7748

• UCREFRP Catalog Number: 7748
• Author: Western Water Consultants, I.
• Title: Final Report on Little Snake River Depletions by Pot Hook, Three Fork and Powder Wash Rights.
• USFW Year: 1990.
• USFW - Doc Type: Laramie, WY.
• Copyright Material: NO

April 19, 1966 conditional first enlargement right (100,000 AF), and the February 27, 1981
conditional refill right (166,458 AF) include irrigation, domestic, stock watering,
replacement and exchange, recreation, fish and wildlife, and flood control. Under the
conditional decrees, the primary use of the canal water is irrigation. At the request of
CRWCD, the Pot Hook Reservoir refill right (166,458 AF) was not considered in the
analysis.
It was assumed that all Pot Hook Project components are in place at the beginning
of the study period. Figure 5 shows a general schematic diagram of the basin and Pot
Hook Project components modeled by WIRSOS.
Table 3 presents a summary of the Pot Hook Reservoir input data used in the
WIRSOS modeling. CRWCD holds three conditional storage rights for Pot Hook
Reservoir with three different priority dates. Upon review of the decrees and previous
studies, discrepancies between appropriation amounts and previously proposed Pot Hook
Reservoir capacities were found. In the Savery-Pot Hook Project, Definite Plan Report
(USBR, May 1977), the USBR proposed a total storage capacity of 60,000 AF which is
insufficient to store even the first decreed right of 73,580 AF, dated June 5, 1959. The
second storage right, dated April 19, 1966, is an enlargement right of 100,000 AF. The
decree is unclear as to whether this 100,000 AF is in addition to the original 73,580 AF
right (making a total of 173,580 AF) or is an increase in the total right to 100,000 AF.
In either case, the USBR capacity of 60,000 AF is insufficient to store this second right
also.
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