
5,000
o

25.000
20.000
~ 15.000
0 10.000
5,000
0
25,000
20,000
'" 15,000
~
0 10,000
5,000
0

1

.....

APt AP2 AP3 MAt MA2 MA3 JNl JN2 JN3 JLl JL2
f'€N<:OAY2\.7S0CFS

APt /4P2 AP3 MAt MA2 MA3 JNl JN2 JN3 JLt

- -.- ~ - - PEN<OAY t6.7QOCfS
- -- --- -- - ----<~:u:m-----
11.on
'163 _____
-.- - - - -- - -',;39r
...'"
~1;:(4S-.1.lm _3."'.
~

z.4U-uu

t.

APt AP2 AP3 MAl MA2 MA.3 JN1 JN2 JN3 Jlt Jl2 Jl3

PEAKOAY 12.900CFS
". - - - ---.--------

'-'"

APt AP2 AP3 MAl tM2 MA3 JNt JN2 JN3 JL1 Jl2 JL3

10.t7-95

Source: "Relationships between F10w and Rare Fish Habitat in the 'IS-Mile Reach' of the Upper Colorado River". U.S. Fish & Wildlife Ser\'l(

1.995.

2

95C 1501