WSP00436

• File Number: 8220.114.A
• Description: Dolores Participating Project
• State: CO
• Basin: San Juan/Dolores
• Water Division: 7
• Date: 3/1/1977
• Title: Dolores Project-Colorado - March 1977
• Water Supply Pro - Doc Type: Project Overview

'.

Number
Farms

Number
People

Direct beneficiaries
Irrigation
M&I

Recreation (Incl. F&HL)
No individual beneficiaries
direct project b~nefits.

700 3,300
19,000 initially
38,000 ulitimately
473,800 Rec. days
receiving over 5 percent of

2. Any involvement with International obligations: Yes:

Mexico was allotted 1.5 million acre-feet of water of the

Colorado River annually by treaty in 1944. The depletion of

80,900 acre-feet attributable to the Dolores Project will not

impair that delivery, since water remains for development in the

Upper Colorado River Basin and under the apportionment to

the State of Colorado.

Minute 242, International Boundary and Water Commission, under

the Mexican Treaty provided that water delivered upstream of

Morelos Dam have an annual average salinity of no more than

115 ppm plus or minus 30 pp~ over the average salinity of

Colorado River waters which arrive at Imperial Dam. Title I

of P.L. 93-320 will provide treatment works which will enable

this differential to be met. Title II of P.L. 93-320 provides

a broad range of salinity control units authorized for con-

struction and others to be studied which will alleviate a

substantial portion of the salinity load at Imperial Dam.

This, together with other proposed programs, will enable the

salinity standards to be met and provide useable water to both

United States and Mexican water users.

I