This report summarizes recent observations and field measurements of channel change in selected reaches of the Colorado River near Grand Junction Colorado This work was undertaken to assess effects of recent high flows on sites that have been monitored as part of on-going fish habitat studies.

The Colorado River is one of many rivers in the United States where populations of native fish are endangered and nearing extinction.

There are four endangered fish species in the Upper Colorado River: the bonytail chub, the Colorado squawfish, the humpback chub, and the razorback sucker. Habitat management is one of five elements of the Recovery Implementation Program for Endangered Fish Species in the Upper Colorado River Basin which is a cooperative effort by the U.S. Fish and Wildlife Service, the U.S. Bureau of Reclamation, the states of Colorado, Wyoming, and Utah, and water...