WSP10514

• File Number: 8503.400.B
• Description: Costilla Creek/Rio Grande Basin
• Basin: Rio Grande
• Water Division: 3
• Date: 5/1/1943
• Title: Basic data on Costilla Reservoir Operations - May 1943
• Water Supply Pro - Doc Type: Data

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BASIC DicTA ON COSTILLA RESERVOIR OPERATIONS

May 1943

CONDITION A

Costilla Reservoir per~anent capacity 11,000 acre feet. 2,600
acres Jar-oso colony lands in Colorado. 5,000 acres Costilla Reservoir
System lands in New Mexico.

99 second feet direct flow rights in Colorado and New Mexico
plus 12 second feet channel loss. Demand of 5,500 acre feet from
Costilla Creek to supply Eastdale Reservoir rights.

CONDITION B

99 second feet direct flow rights; demand of 2,500 acre feet from
Costilla to Eastdale Reservoir No.1. Jar-aso colony to be irrigated by
22 second feet aompany-mvned direct flow rights through Cerra Canal.

CONDITION C

Direct flow rights equalized (64 second feet operating); demand
of 1000 acre feet from Costilla River to Eastdale storage through Cerra
Canal. First storage risht af 2,800 acre feet in Costilla Reservoir
to Jarcso colony lands with no hold-over privileges.

CONDITION D

Same as Condition C excepting that first 5,500 acre foot pri-
ority in Costilla Reservoir be divided equally between the states
without hold-over privileges,

CONDITION E

64 second feet direct flow right.s. 1,000 acre f€'et to Eastdale
Reservoir throueh Cerra Canal. 18% of water stored in Costilla Reser-
voir to Jeroso colony; 82% to Costilla Reservoir System lands; reservoir
rights to be of equal. prio.rity with no hold-over privileges. After
diversions reach 2 acre feet per acre on either'class of land, any
r~emaining water ~ ~ r~'2LY.Q,.k ~_?!he ~~t ?,~ ~t land to "5e""'used
by the other class of land in an amount sufficient to make total diversion
2 acre feet per acre during the current season.

CONDITION F

37 second feet rema~nlng private direct flow rights operating in
order of priority. 1000 acre feet to Eastdale Reservoir. 27 second feet
company-owned rights in Colorado and New Mexico ~....'\..JU' ,! ,LV J'oJjP ~"'}ilt-
~ turned back to the stream for use on Costilla Reservoir System lands.
All Costilla Reservoir System lands and Jeroso lands operated on parity
basis.

CONDITION G

Same as Condition C excepting that the Jaroso capacity of Costilla
Reservoir (2,800 acr~ f~et) takes last priority in reservoir instead of
first.

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