This project addressed movement of nonnative fish into river reaches of critical habitat for endangered fishes from floodplain habitats. Nonnative fishes of the Family Centrarchidae are known to occur in floodplain ponds, backwaters, beaver ponds, washes and irrigation drainage ditches throughout the Grand Valley reach of the Colorado River. The primary objectives of this project were to determine whether the origins and movements of centrarchids...

This report represents the CDOW sponsored boreal toad research done in 2003 by several researchers, and has been consolidated into a single document to make this information available to members of the Boreal Toad Recovery Team and other interested parties.

Lists the threatened and endangered species with notations on federal and state status.