What is happening with snowpack in your state?

Select any one of the states to learn more about this year’s trends in snowpack.

Why is snowpack important to the West?

Snowpack in the West is essential to creating healthy flowing rivers that support recreation, tourism, and habitat for thousands of species. Communities also rely on the snowpack to fill reservoirs that supply cities and towns with a steady supply of drinking water year-round.

What are the long term trends in snowpack in the West?

“Since 1915, the average snowpack in western states has declined by between 15 and 30 percent …. and the amount of water lost from that snowpack reduction is comparable in volume to Lake Mead, the West’s largest manmade reservoir.”

~ 2018 study in NPJ Climate and Atmospheric Science

Warmer temperatures during winter months due to increased greenhouse gases are a major factor in this downward trend in snowpack. However, the impact of climate change on snowpack in the West is felt not only during winter months. Less snowpack means less water in our rivers and streams during the spring and more intense droughts during the summer.

Learn More About Our Work to Protect the West's Water

Healthy Rivers & Lakes Program

Our Healthy Rivers & Lakes program staff work for smarter solutions to meet water demands for our communities while keeping enough water to make rivers and lakes healthy.

What are the major trends in snowpack in the West this year?

We can monitor how current snowpack will impact streamflow later in the year by measuring something called Snow Water Equivalent (SWE). SWE is the amount of water contained within the snowpack. The Natural Resources Conservation Service maps below show percentage of SWE on the first of every month compared to what has been considered normal over an almost 30-year period.

  • Any basin colored in red, orange, or yellow means there is currently less snowpack than what is considered normal.
  • Any basin colored in green or blue means there is currently the same or more snowpack than what is considered normal.

snowpack in arizona - october 2019 snowpack in arizona - november 2019 snowpack in arizona - december 2019 snowpack in arizona - january 2020 snowpack in arizona - february 2020 snowpack in arizona -march 2020 snowpack in arizona - april 2020 snowpack in arizona - may 2020 snowpack in arizona - june 2020 snowpack in arizona - july 2020

Snowpack in Colorado

SWE for the 2019-2020 Colorado Water Year

snowpack in colorado - october 2019 snowpack in colorado - november 2019 snowpack in colorado - december 2019 snowpack in colorado - february 2020 snowpack in colorado - february 2020 snowpack in colorado - april 2020 snowpack in colorado - may 2020 snowpack in colorado - june 2020

Snowpack in Arizona

SWE for the 2019-2020 Arizona Water Year

snowpack in arizona - october 2019 snowpack in arizona - november 2019 snowpack in arizona - december 2019 snowpack in arizona - january 2020 snowpack in arizona - february 2020 snowpack in arizona -march 2020 snowpack in arizona - april 2020 snowpack in arizona - may 2020 snowpack in arizona - june 2020 snowpack in arizona - july 2020

Snowpack in New Mexico

SWE for the 2019-2020 New Mexico Water Year

snowpack in new mexico - october 2019 snowpack in new mexico - november 2019 snowpack in new mexico - december 2019 snowpack in new mexico - january 2020 snowpack in new mexico - february 2020 snowpack in new mexico - march 2020 snowpack in new mexico - april 2020 snowpack in new mexico - may 2020 snowpack in new mexico - june 2020 snowpack in new mexico - july 2020

Snowpack in Utah

SWE for the 2019-2020 Utah Water Year

snowpack in utah - october 2019 snowpack in utah - november 2019 snowpack in utah - december 2019 snowpack in utah - january 2020 snowpack in utah - february 2020 snowpack in utah - march 2020 snowpack in utah - april 2020 snowpack in utah - may 2020 snowpack in utah - june 2020 snowpack in utah - july 2020

Snowpack in Nevada

SWE for the 2019-2020 Nevada Water Year

snowpack in nevada - october 2019 snowpack in nevada - november 2019 snowpack in nevada - december 2019 snowpack in nevada - december 2019 snowpack in nevada - february 2020 snowpack in nevada - march 2020 snowpack in nevada - april 2020 snowpack in nevada - may 2020 snowpack in nevada - june 2020 snowpack in nevada - july 2020

Snowpack in Wyoming

SWE for the 2019-2020 Wyoming Water Year

snowpack in wyoming - october 2019 snowpack in wyoming - november 2019 snowpack in wyoming - december 2019 snowpack in wyoming - january 2020 snowpack in wyoming - february 2020 snowpack in wyoming - april 2020 snowpack in wyoming - may 2020 snowpack in wyoming - june 2020 snowpack in wyoming - july 2020

Snowpack in Montana

SWE for the 2019-2020 Montana Water Year

snowpack in montana - october 2019 snowpack in montana - november 2019 snowpack in montana - december 2020 snowpack in montana - january 2019 snowpack in montana - february 2020 snowpack in montana - march 2020 snowpack in montana - april 2020 snowpack in wyoming - may 2020 snowpack in montana - june 2020 snowpack in montana - july 2020
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Check out our Strategic Engagement Manager’s presentation on snowpack from the Yampa Valley Sustainability Council’s Talking Green!

March 26: Snowpack and River Health: The Impacts of Climate Change

(WRA PDF Presentation)