SALEM -- You wouldn't know it from appearances, but Oregon's only national park has been losing snow.
Crater Lake averaged 460 inches of snow each year between 2000 and 2013.
Though that's a lot of powder, it's much less than what the park got in the 1930s and 1940s -- when the average was more than 600 inches per year.
Crater Lake park ranger Dave Grimes tells the Statesman Journal newspaperthat the decline has been very gradual.
Snowmelt provides water for Crater Lake and seasonal water to the Rogue and Klamath basins for irrigation, fish, plants and wildlife.