WSP08419

• File Number: 8200.760
• Description: Yampa River General
• State: CO
• Basin: Yampa/White
• Water Division: 6
• Date: 3/1/1993
• Author: Hydrosphere
• Title: Yampa River Basin - Alternatives Feasibility Study - Final Report
• Water Supply Pro - Doc Type: Report/Study

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LIST OF FIGURES

Figure No.

Page No.

S-I Average Mass Balance of the Yampa River Mainstem ......,...............,...........S-5,6
S-2 Nine Reservoir Sites Visited in June of 1991 ,..,...........,...,...,...,..............S-11,12
S-3 Network Diagram of the Yampa River Basin Model....,..,.....,...,.,.........,....S-15,16
S-4 End-of-Month Reservoir Contents, 2015 Demand Level...,.,.........,......,......,...S-27
S-5 End-of-Month Reservoir Contents, 2040 Demand Level....,..,.........................S-28

I-I Location of the Yampa River Basin ,...............................,.......,.........,........ 1-2
1-2 Key Geographical Features of the Yampa River Basin .,..............,..........,.....,1-3,4

2-1 Hydrographic Features of the Yampa River Basin ....,....,....,............,...........2-3,4
2-2 Average Mass Balance of the Yampa River Mainstem ....,.,......................,.,..2-5,6
2-3 Location of Key Basin Water Rights ..,....................,.,..,.....,...,..,.......,.... 2-9,10

3-1 Location of Basin Reservoirs and Demands ...........,.,....,..........,..............3-13,14

4-1 Location of 64 Potential Reservoir Sites ...................,.....,..,..,...,.......,......, 4-3,4
4-2 Nine Reservoir Sites Visited in June of 1991 ,...........................,.............' 4-9,10
4-3 Final 5 Reservoir Sites Recommended,..,...,.,...,....,.,.........,..................,.4-31,32

5-1 Network Diagram of the Yampa River Basin Model.........,...............,...........5-7,8
5-2 Yampa River Basin Water Consumption ................,........,................,...,.....5-16
5-3 Demand Adjustments Applied to Historical Conditions to
Achieve Uniform 1989 Potential Use Conditions.................................,..,....,5-20

5-4 Hypqthetical Model Reservoir Diagram.,...................,............................,.. 5-25
6-1 Modeled Water Deliveries and Shortages - Scenario 1....,............,............,...... 6-9
6-2 End'ilf-Month Reservoir Storage - Scenario 1,......,................,....,......,.........6-10
6-3 Modeled Water Deliveries and Shortages - Scenario 11........,........,.,..............,6-13
6-4 End-of-Month Reservoir Storage - Scenario 11,......,.....,..........,........,.......,..,6-15
6,5 Modeled Water Deliveries and Shortages - Scenario 11I..........................,...,...6-18
6-6 End-of-Month Reservoir Storage - Scenario III.,...............,....,..,.,............,.., 6-19
6-7 Modeled Water Deliveries and Shortages - Scenario IV ,....,.....,...............,.....6-23
6-8 End-of-Month Reservoir Storage - Scenario IV...........,.....,....,..............,..,...6-24
6-9 Modeled Water Deliveries and Shortages - Scenario V ..,..,.,.........................,6-27
6-10 End-of-Month Reservoir Storage - Scenario V..........,..,.........,............,........ 6-27
6-11 Modeled Reservoir Surface Fluctuation ,....,.......,....................................... 6-31

7-1 Relationship Between Demand Shortages and Elkhead Reservoir Size....,...,........ 7-5
7-2 Relationship Between Demand Shortages and Stagecoach Reservoir Size ........,....7-5
7-3 End-of-Month Reservoir Contents, Near-term Scenario........,...,..................... 7-15
7-4 End-of-Month Reservoir Contents, Long-term Scenario ...,.............................7-16
7-5 Comparison of Daily vs, Monthly Flows, Yampa River at Deerlodge Park ,......., 7-18
7-6 Elkhead Dam and the Proposed Enlargement in Plan View.................... Attachment
7-7 Cross Sectional View ofElkhead Deam and Proposed Enlargement .,....,....... 7-21,22
7-8 Stagecoach Dam and the Proposed Enlargement in Plan View....,.......,.,. Attachment
7-9 Cross Sectional View of Stagaecoach Dam and the Proposed Enlargement .,.,.. 7-29,30
7-10 Long-term Project Development Schedule ....,..,.......,......,.,.............,....... 7-37,38
7-11 Detailed Near-term Project Development Schedule ,..........,.......,..,..,.,...,.,.7-39,40

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