The Colorado River Water Conservation District is opposing a water developer's plan to divert water from the Green River in Utah and pipe it to growing Front Range communities.

The River District formally opposed the proposal by Aaron Million and Water Horse Resources LLC for a Utah water right to divert 55,000 acre-feet of water annually from the Green River and pipe it to the fast-growing metro area.

Million's proposal is similar to, but smaller, than a previous proposal to pump water out of Flaming Gorge Reservoir in Wyoming and pipe it across the Continental Divide.

The River District complained in a filing with the Utah Division of Water Rights that Million's proposal was speculative in that he had failed to specify a use or need for the water and noted that he should first obtain a Colorado water right.

Million's project also would adversely impact the ability of the state of Colorado, the River District and other public entities to plan for the development of Colorado's share of Colorado River water, and so his application "would be detrimental to the public welfare."

Million called it "unfortunate that they don't take a broader view" of how to manage water in the arid West.

While Colorado is struggling to deal with the effects of drought this year, snowpack in the Wyoming mountains that feed the Green River is 140 percent of normal.

"There could actually be a chance to alleviate (low flows) in the Fraser and Blue rivers and increase flows in the Colorado mainstream" if his project were in place, Million said.

Under Interior Department estimates, about 500,000 acre-feet of water remain to be appropriated in the Colorado River system and his project could reduce stress on the headwaters of the Colorado River, Million said.

The River District's objection to a Utah water right for the project also noted that Million had not demonstrated he could operate the plan in compliance with the Colorado water plan's conceptual framework on transmountain diversions.

The current proposal, like Million's last one, is predicated on the idea that Colorado has a right to water from the Green River because it takes a "41-mile dogleg" into Colorado after leaving Wyoming and heading into Utah.

The River District urged the Utah agency to reject Million's request unless he can prove the project won't "adversely impact existing water uses in the Upper Basin" of the river and that it would not be detrimental to the public welfare.

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