Salazar OKs increases in Colorado River flows through Grand Canyon NP; releases will mimic natural periodic flooding

The Interior Department announced a plan on Wednesday to allow periodic increases in the flow of Colorado River water through the Grand Canyon, alleviating the environmental disruption caused by the construction of the Glen Canyon Dam in Arizona in the 1960s.

The secretary of the interior, Ken Salazar, said the plan would allow the river’s managers to release excess water — more than twice as much as average flows — through and over the hydroelectric dam at will to help propel silt and sediment downstream into the canyon. By mimicking the river’s original dynamics, Interior Department officials said, the flows could help restore the backwater ecosystems in which native fish are most at home.

full story

Non-native trout may be removed from Colorado in Grand Canyon NP

Do you enjoy reading Parkwire? It's a free service of the George Wright Society — please support us with a membership or donation! www.georgewright.org/join | www.georgewright.org/donate