Concerns Rise Over Diminished Snowpacks in the Western U.S.
As the winter progresses, concerns are mounting about the diminished snowpacks across the Western United States, which are crucial for maintaining water supplies in the region. Mountain snow typically serves as a vital water source during spring and summer, gradually melting to replenish rivers, reservoirs, and groundwater.
According to federal data, the current snow cover throughout the West is alarmingly low for this time of year. States including Arizona, Colorado, New Mexico, Utah, Idaho, Nevada, and Wyoming are experiencing snowpacks that contain less than 50% of their usual water content.
“They have extremely low snowpacks,” noted Dan McEvoy, a climatologist at the Desert Research Institute. “And that’s primarily due to the extremely warm temperatures we’ve had so far this winter, which isn’t isolated, really, anywhere — it’s spread across the entire Western U.S.”
These elevated temperatures have also led to more precipitation falling as rain rather than snow. McEvoy explained, “Rain during the middle of the winter isn’t uncommon, that happens all the time. But having it be this warm and this much rain is not common.”
The implications are particularly significant for the Colorado River Basin, a critical water source for millions of people in the West. Snowpacks in the basin’s headwaters function as natural reservoirs, gradually releasing water as temperatures rise. A shift from snow to rain results in rapid runoff, reducing the available water later in the year.
Despite the current dry conditions, McEvoy suggested that the snow season is not over yet, and late-winter storms could potentially alleviate the situation.
This report was created by the Mountain West News Bureau, which includes contributions from KUNR, Wyoming Public Media, Nevada Public Radio, Boise State Public Radio in Idaho, KUNC in Northern Colorado, KANW in New Mexico, Colorado Public Radio, KJZZ in Arizona, and NPR. Support is also provided by affiliate newsrooms across the region, with funding from the Corporation for Public Broadcasting and Eric and Wendy Schmidt.
