Snow Water Equivalent Watershed Maps and Reports
Snow water equivalent (SWE) values are derived from measurements taken at snow course and SNOTEL data stations. The amount of water contained in the snow columns are measured and expressed as percent of average and summarized by watershed. Snow water equivalent maps are available for the first of each month from January through June beginning in 2002.
View a map by choosing the month and year of interest from the dropdown box or by selecting from the thumbnails below. Asterisk (*) denotes missing map.
Legend (% of Normal)
Extremely Above Average (Over 150)
Much Above Average (131-150)
Much Below Average (51-70)
Extremely Below Average (Below 51)