WSP10795

• File Number: 8220.105.LJ
• Description: Navajo Reservoir
• State: NM
• Basin: San Juan/Dolores
• Date: 6/22/1982
• Title: San Juan River Water Supply Availability to New Mexico and Existing-Authorized and Prospective Uses
• Water Supply Pro - Doc Type: Report/Study

, .

cons~rvative wate~suPPlY projection the u~

Basin will not be

~equired to deliver water at Lee Ferry for the Mexican Treaty

obligation.*

Colorado River Compacts

Article III(a} of the Colorado River Compact apportioned

from the Colorado River system in perpetuity to the Upper Basin

and to the Lower Basin, respectively, the exclusive beneficial

consumptive use of 7.5 million acre-feet (maf) annually. Article

III(b) gives the Lower Basin, in addition to the 7.5 maf apportion-

ment, the right to increase its beneficial consumptive use of waters

of the Colorado River system by 1 maf per annum.

Article III(d} of the Colorado River Compact provides

that the states of the Upper Division (Colorado, New Mexico, Utah

and Wyoming) will not cause the flow of the river at Lee Ferry

to be depleted below an aggregate of 75 maf for any period of ten

consecutive years.

Article III(c} of the Colorado River Compact provides

that if the United States should recognize in Mexico any right to

the use of the Colorado River system, the waters would be supplied

from waters over and above the aggregate of the quantities appor-

tioned to the Upper Basin and to the Lower Basin by Article III (a)

and (b). Article rII(c} further provides that if this surplus

proves insufficient, the burden of the deficiency will be equally

borne by the Upper Basin and the Lower Basin and the States of the

Upper Division will deliver at Lee Ferry water to supply one-half

of the deficiency in addition to the amount required to be delivered

under Article III(d} (75 maf in any period of 10 consecutive years).

*See Secretary's January 13, 1975 statement to Energy and Water
Resources Subcommittee, U. S. Senate.
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