WSP04902

• File Number: 8240.200.46.G
• Description: Ruedi Reservoir
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 3/1/2002
• Title: Ruedi Reservior 2012 Agreement, Final Environmental Assessment and FONSI
• Water Supply Pro - Doc Type: Publication

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Contents

Page

Chapter 1 - Project Scope

1.1 Background_........ ................_........................... ....... .................. ..... ....1-1
1.2 Purpose and Need... ... ............................................................ ..... ..... .... 1-4
1.3 Proposed Action... ...... ... ...... ................................_.... ..... .................... .1-4
1.4 Issues and Concerns............................................................... ......_.:.. ...1-4

Chapter 2 - Alternatives
2.1 Alternative Descriptions...................... ............_......... ............................ 2-1
2.1.1 Assumptions Common to All Alternatives.............................._...........2-1
2.1.2 Operational Measures Common to All Alternatives... ........................ .... 2-2
2.1.3 No Action Alternative................... ............................. ...... ........ ....2-3
2.1.4 Alternative A........ ............ ........ ....... .................. ................. ..... 2-3

2.1.5 Alternative B......._. ......_............................. .............. ......... .... ....2-3
2.1.6 Alternative C.._...... ....................................... ............... ......... ....2-4
2.2 Alternatives Considered But Dropped From Further Consideration. .. .. . . . .......... .. . 2-5
2.2.1 Continuation of the 5,000 af Annually and 5,000 af 4 out of 5 Years
Contract with No Additional Endangered Fish Releases From Ruedi

Reservoir Alternative............................................. ............... ......2-5
2.2.2 Release Restriction Alternative............. _................... ............ ....... ...2-5

Chapter 3 - Affected Environment

3.1 Hydrology......... ............ ................................................ ................... 3-1
3.1.115 Mile Reach Augmentation Water............................._................... 3-3

3.1.2 Water Contracts................................ .......... ......... .... ................. 3-5
3.2 Aquatic Wildlife.. ...................... .......... .............. ...... .................. .... .....3-6
3.2.1 Sport Fisheries........ ._....................... ...._...... ........ ........ .......... .... 3-6
3.2.2 Threatened and Endangered Species................................... .......... .... 3-9

3.3 Recreation......... ........................ ........................ ........ ....................... 3-10
3.3.1 Ruedi Reservoir.. ......................... ..................... ... ._........... ..... .... 3-10
3.3.2 Fishing............... ............... ................_...... ...... ... ....... .......... ....3-10
3.4 Economic/Social Environment......... ...... ................_. ........................ ..... ..3-12
3.5 Hydropower Production......................... ........ ............ .... ..... ..... ..... ...... ..3-14

Chapter 4 - Environmental Consequences
4.1 No Action Alternative.................................... ......... ............ .-........ ..... '" 4-1

4.2 Alternative Analysis........... ..... .......... ................... ............. ......... ......... 4-3
4.2_1 Hydrology...... ...... .................................................. ....... ..........4-3
Erosion and Scour......... ............ ......... ............ ........... ................4-6
Water Contracts................... .........._........... ._................ ..... ........4-8
4.2.2 Aquatic Wildlife...... ............. .... ... ..~................ ..... .... ...... ..... ..... ..4-9
Sport Fisheries........................................... ........ ...... .............. ...4-9

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