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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~~;a~tual diversion for water year 1990 was 46,610 acre-feet as measured
at the outlet portal of Boustead Tunnel. The maximum mean daily import
through Boustead Tunnel was 924 ft3/s on June 10, 1990. A senior call was
on the Colorado River on May 4 and 5, 1990 when water was inadvertently
stored in Ruedi Reservoir. A release from Ruedi Reservoir was made from
July 29-31 to replace this out of priority storage. Total volume of
replacement water was 49 acre-feet.

The yearly total imports, the accumulated imports to the Arkansas River,
the water used for Twin Lakes Reservoir and Canal Company exchange, and the
import water available for allocations by the Southeastern Colorado Water
Conservancy District are shown on table 6. The 19 years of accumulated
imports total 846,600 acre-feet for an average of 44,560 acre-feet per year.
A plot of the Boustead Tunnel imports during water year 1990 is shown on
exhibit 5.

The discharge records for all diversions in water year 1990 are shown in
appendix A.

D. Twin Lakes Reservoir & Canal Comoanv/Frvinaoan Arkansas Proiect
Exchanae

On October I, the Twin Lakes Reservoir and Canal Company (Company) began
bypassing water into the Roaring Fork River drainage in exchange for water
in Twin Lakes. The exchange followed the operating criteria as shown in
appendix B. The total amount of the exchange at Twin Lakes was
1,657 acre-feet. The Company's account'in Twin Lakes was never at maximum
storage due to the low runoff and the high demands on storage. The monthly
summary of the exchange is also shown in appendix B along with plots of the
daily flows.

E. Turauoise Lake

On September 30, 1989, 123,940 acre-feet of water was in storage in
Turquoise Lake. This is 143 percent of the normal end of September storage.
During the water year imports ~rom Homestake Tunnel totalled
27,090 acre-feet (127 percent of normal). In addition to the Homestake
imports, Busk-Ivanhoe imported approximately 5,120 acre-feet of water though
the Carlton Tunnel (exhibit 6). The 5,120 acre-feet, which is 81 percent
of normal, was divided equally between the Pueblo Board of Water Works and
the City of Aurora. The Project imported 46,610 acre-feet (93 percent of
average) of water through the Boustead Tunnel during water year 1990.

Turquoi se Lake storage was reduced to iapproximately 53,900 acre-feet by
early May to make space available for im~ort water during the runoff season.
The water year ended with a content of J25,520 acre-feet in storage which
is 145 percent of normal.

Exhibits 7 and 8 show the precipitation and pan evaporation at Turquoise
Lake. Table 7 and exhibit 9 show the operation of Turquoise Lake during
the water year 1990.