Navajo Reservoir Operations Vol. II

• File Number: 8220.105.I
• Description: Colorado River-Water Projects-Navajo-Environmental Studies
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 9/1/2002
• Author: BOR
• Title: Navajo Dam EIS-Draft EIS-Navajo Reservoir Operations-Volume II
• Water Supply Pro - Doc Type: EIS

I 55',5~0~00 1 _ _ _~_ _ 1 1 1 1 I I 1 I I I
I - T - -r- --1-- -J ---:--- -~---- ~ - lNO ACTIONt-
_ 4,:>UU ---1-----1--- ---""1---- f- --,..---
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~ 4,000 ---.----....--- ---....---- ---+-----1-----
~ 3,500 -- --- - -- - -- - ---!----
co
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~ 2,500 ---:-~---:---
.0
~ 2,000
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:ll 1,500
0:: 1,000
500
o
1

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2

12

3

4

5

6

7

6

9

10

11

Months 1929-1993

Navajo Reservoir Monthly Releases Ranked by Month in Ascending Order. Under this
alternative, large releases are made from August through January to meet reservoir target levels.
Large releases from April through July are to prevent spills.

.

5,500
5,000
~ 4,500
_ 4,000
..
lil 3,500
~ 3,000
':: 2,500
.~ 2,000
~ 1,500
..
0:: 1,000
500
o
1

- ~
,

~ - - ~ - - ~ - Preferred Plan -
u--r---t-u-i----t- 250-5000

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2 3

6 7 6

Months 1929-1993

12

10

4

5

9

11

Navajo Reservoir Monthly Releases Ranked by Month in Ascending Order. Under this
alternative, large releases are made from April through June to meet flow recommendations and
manage spills. Only a few winter months require increased releases to manage the reservoir.

00351