New study says Arapahoe County sitting pretty on water supplies, for now — Jerd Smith (Fresh Water News)

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Click the link to read the article on the Water Education Colorado website (Jerd Smith):

November 21, 2024

Arapahoe County has enough water to meet its needs through 2050, according to a new study, but major steps will need to be taken to reduce future demand and protect the county’s groundwater supplies.

Arapahoe County Commissioner Jeff Baker, in a statement, said the study is a cautionary tale, showing that while existing supplies generate 141,000 acre-feet of water each year, future growth could strain those supplies.

“If they want to build, they need to make sure there is enough water to provide adequate water resources to people. This is not a green light to develop,” Baker said.

Arapahoe County is home to 656,000 people, who use 83,400 acre-feet of water a year. By 2050, those numbers are expected to soar, with population topping 900,000 and water demand increasing to as much as 116,000 acre-feet a year, according to the new report.

Water stored in Colorado’s Denver Basin aquifers, which extend from Greeley to Colorado Springs, and from Golden to the Eastern Plains near Limon, does not naturally recharge from rain and snow and is therefore carefully regulated. Courtesy U.S. Geological Survey.

As with other counties, Arapahoe County does not deliver water, relying instead on 12 separate water districts and agencies to supply its communities, according to Anders Nelson, a spokesman for the county. Some of its supplies come from renewable surface water — primarily runoff from mountain snowpack — while the more rural parts of the county rely on groundwater.

The study outlines several steps that should be taken to protect the fast-growing community southeast of Denver from future water shortages. The county will require developers to document adequate water for new construction projects; implement county-wide water-efficient landscaping rules, and encourage regional partnerships and water sharing agreements.

More by Jerd SmithJerd Smith is editor of Fresh Water News. She can be reached at 720-398-6474, via email at jerd@wateredco.org or @jerd_smith.

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