WSP08863

• File Number: 8503.400.B
• Description: Costilla Creek/Rio Grande Basin
• Basin: Rio Grande
• Water Division: 3
• Date: 9/1/1941
• Title: Costilla Reservoir Investigations - September 1941 - ‎(Original Report)‎
• Water Supply Pro - Doc Type: Report/Study

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SUMMARY and CONCLUSIONS

1, The Costilla Creek is an interstate stream whioh rises in

New Mexioo, flows into Colorado at the eastern edge of the San Luis Valley,

finally entering the Rio Grande in New Mexioo, About 10,104 aores of land

are irrigated by waters of the oreek, 4.978 aores of whioh are in New Mexioo

and 5,126 aores in Colorado, Approximately 1,000 acres of land whioh are

irrigated in New Mexioo lie above the mouth of Costilla Canyon, The area

is irrigated by deliveries through a number of direot flow ditohes and by a

system owned and operated by the San Luis Power &: Water Company whioh oon-

sists of two off*ohannel reservo irs, Eastdale No, 1 and Eastdale No, 2 and

the Costilla Reservoir whioh is a ohannel reservoir looated in the mountains

of New Mexioo, having a oapaoity of about 15,000 aore feet, Eastdale Reservoh

No, 1 at present has a usable oapacity of 2.000 aore feet. Eastdale Reservoir

No, 2 is inoperative due to its inability to hold water, A stop order probaL:

will be plaoed on Costilla Reservoir, preventing storage to its full oapaoity

due to the oondition of the dam. Some water is delivered to Eastdale No. 1

direotly through Culebra Canal from the Culebra Creek.

2, The runoff of the Costilla Creek at the Costilla Reservoir and

at the Costilla gaging station, whioh is near the oanyon mouth, for the period

1911*1941 inolusive, together with its seasonal distribution is as follows:

VALUES IN THOUSANDS OF ACRE FEET

Costilla Cr, Below
Costilla Reservoir

Costilla Creek
near Costilla

Oot ,--Mar.
Apr,
May
June
July
Auo-.
o
Sept,

2,3
1,4
4,0
4.3
2,4
1.4
.7

16.5

8.5
4.4
10,8
8,3
3,9
3,0
1.7
39,6

Annual

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