WSP05411

• File Number: 8141.700
• Description: Fryingpan-Arkansas Project - Annual Operating Plans and Reports
• State: CO
• Basin: Arkansas
• Water Division: 5
• Date: 11/1/1990
• Author: US DoI BoR
• Title: Annual Operating Plan Fryingpan-Arkansas Project Colorado 1990 - 1991
• Water Supply Pro - Doc Type: Annual Report

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1988-1989 winter water was released and 140 iacre-feet evaporated. Pueblo
Reservoir reached its maximum storage on Mllrch 30 with an elevation of
4851.51 feet and content of 151,640 acre,feet.

The below average native runoff in the Arkansas River and the normal
precipitation in the basin (eXhibits 14 and 1~) required near normal storage
demands. Some winter water was released inll1id-October and some again from
mid-April through September. Project water ~emands began in late June and
continued through mid-September. .

The water year ended with 87 ,890 acre-f~et :of water. in storage in Pueblo
Reservoir. The 1989-1990 winter water storage is shown on exhibit 16 and
the releases are shown on exhibit 17.

The pan evaporation rate used for computing Pueblo Reservoir evaporation
is shown on exhibit 18. Table 10 and exhibit 19 show Pueblo Reservoir
operations during water year 1990.

1. Storaae Contracts

In water year 1990, the Project had eight' contracts for storage of water
in Project storage space in the East Slope Storage System. Six are
long-term contracts: Twin Lakes Reservoir and Canal Company for
54,452 acre-feet; City of Colorado Springs for firm storage for
17,416 acre-feet; City of Aurora for 5,000 acre-feet; Pueblo Board of Water
Works for 5,000 acre-feet; Busk-Ivanhoe, !Inc. for 10,000 acre-feet of
storage space; and Homestake Project for 30,pOO acre-feet of storage space.
The remai ning contracts were I-year interim contracts for i f-and-when
available storage space.

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J. Proiect Water Sales and Deliveries

The Project made available 142,120: acre-feet of water to the
Southeastern COlorado Water Conservancy Di~trict (District) during water
year 1990. The District purchased 45, 73~ acre-feet of the water made
available to them. The District called f~r 46,820 acre-feet of project
water throughout the year. The Project water was also reduced by
10,800 acre-feet of evaporation. By the end of September, the District had
26,787.00 acre-feet of 1989-1990 allocated: water and 70,286.18 acre-feet
of carryover water left in storage. Of the 46,820 acre-feet of Project
releases, 12,930 acre-feet was for municipal and industrial use. The
Project water released from Pueblo Reservoi!r is shown on exhibit 20.
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K. Reservoir Storaae Allocation Data i

Table 11 presents the reservoir storage allocation data for the
Project's five reservoirs. :

L. Reservoir Evaooration and Precipitation

Table 12 and table 13 present the m.onthly average evaporation and
precipitation from the four weather stations in the Fryingpan-Arkansas
Project System. The daily water surface evaporation is computed using the

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