This document presents an overview of the process, procedures and determinations associated with the proposed critical habitat designation for the razorback sucker, Colorado squawfish, humpback chub, and bonytail (also known as bonytail chub). These species are listed as endangered under the Endangered Species Act (Act) of 1973, as amended (16 U.S.C. 1531 et seq.). Part I is an overview of the proposed critical habitat designation for the Colorado River endangered fishes. Part II is a summary of the biological information used in determining areas for proposed designation and the description of each area proposed on January 29, 1993 (58 FR 6578). Part III is a summary of the economic and other impacts of the proposed critical habitat designation. Part IV discusses the Section 7 consultation requirements of the Act and available conservation measures. Part V discusses the Exclusion Process and the economic and biological factors which are considered during exclusion considerations. Part VI is an analysis and summary of public comments received on the proposed rule. The information contained herein provides additional information about the proposed critical habitat designation prior to the development of a final rule.
United States Department of the Interior Fish and Wildlife Service, "Overview of the Proposed Critical Habitat for the Colorado River Endangered Fishes" (1993). All U.S. Government Documents (Utah Regional Depository). Paper 298.