7799

• UCREFRP Catalog Number: 7799
• Author: Modde, T. and D. Irving.
• Title: Conceptual Management Plan for Habitat Enhancement In Old Charley Wash.
• USFW Year: 1994.
• USFW - Doc Type: \
• Copyright Material: NO

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upper basin, these reaches have been channelized by levee development to contain the river near population
centers and agricultural areas (Bestgen 1990). It is hypothesized that the loss of flooded bottomlands is one
factor has adversely affected the food base required by larval endangered fishes. The lack of recruitment
of the endangered Colorado River fishes is believed to be linked to predation by nonnative fishes and
starvation. Habitat enhancement of the bottomland habitat site described in this conceptual management

plan will help to restore needed food resources that should result in better survival of larval and juvenile

endangered fishes. Recovery of the endangered fishes will occur only if sufficient recruitment occurs to

maintain self-sustaining populations.

LITERATURE CITED

Bestgen, K.R. 1990. Status review of the razorback sucker, Xvrauchen texanus. Larval Fish Laboratory,

Colorado State University, Fort Collins, Contribution 44. 92 pp.

Cooper, D.J. and C. Severn. 1994a. Ecological characteristics of wetlands at the Moab Slough, Moab,

Utah. Recovery Implementation Program, Upper Colorado River Basin. U.S. Department of the

Interior, Fish and Wildlife Service, Denver, Colorado. 121 pp.

Cooper, D.J. and C. Severn. 1994b. Wetlands of the Escalante Ranch area, Utah: Hydrology, water

chemistry, vegetation, invertebrate communities, and restoration potential. Recovery Implementation

Program, Upper Colorado River Basin. U.S. Department of the Interior, Fish and Wildlife Service,

Denver, Colorado. 97 pp.

Cooper, D.J. and C. Severn. 1994c. Wetlands of the Escalante State Wildlife Area on the Gunnison River,

near Delta, Colorado: Hydrology, water chemistry, vegetation, invertebrate communities, and

restoration potential. Recovery Implementation Program, Upper Colorado River Basin. U.S.