9383

• UCREFRP Catalog Number: 9383
• Author: SWCA, I.
• Title: Recovery Goals for the four Colorado River Endangered Fish Species.
• USFW Year: 2000.
• USFW - Doc Type: Logan.
• Copyright Material: NO

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(Minckley 1982), many of which are large mainstem predators, such as flathead catfish
us olivaris), channel catfish (1ctalurus punctatus), largemouth bass (Micropterus
es), and striped bass (Morone saxatilis).
Three programs coordinate conservation and recovery activities in the lower basin. The
Grand Canyon Adaptive Management Work Group (AMWG) was established by the Secretary of
Interior as a Federal Advisory Committee to provide oversight on implementation of the
elements of the environmental impact statement on the operation of Glen Canyon Dam, and to
protect and conse resources of the Colorado River ecosystem through Grand Canyon. The
AMWG consists 0 erse group of stakeholders, which directs coordinated scientific studies
onitoring and Research Center (GCMRC). The Native Fish Work Group
(NFWG) is a coordinated effort by state and federal agency biologists, as well as university staffs
and volunteers, to conserve and protect the genetic pool of razorback suckers in Lake Mohave.
The Lower Colorado River Multi-Species Conservation Program (MSCP) was initiated in
response to the designation of critical habitat for the four endangered "big river" fishes (Colorado
pikeminnow, humpback chub, razorbac ker, and bonytail) in 1994, and the listing of the
southwestern willow flycatcher as endAlJge in 1995. Currently, the MSCP is comprised of
federal, state, and private organizations with the goal of developing and implementing a plan that
conserves habitat and works toward the recovery of nearly 100 terrestrial and aquatic species
along the Lower Colorado River over the next 50 years.
2.3 San Juan River Basin
The San Juan River basin consists of the mainstem S River and the Animas, La
Plata, and Mancos rivers as major tributaries. Flow of the S n River is regulated by Navajo
Dam, but is also greatly influenced by flows from the Animas River, which are largely
unregulated. Numerous dams and diversions on the San Juan River below Navajo Dam impede
fish passage, reduce the volume of the river, and alter the seasonal regime by lowering spring
flood magnitude and increasing summer, fall, and winter base flows. Releases from Navajo Dam
affect water temperatures for a short distance downstream, but temperatures through much of the
San Juan River remain seasonally warmed and similar to historic extremes and means
The San Juan River has a unique ecological setting that, despite substantial w

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