WSP11602

• File Number: 8240.200.30.B
• Description: UCRBRIP Instream Flow Approprations
• State: CO
• Basin: Colorado Mainstem
• Date: 9/1/1995
• Author: CWCB
• Title: CWCB Board Meeting Memos
• Water Supply Pro - Doc Type: Board Memo

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111-17-95

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 inlO the
10.3 day periods (see texl 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,

2S,CXXl
2O.CXXl
If 15,000
0 10,000
5.CXXl
0
2S,CXXl
2O,CXXl
If 15.CXXl
0 10.000
5.CXXl
0
25,000
2O,CXXl
'" 15,000
~
0 10,000
5,CXXl
0

25,000
2O,CXXl
'" 15.000
~
0 10,(XX)
5,CXXl '-'"
0

2

.....

APl /lP2 AP3 MAl MAl MAJ JN1 JN2 JNJ Jl1 Jl2
PENCOAY21.75ll~

....,

AP1 AP2 APJ MAl MA2 MA3 JNl JN2 JNJ Jl1 Jl2 JL3

- - - - - - --- PEAKOo\T 1&.700CFS
- - - - " - - - -~~-.-.:m------
".os, tl11D
- - - - - - - - -.;3M"" - - - --
.'11
-,.r.~'l.09'I-l.'''. ~
'"

z.&u- "UiJ

t

APl AP2 All3 MAl MA2 MA3 JNl JN2 JN3 Jl1 J12 Jl3

. _ _ _ _ PEM~T'2.llOO~~____

',""
....... li!s

1.lft lollS

AP 1 AP2 AP3 MA 1 MA2 !v1A3 IN 1 JN2 JN3 Jl1 JL2 JlJ

10-17-95

Source: "Relationships between Rowand Rare Fish Habilat in the '15-Mile Reach' of the Upper Colorado River". U.S. Fish & Wildlife 'st.:f\-'Il

1995.

2