WSP12980

• File Number: 8210.140.20.C
• Description: Imperial Irrigation District ‎(IID)‎
• State: CA
• Basin: Colorado Mainstem
• Date: 1/9/1996
• Author: Imperial Irrigation District
• Title: Water Requirements and Availability Sutdy ‎(draft)‎
• Water Supply Pro - Doc Type: Publication

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55 percent is primarily canal and reservoir surface evaporation, mam canal seepage, and
phreatophyte evapotranspiration. Therefore 45 percent of the 272,500 acre-feet of projected
system water equates to a potential water conservation of 122,600 acre-feet per year. Thus, at
100 percent acreage participation and 100 percent implementation of system improvements, the
total estimated maximum potential water available for transfer through water conservation is

405,800 acre-feet per year (122,600 + 283,200).

Table ES-4 presents the estimated volume of water that would be available for transfer based on
the percent land acreage participation and percent implementation of system improvements.

Table ES-3 Summary 0/ Estimated Water Conservation/or Each
Reclamation Reuse Concept Presented

Alternative Water Source/ Estimated Conservation Value
Project Concept Classification! 1
(acre-feet per acre)
Project Concept Identification
Reclamation and Reuse ~T,.,.,.. '..'... ......H}u-S
d.':'.' .,.:."...:.... ...
Treatment 29,000
River Diversions .','. ., '.:":. "'. .,.c.
c.,:.:'<'.,,:,::'.':"-: .',."'.' ....,
Vail--No Blending 106,000
Vail--Blending 53,000
Rositas-- Blending 45,200
Spruce--No Blending 49,300
Drain Diversions "~"~co:"~, ........::,u,'.,: .. '. "'...'..".."" .' u....>.
:..,"'.:""':.>.
Orange-O leander 10,800
Central Drain No.3 8,700
Rose Drain 10,800
"No Tilewater" Orange-Oleander 6,500
Salton Sea 13,200
Tertiary Treated Effluent 6,600
Groundwater .,..'.',' ....: -::cu....::,.
H.... :. ..:. ...,.
East Mesa 23,000
Sand Hills 24,000

Draft: Subject To Revision 1/3/96

ES-5