Water plan’s twin goals of storage, conservation debated
The Colorado Water Plan set to be released Nov. 19 will include a goal of developing 400,000 acre-feet of additional water storage in Colorado and a corresponding goal of reducing water use in the state by 400,000 acre-feet.
“The gap between supply and demand that we are forecasting is 560,000 acre feet by 2050, and if you add up 400,000 acre feet in conservation and 400,000 acre feet in storage, we zero out the gap,” said James Eklund, the director of the Colorado Water Conservation Board, which has been preparing the water plan for the last two years.
“And,” Eklund said, “while we are not saying which specific projects are going to have to come on line, we are saying that as an entire state we’ve got to work the problem of the gap from both the supply side and the demand side.”
Eklund said the goal of developing 400,000 acre-feet of additional water storage by 2050 was realistic.
As examples, Eklund cited, without officially endorsing, the proposed Moffat, Windy Gap and NISP projects, all of which are under review and include expanded reservoir storage.
Gross Reservoir, southwest of Boulder, is proposed to be enlarged to hold an additional 77,000 acre-feet of water as part of the expansion of the Moffat Collection System.
The proposed Chimney Hollow Reservoir, part of the Windy Gap Firming Project, would add 90,000 acre-feet of storage southwest of Loveland.
The proposed Glade and Galeton reservoirs, which are at the core of NISP, or the Northern Integrated Supply Project, would add 170,000 and 45,000 acre feet of new storage, respectively, near Fort Collins.
And the planned expansion of Chatfield Reservoir, south of Denver, of which the CWCB is an official sponsor, would add 20,600 acre-feet of storage.
In all, that’s 402,600 acre-feet of proposed additional storage on the Front Range.
“We think the projects on the books are going to get us most of the way there,” Eklund said. “So I don’t see the storage goal as pie-in-the-sky. And I don’t see it requiring some really big nasty project that somebody has been worrying about emerging.”
W. SLOPE NEEDS STORAGE
He also pointed to the growing potential to store water in underground aquifers near Denver as an additional opportunity. And, he noted, the Front Range “does not have a copyright on the idea of more storage.”
“The Western Slope needs more storage, too,” Eklund said. “They have gaps, municipal and industrial supply and demand gaps, just the like the folks on the Front Range. “
But the storage projects now in process may not be enough, or happen fast enough, for many Front Range water providers and planners, at least judging by the comment letters sent to the CWCB on the draft water plan by a Sept. 17 deadline.
Colorado Springs Utilities, in a Sept. 17 comment letter, told the CWCB it was “disappointed with the relative lack of discussion on storage” in the water plan.
“While we appreciate the plan’s focus on enlarging existing storage, we believe more attention should be paid to developing storage of all types, e.g., on-channel storage, off-channel storage, gravel pit storage, etc.,” wrote M. Patrick Wells, the managing engineer for water resource planning for CSU.
“The plan should include an affirmative statement that it is state policy to develop additional storage,” Wells said. “This cannot be stressed enough, and Colorado needs to do as much as it can to secure as much additional storage of all types within its borders as is possible.”
The city of Westminster, which sits between Denver and Boulder, “believes that many of the components of the water plan will be successful only if there is the political will to create more water storage, including identifying new storage locations, expanding existing storage and encouraging regional storage solutions,” Westminster Mayor Herb Atchison wrote in a Sept. 17 letter.
And John Kaufman, the general manager of Centennial Water and Sanitation District, which serves customers south of Denver, told the CWCB “more storage, particularly on the East Slope of the Continental Divide, is needed. And creative ways to bring more West Slope water to the East Slope should be explored in a manner that also benefits West-Slope interests.”
Kaufman also said in his Sept. 17 letter that the water plan “will not achieve full success if conservation is viewed as the keystone of the plan.”
While there is abundant enthusiasm for additional storage among Front Range water providers, there is less support for, and even belief in, the CWCB’s goal of conserving an additional 400,000 acre-feet, which has been dubbed a “stretch goal” during the development of the water plan.
Aurora Water, for example, questioned the assumptions used by CWCB in reaching its 400,000 acre-foot goal.
Joe Stibrich, Aurora Water’s water resources policy manager told the CWCB in a Sept. 17 letter he understood CWCB added up 154,000 acre-feet of potential “passive conservation” savings, 166,000 acre-feet of “active conservation” savings, and 80,000 acre-feet of “aspirational stretch” savings to reach its goal.
Stibrich said “additional work is needed to validate the numbers” and that it would be more useful to “define potential saving in a range” such as 320,000 to 400,000 acre-feet.
And he said CWCB should make sure people know its “stretch goal” is just aspirational.
“By its very nature, a stretch goal is aspirational and is not achievable under current policies and with existing technology and programs,” Stibrich said.
And the Front Range Water Council, made up of the largest water providers in Colorado, told the CWCB that reaching the conservation goal couldn’t be expected to come before new storage.
“The plan should reject the notion that project approvals should be contingent of first meeting any sort of conservation goals or targets,” the letter from the council said. “Passive and active conservation savings occurs over time as a result of technological innovation, education, market penetration and other factors and as a result, does not naturally lend itself to being ‘sequenced’ ahead of other water supply options. “
Burt Knight, Greeley’s director of water and sewer, bluntly warned against relying on conservation.
“We cannot conserve our way out of the anticipated gap, and the conservation mandates proposed in this draft could have a domino effect on our environment, our economy, our public health and our quality of life,” Knight wrote.
Offering another perspective, Richard Van Gytenbeek, the outreach coordinator for Trout Unlimited’s Colorado Water Project, said the state should go beyond the 400,000 acre-foot goal in the plan and set a goal of saving 460,000 acre-feet.
“A stretch goal, by its very definition, should be aggressive and go beyond what we know we can do using the types of strategies already in place,” Van Gytenbeek told the CWCB in a Sept 17 letter. “Colorado needs to be aggressive and discover how far we truly can go in water efficiency.”
And in addition to the full-throated call for more storage in the comment letters to the CWCB, there are also words of caution about new dams and reservoirs.
“Reservoirs can provide beneficial stream flows downstream, but they can also do the opposite,” said Ken Neubecker, the assistant director for the Colorado River Program at American Rivers, in a Sept. 14 comment letter.
While Neubecker concedes that additional water storage “must be considered,” he told the CWCB ”we must also recognize that politically such storage will be difficult.”
“It is easy for politicians and roundtables to demand more storage,” Neubecker said, “until they identify the specific ‘backyard’ they want to fill, the source they wish to deplete and the existing uses they intend to deprive.”
Aspen Journalism is collaborating with the Glenwood Springs Post Independent and The Aspen Times on coverage of water and rivers in Colorado. More at http://www.aspenjournalism.org.
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