9580

• UCREFRP Catalog Number: 9580
• Author: U.S. Bureau of Reclamation.
• Title: Final Environmental Impact Statement - Navajo Reservoir Operations Volume 1.
• USFW Year: 2006.
• USFW - Doc Type: Grand Junction - Durango, CO.
• Copyright Material: NO

Contents
FE/S - Navajo Reservoir Operations
Page
Chapter III - Affected Environment/Environmental Consequences (continued)
Impacts Analysis .................................................. . III-80
Impacts Summary ................................................. .III-82
No Action Alternative ......................................... .III-82
Action Alternatives ............................................ .III-82
250/5000 Alternative (Preferred Alternative) ...................... . III-82
500/5000 Alternative .......................................... .III-83
Diversion Structures ..................................................... .III-83
Affected Environment ....................... ................... . III-84
Navajo Reservoir Water Diversions .............................. . III-84
San Juan River Water Diversions (Downstream of Navajo Dam to
Animas River Confluence) .................................... . III-84
San Juan River Water Diversions (Downstream of the San Juan-
Animas Rivers Confluence) ................................... . III-86
Methodology ..................................................... .III-86
Impacts Analysis .................................................. . III-87
No Action Alternative ........................... ............ .III-87
250/5000 Alternative (Preferred Alternative) ....................... . III-87
500/5000 Alternative .......................................... . III-91
Technical Assistance ............................................... . III-91
Monitoring ............................... .............. ...... .III-92
Water Quality .......................................................... .III-92
Affected Environment ............................................. .III-93
Previous Water Quality Studies ................................. . III-93
Methodology ..................................................... .III-97
Water Quality Standards ....................................... . III-98
State and Tribal ........................................... . III-99
Impacts Analysis .................................................. . III-99
No Action Alternative ......................................... . III-99
250/5000 Alternative (Preferred Alternative) ...................... III-100
500/5000 Alternative .......................................... III-102
Impacts Summary ................................................. III-102
Limnology ............................................................. III-103
Affected Environment ............................................. III-104
Navajo Reservoir .............................................. III-104
Existing Reservoir Characteristics ............................... III-104
Nutrients ................................................ III-104
Biological Productivity ..................................... III-107
Trophic State Indices ...................................... III-107
Temperature and Dissolved Oxygen (DO) .................... III-110
Other Parameters ......................................... III-111