WSP05238

• File Number: 8509
• Description: San Luis Valley
• State: CO
• Basin: Rio Grande
• Water Division: 3
• Date: 2/26/1935
• Title: Report of San Luis Valley Drain Committee to Administrator Harold L. Ickes
• Water Supply Pro - Doc Type: Report/Study

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From Drainage Area flBi'
---streams on Baca Grant

Long-time average runoff

1925-1934 average-92&%
Loss to Artesian Basin

Use by irrigation on Baca Grant,
7,000 acres at 1.5 acre feet
Reaching San Luis CreAk

Interception down to Head Lake
Balance (subject to other losses)

From Drainage Aren. "e"
Streams South of Baca Gr~nt

Long-time average runoff

1925-1934 average 92&%
Loss to Artesian Basin

Used by irrigation eust of troLl{;h
1000 acres at 1.5 acre feet
Balance (subject to other losses)

S=ary

Net irrflow to trough from Area """
TlBl!
rICH

Recovery from irrigated lands east
and southeast of Alrunosa

Deduct evaporation from Head and
San Luis Lakes 3~ ft. on 1200 acres

Deduct evaporation from remc,lnlng
intermittent free water surfaces along
trough, ~ ft. from 400 acres, for
two-thirds of the time

Net recovery

34,000 nc. ft. e,nnually
31,500 " " "
3,500 " " "
2tJ,OOO " " "
lO,500 " " "
17,500 " " "
6,000 " " "
]T, 500 " " "

32,000 " "
29,500 " "
3,500 " "
2b,'000 " "
1,500 " "
24,500 !I "

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4,800 nc. ft. annun lly
11,500 " !I !I
24,500 !I !I "
5,000 !I !I "
45,800 " " !I

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4,200
41,600

900
40,700

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On the basis of the above estimates, a yield of not to

exceed approximnte1y 40,000 acre feet per annum, is all that can

safely be expected from the proposed Sump Drain during periods of

moderate runoff.

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