Despite near-normal snowpack, key #ColoradoRiver reservoir is expected to see lower spring flows — The #Denver Post

Westwide SNOTEL basin-filled map March 20, 2025 via the NRCS.

Click the link to read the article on The Denver Post website (Elise Schmelzer). Here’s an excerpt:

March 20, 2025

Snowpack across the entire Upper Colorado River Basin sits at 95% of median as the winter draws to a close, according to a report released this week by the Colorado Basin River Forecast Center. But only about 4.5 million acre-feet of water are expected to flow into Lake Powell as snow melts across the Upper Basin — 70% of the median amount recorded between 1991 and 2020. That means there is little hope that spring runoff into the crucial river that makes modern life possible across the Southwest will significantly raise water levels in the region’s two major reservoirs: Lake Powell and Lake Mead…

March 1, 2025 seasonal water supply forecast summary. Map | List

Below-normal runoff is becoming a norm that must be dealt with, Miller said. Research shows that warmer temperaturesdrier soils that suck up water and more variable precipitation — all fueled by climate change — have significantly reduced runoff in the Colorado River Basin. Those are among factors that contribute to the discrepancy between normal snowpack and below-normal inflow to Lake Powell, Miller said.

“As a basin, we’re having to face the fact that there is more demand for water than the river can provide,” he said.

Udall/Overpeck 4-panel Figure Colorado River temperature/precipitation/natural flows with trend. Lake Mead and Lake Powell storage. Updated through Water Year 2024. Credit: Brad Udall

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