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

I
I
I
I
I
I
I
I
I
I
, I
I
I
I
I
I
I
I
I

000339

additional release from Three Forks ReseIVoir will be made, up to a total of 52 cfs.

Instream flow requirements, other than that required for Savery Creek, have not been

quantified by biological studies and have been estimated for study purposes only.

3.3 MODELING SCENARIOS
Various project scenarios were modeled using WIRSOS for the 1930-1982 period

to determine the impact of these scenarios upon downstream flows. Five development

scenarios were selected for evaluation.

3.3.1 Scenarios No.1. IA and IB

Under Scenario Nos. 1, IA and IB, the Little Snake River Basin was modeled with

the addition of the Pot Hook Project to the Water Development Baseline. WIRSOS

output from these Scenarios were compared to the Water Development Baseline to

determine Pot Hook Project impacts upon the system. Results are discussed in Section
4.0.

3.3.2 Scenario No.2

Scenario No.2 is the same as Scenario No.1 with the addition of the consolidated

Three Forks ReseIVoir Project to the system. All Three Forks water rights are junior to

the Pot Hook rights modeled in Scenario No. I. Scenario No.2 output was compared

with that of Scenario No. I to determine the incremental impacts of Three Forks. Results

are presented in Section 4.0.

34