Diverting the Colorado: 2 projects with Boulder County ties to bring more water to Front Range

July 11, 2011
By Laura Snider, Camera Staff Writer

“Both of these (water utilities) wrote an environmental statement that said there would be no impacts,” said Klancke, who also serves as the president of the Colorado River Headwaters Chapter of Trout Unlimited. “But the third-grade class at Fraser Elementary can tell you what happens when you take 80 percent of a river.”

Despite the fact that the two mitigation plans unanimously were approved by the Wildlife Commission, some environmental groups argue that they don’t go far enough to protect the Colorado River headwaters.

Mely Whiting, senior attorney with Trout Unlimited’s Colorado Water Project, said the plans don’t adequately address stream temperature problems and flushing flows. When the mountain snowpack begins to melt in the late spring and early summer, the influx of water “flushes” the rivers, scraping sediment off the streambed and, in some years, overflowing the banks and recharging adjacent wetlands.

Because both of the new projects plan to draw water during the periods of high runoff, Whiting said the rivers are being robbed of the critical flush. When flows stay low throughout the summer, the sediment builds up on the bottom of the rivers and destroys the habitat used by aquatic insects. The low flows also increase the danger that stream temperatures will climb higher earlier in the summer.

http://www.dailycamera.com/boulder-county-news/ci_18442684