WSP07246

• File Number: 8273.100
• Description: Colorado River Basin Salinity Control - Federal Agency Reports - BOR
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 1/1/1978
• Title: Reject Stream Replacement Study - Status Report Janaury 1978
• Water Supply Pro - Doc Type: Report/Study

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Table 1
Probable Water Salvage Potential in the All-American Canal 1/
Units: acre-feet
to Probable Loss Theoretical Loss Est. Savings
W From Unlined From Lined With Lined
0 Station Canal Canal 2/ Canal
--1
Station 60 to Pilot Knob 60,000 ~/ 14,000 7/ Undetermined !Y
Pilot Knob to Drop 1 57,000 .11 9,000 48,000
Drop 1 to East Highline
Canal 40,000 ?/ 10,000 30,000
East Highline Canal to
Central Main Canal 3,300 y 3,300 0
Central Main Canal to
West Side Main Canal 4,200 y 4,200 0

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Data extracted from attachment to letter from Area Engineer, San
Bernardino, to Regional Director, Boulder City; Subject: Report on
Findings of General Investigation (Feasibility), Boulder Canyon Project,
All-American Canal System Water Salvage, Imperial Division, California,
April 17, 1970.

Losses from lined canals include 0.10 ft/ft2/day seepage loss, plus
estimated evaporation loss, plus losses from siphons, except for the
last two reaches where the theoretical loss from a lined canal was
limited by the probable loss from the unlined canal.

?/

~/

Based on Imperial Irrigation District recorded losses for 1965 and 1966,
rounded.

1/

Based on January 1967 ponding test loss, plus evaporation, extended
to one year.

~/

Ten-year average, Imperial Irrigation District provisional records,
rounded.

y

Based on January 1966 ponding test loss, plus evaporation and loss
from siphons, extended to one year.

II
~/

Includes 50o-acre-foot loss from siphons.

Since some unknown quantity of the present seepage losses returns to
the river, the quantity that could be saved by canal lining has not
been estimated.

10