Economic Analysis of Critical Habitat Designation in the Colorado River Basin for the Razorback Sucker, Humpback Chub, Colorado Squawfish, and Bonytail April 1994

• Description: Economic Analysis of Critical Habitat Designation in the Colorado River Basin for the Razorback Sucker, Humpback Chub, Colorado Squawfish, and Bonytail April 1994
• State: CO
• Basin: Colorado Mainstem
• Date: 4/1/1994
• Title: Economic Analysis of Critical Habitat Designation in the Colorado River Basin for the Razorback Sucker, Humpback Chub, Colorado Squafish, and Bonytail April 1994
• Water Supply Pro - Doc Type: Report/Study

Figure 1 -3 -1. Map of Colorado River Basin.
Of the 36 fish species native to the Basin, 64 percent were not found in other river basins in
North America. Historically, only eight fish species in the larger rivers were common to
both the Upper and Lower Basin. Of these, four are currently listed as endangered and two
others may soon be listed. The large geographical diversity of the Basin also supports a
variety of habitats. The biodiversity of the Basin in the past in relation to its current
diversity is central to the designation of critical habitat.
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