WSP00697

• File Number: 8200.750
• Description: San Juan River General
• State: CO
• Basin: San Juan/Dolores
• Water Division: 7
• Date: 3/1/1960
• Author: Clifford H Jex
• Title: Report on Stream Depletion of the San Juan River Basin in Colorado - March 1960
• Water Supply Pro - Doc Type: Report/Study

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0032?6

Table XII summarizes the present stream depletion:

TABLE XII

Average annual stream depletion by irrigation.....4,900
Average annual stream depletion by reservoir
evaporation.....,...........,............,. ..1,400
Average annual stream depletion by exported
water. , . . .. . .. . . , . .. . . .. .. .. . . . . .. . . . . . . . .. .. 200

Acre Feet

" II

II "

Total

6,500 Acre Feet

Potential Water Use

Field reconnaissance and use to topographic maps show the construction

of a nineteen mile canal with heading on the Middle Fork of the Piedra

River and a diversion from the main Piedra River would provide the Devil

and Stollsteimer Creeks' arable land with Piedra River water. The con-

struction of reservoir storage on Devil .and Stollsteimer Creeks would

provide for expanded use and the reuse of the water imported to these

two creek basins.

Stream runoff records of Middle Fork and main Piedra River indicate

the unused flow of the two streams would justify the construction of a

canal with a capacity of about 50 cfs. The water thus conveyed, supple-

mented by storage and the reuse of water would provide for the irrigation

of 2,500 acres of new land. This, together with irrigation of 500 acres

of land by extension and enlargement of existing canals will provide for

the irrigation of a total of 3,000 acres of new land.

Table XIII summarizes present and potential stream depletion:

-20-

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