Sandy beaches have reappeared more than 100 miles (160 kilometers) downstream of Glen Canyon Dam, an early measure of success for a massive flood last week designed to rebuild habitat along the Colorado River in the iconic Grand Canyon.
However, it will be weeks before scientists know whether the six days of high flows realized the Department of the Interior’s goals of moving more than 500,000 metric tons of sediment down the canyon. The department ordered the flood, released in a gush from the Glen Canyon Dam starting Nov. 19, to help create beaches and back eddies for campers, rafters and native fish. The gush not so good for those living in their van down by the river.