7850

• UCREFRP Catalog Number: 7850
• Author: Hydrosphere Resource Consultants.
• Title: Yampa River Basin Recommended Alternatives, Detailed Feasibility Study
• USFW Year: 1994.
• USFW - Doc Type: Draft.
• Copyright Material: NO

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EARLY OPERATING STUDIES ................................................................ 2-9
Studies of the Juniper Contemplated Draft .................................................. .
2-
Studies to Define an Environmental Baseline at Maybell ................................. . 2-9
Preliminary Flow Recommendations at Maybell ........................................... 2-11
FINAL OPERATIONS STUDIES FOR THE ENLARGED ELKHEAD RESERVOIR2-11
Current Potential Conditions Scenario ....................................................... 2-12
Assumptions .................................................................................... 2-12
Scenario Results ...............................................................................
2-1
Water Deliveries ...........................................................................
2-1
Reservoir Levels ........................................................................... 2-12
Instream Flow Conditions ................................................................
2-1
2040 Demand Conditions without Elkhead Enlargement Project ....................... 2-16
Key Assumptions .............................................................................. 2-16
Results ..........................................................................................
2-17
Water Deliveries ...........................................................................
2-17
Reservoir Levels ...........................................................................
2-17
Instream Flow Conditions ................................................................ 2-17
2040 Demand Condition with Enlargement Project ....................................... 2-19
Key Assumptions .............................................................................. 2-19
Results ..........................................................................................
2-20
Water Deliveries ...........................................................................
2-20
Reservoir Levels ........................................................................... 2-21
Instream Flow Conditions ................................................................ 2-21
CHAPTER 3 - RESERVOIR SITE CHARACTERIZATION
LAND USE AND OWNERSHIP ................................................................. -
General Physiographic Setting .................................................................. -
Historical Land Development and Existing Land Use ..................................... 3-1
Future Land Use .................................................................................. -
Property Ownership .............................................................................. 3-3
Land ............................................................................................. . -
Mineral, Oil and Gas Rights ................................................................. 3-4
Utilities and Recreational Facilities ........................................................ . -
GEOTECHNICAL INVESTIGATIONS ....................................................... . 3-6
Previous Investigations .......................................................................... . -
New Investigations ............................................................................... . 3-6
Seismic Risk ...................................................................................... . -
MAPPING ............................................................................................ . -
OPERATIONAL AND FLOOD HYDROLOGY ............................................. 3-10
Background ............................................................................... .....
3-0
Operational Hydrology .......................................................................... 3-10
Flood Hydrology ................................................................................. 3-11
Probable Maximum Flood ................................................................... 3-13
One-Hundred Year Flood ................................................................... 3-13
SEDIMENT MOVEMENT .................................................................... 3-15
General .............................................................................................
3-15
Sediment Inflow/Accumulation ................................................................
3-15
Downstream Channel Stability ................................................................ 3-16
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