#ColoradoRiver states seek solution for shrinking #water supply The #Gunnison Country Times #COriver #aridification

Updated Colorado River 4-Panel plot thru Water Year 2022 showing reservoirs, flows, temperatures and precipitation. All trends are in the wrong direction. Since original 2017 plot, conditions have deteriorated significantly. Brad Udall via Twitter: https://twitter.com/bradudall/status/1593316262041436160

Click the link to read the article on The Gunnison Country Times website (Bella Biondini). Here’s an excerpt:

“We can only save the Colorado River system if we act together,” Upper Colorado River Commissioner Becky Mitchell said in a press release. “The CBMA (Consensus-Based Modeling Alternative) approach appropriately distributes the burden across the Basin and provides safeguards for the Tribes, water users, and environmental values in the Upper Basin.” 

‘Who’s using all the water?’

Water use by basin has been historically uneven, but dry conditions along the Colorado River have continued to reduce the amount of water available for all users. While each basin is entitled to 7.5 million acre-feet per year under the 1922 compact, only the Lower receives that much. And its use has been steadily increasing.  At the same time, approximately 1.5 million acre-feet is lost to evaporation or in transit as it travels to large desert cities like Phoenix and Las Vegas. The Lower Basin gets to keep this bonus, and its total allocation is not charged with the losses.  Although Lower Basin users can pull more from large buckets of water upstream like Lake Powell in times of drought, those located at the headwaters of the Colorado River take their shortages directly from Mother Nature. Since 2019, use in the Upper Basin has declined by 22.5%, according to data from the Colorado Water Conservation Board.  The Upper Basin states have consistently argued that the source of the problem is overconsumption downstream, said John McClow, general counsel for the Upper Gunnison River Water Conservancy District. During the same time period that use in the Upper Basin declined, use in the Lower Basin increased by 7% —  equivalent to approximately 638,000 acre-feet or twice the current content of Blue Mesa Reservoir. 

“Who’s using all the water? It isn’t us,” McClow said. “But we have no choice. We can’t decide how much we’re consuming. We can only consume what melts into the rivers.”

[…]

Reclamation has committed $125 million to a voluntary consumption reduction program in the Upper Basin through a partnership with the Upper Colorado River Commission. The Commission will select projects for implementation beginning in 2023 — reimbursing selected water users per acre-foot of water saved for the greater system. Exactly how many users will participate is unknown.  There’s agreement that the Upper and Lower Basin states must work collectively to address the risk in the Colorado River system, said Executive Director Chuck Cullom.

“There’s also recognition that the Upper Basin activities are only effective if there’s companion action in the lower basin,” Cullom said. 

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