Fluvial Hazard Zone mapping represents a significant and necessary step forward in identifying and addressing hazards posed by flood events. Flood hazard reduction, in the long-term, will primarily be measured by our ability to solve problems at the watershed and river corridor scale, and secondarily, by how we resolve conflicts at individual sites. From a physical standpoint, this means recognizing that rivers transport and deposit water and sediment...

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