WSP08564

• File Number: 8147
• Description: Gunnison-Arkansas Project
• State: CO
• Water Division: 4
• Date: 2/27/1951
• Author: CWCB
• Title: Report of Policy and Review Committee with Proposed Principles of Operation
• Water Supply Pro - Doc Type: Report/Study

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TabJle

Water available for irrigation use in Arkansas River Valley as a result of
initial development. AveraGe for period 1911-1944.

Units 1,000 acre-feet

:

Net

Trying Pan Diversion
J'.rl:ansas River Flood
Wurtz Ditch
l(unicipal Water
SUBTOTAL

Los ses
: Reser-
(8) I TranB- : voir
:portatial EvaPOr-
I ati~n(8):
7.5 : 0.0
2.0

virgin
water at:Headgate
Pueblo : supply
(9)

neser-
voir
53.7
18.0
2.0
-17.0
56.7

:

Item

Gross:Spills
: Water:

(1)
(2)
(3)
(4)

. .
. .
: 0'9-:21
50.0: 30.0
2.0:
-17.0:

.
.

:

:

85.1

l';~lJrn flOlr,r from
IDunicipal vater (5) 7.0: 2.5 4.5 6.7
Addi tional 'l'-.7in Lake s
imports (6) 14.9: 1.4 1.0 12.5 18.8
Winter fl~l Arkansas
River (7) 93.0: 16.0 3.0 74.0 : 74.0
TOT~L ARKANSAS VALLEY : 219.1: 48.5 8.9 __14.0 : ]47.7 184~'
Mun~ci~al Return flow in tri hutary streams (5) 3.5 5.2
-'--

(11 Oivertible from Frying Pan Watershed and Hunter Creek.
\2\ Water at Pueblo Damsite, which 'would spill from Caddo a Reservoir. It occurs
largely in years of high runoff such as 1915, 1921, 1923, 1924, and 1942.
--~)--Arldi tional useable water -(for municipii- purposes) due to more efficient use
of the water yielded by Wurtz Project.
('_~) Wurtz Ditch importation (2,000 AF) plus 15,000 AF project water.
~5) Estimated as 70 per cent of 15,000 acre-feet roject water diverted. Of these
diversions, about 10,000 acre-feet are for municipalities located along
Arkansas River and about 5,000 acre-feet for Colorado Springs and Eads
located on tributaries.
(6) Additional imports made possible by provision of additional storage capacity
in Twin Lakes Reservoir and replacement storage in Aspen Reservoir.
(7) Estimated winter fl~! n~N being diverted for direct flow use which, could be
stored in Pueblo Reservoir, by agreement, rdthout depleting winter inflow
to John hfurtin Reservoir.
:8) Detenrd.ned from Reservoir operation study, distribution b;_ Items based on
operating assumptions. '
(9) The virgin water supply plus use and reuse of return fl~l. Except for re-
regulated winter fiOVl the head[ate supply is estimated at 1.5 times the
virgin supply.

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