WSP03306

• File Number: 8281.300
• Description: Colorado River Studies and Investigations - Colorado River Consumptive Uses and Losses Report
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 1/1/1984
• Title: Colorado River System Consumptive Uses and Losses Report 1976 - 1980
• Water Supply Pro - Doc Type: Report/Study

TABLE LC-1

Lower Colorado River Basin
Colorado River Mainstream Estimated Reservoir Evaporation and Channel LOSS-V

1976-1980
Reservoir Evaporation
Lake Lake Lake Senator Wash
Water Year Head Mohave Havasu Reservoir OtherY Total
1976 862 177 128 2 40 1,209
w 1977 817 181 138 2 36 l,l74
N
1978 713 154 120 2 32 1,021
1979 747 157 113 2 32 1,051
1980 816 165 126 2 35 1,144

Apparent Channel Losses~1
Lee Ferry Hoave r Dam.
To Hoover Dam to IB
40 50

roo

l60

30

(-40)

Average 791 167 125 2 35 1,120 80
1/ Undistributed by States~
Y "Other" impoundments include Palo Verde~ Headgate Rock, Imperial, Laguna,
3/ Losses include channel evaporation, seepage, and phreatophyte consumptive
"excellent" gage is 5 percent, or approximately 400,000 acre-feet per year for the
the International Border. Such gage errors may result in the computation of large

. > ,.~,. ~:,' ,~, -'.'0","-

Tot al
90

(-110 )

90

l80

340

400

430

290

!2!!.
240

160

S91~]O

(1,000 acre-feet)
Total Reservoir
Evaporation and
Channel Loss
1,300

1,260

1,360

1,480

1,390
1,360

and Mareloa Diversion Dams.
use. Note that gauge error of a USGS
gages at Lee Ferry, Hoover Dam. and
apparent channel losses.

.