WSP09218

• File Number: 8200.765
• Description: Little Snake River General
• State: CO
• Basin: Yampa/White
• Water Division: 6
• Date: 7/31/1990
• Author: Western Water Consul
• Title: Final Report on Little Snake River Depletions by Pot Hook - Three Forks - and Powder Wash Rights
• Water Supply Pro - Doc Type: Report/Study

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area, water rights and diversion information, diversion and use efficiencies, and return flow

schedules.

2.2.1.l Inflows. Major tributary and main stem inflows were defined by historic and

synthesized gaging data. Ungaged inflows were computed at a unit area rate and related

to nearby gaging station records. All ungaged inflows for the months August through

February of each year were set to zero. Figure 4 shows the gages, and historic and

synthesized periods of record used.

2.2.1.2 Water Rights. AIl Wyoming water rights on the main stem Little Snake River

below Little Snake near Slater, Colorado gaging station (9-2530), and on Savery Creek

below the Sandstone dam site were included in the WIRSOS input data. Colorado water

rights on Slater Creek and the Little Snake River to its confluence with the Yampa River

were also included in the model. Water rights included in the input are presented in

Appendix B. AIl water rights were modeled in accordance with the applicable state water

laws and the provisions of the Upper Colorado River Basin Compact. Under provisions

of the Upper Colorado River Basin Compact, water rights above the compact point (100

feet below the confluence of Savery Creek and the Little Snake River) with priority dates

before October 11, 1948 "shall be administered without regard to rights covering the

diversion of water from any down-stream point" (State of Wyoming, 1982). This is

handled in the model by modifying applicable dates of rights above the compact point so

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