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Last modified
7/14/2009 5:02:32 PM
Creation date
5/20/2009 3:00:27 PM
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UCREFRP
UCREFRP Catalog Number
8031
Author
U.S. Department of the Interior.
Title
Fish and Wildlife Service Final Biological and Conference Opinion on Lower Colorado River Operations and Maintenance - Lake Mead to Southerly International Boundary.
USFW Year
1997.
USFW - Doc Type
\
Copyright Material
NO
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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />BIOLOGICAL OPINION <br /> <br />Table of Contents <br /> <br />Initial development: 1823 ............................ 84 <br />Dam construction: 1909-1954 ......................... 88 <br />Channel modification: 1954-1996 ... . . . . . . . . . . . . . . . . . . . . 93 <br />Other activities: 1823-1996 . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 <br />Status of the Species Within the Action Area ........................ 100 <br />Bony tail Chub ....................................... 100 <br />Razorback Sucker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10 1 <br />Critical Habitat of Bony tail Chub and Razorback Sucker .... . . . . . . .. 101 <br />Southwestern Willow Flycatcher ..................... . . . . . . . . . " 101 <br />Status of the Species Within the Action Area ................... 104 <br />Yuma Clapper Rail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 106 <br />Status of the Species Within the Action Area ................... 107 <br />Flat-tailed Horned Lizard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 109 <br />Project Location and General Vegetation Communities ............. 109 <br />Threats to Flat-tailed Horned Lizards and Their Habitat <br />Specific to the Action Area .......................... 109 <br />Status of the Proposed Species Within the Action Area .... . . . . . . . " 110 <br />Additional Socioeconomic and Related Factors Affecting <br />the Environmental Baseline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 113 <br />Human Population Impacting the Action Area. . . . . . . . . . . . . . . . . .. 116 <br />Economic Development Impacting the Action Area ............... 116 <br />Visitation/recreation Impacting the Action Area . . . . . . . . . . . . . . . . .. 117 <br />Environmental Contaminants Impacting the Action Area .. . . . . . . . . .. 118 <br />Wildfire Frequency in the Action Area ....................... 118 <br />Previous and Ongoing Section 7 Consultations ....................... 119 <br />Lower Colorado River Mainstem . . . . . . . . . . . . . . . . . . . . . . . . . .. 119 <br />Other Baseline Projects ................................. 123 <br />Central Arizona Project Havasu Diversion ................ 123 <br />Southern Nevada Water System ....................... 124 <br />Salton Sea and the Endangered Desert Pupfish .................. 124 <br />Operation of Glen Canyon Dam . . . . . . . . . . . . . . . . . . . . . . . . . . " 125 <br />Spring 1996 Beach/Habitat-Building Flow, Glen Canyon Dam ........ 125 <br />Fish and Wildlife Service Intra-Service Formal Consultation <br />on Division of Federal Aid Transfer of Funds to Arizona Game <br />and Fish Department for Stocking of Sportfish . . . . . . . . . . . . " 126 <br />Lake Havasu Fisheries Improvement Partnership Program <br />Formal Consultation .............................. 126 <br />Fish and Wildlife Service Intra-Service Formal Consultation <br />on Division of Fisheries and Federal Assistance on Stocking <br />of Rainbow Trout and Channel Catfish. . . . . . . . . . . . . . . . . .. 126 <br /> <br />EFFECTS OF THE ACTION ...................................... 126 <br />Bony tail Chub and Razorback Sucker . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 127 <br />
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