United States Department of Agriculture
Natural Resources Conservation Service
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MONTANA SNOTEL Snow Water Equivalent Update Graph

As of TUESDAY: MAY 22 , 2018

BasinSnow Water Equivalent Percent of Median
KOOTENAI RIVER BASINPercentage Bar 111% 111%
FLATHEAD RIVER BASINPercentage Bar 141*% 141*%
UPPER CLARK FORK RIVER BASINPercentage Bar 159% 159%
BITTERROOT RIVER BASINPercentage Bar 148% 148%
LOWER CLARK FORK RIVER BASINPercentage Bar 136% 136%
JEFFERSON RIVER BASINPercentage Bar 116% 116%
MADISON RIVER BASINPercentage Bar 111% 111%
GALLATIN RIVER BASINPercentage Bar 119% 119%
MISSOURI HEADWATERSPercentage Bar 116% 116%
HEADWATERS MISSOURI MAINSTEMPercentage Bar 141% 141%
SMITH, JUDITH, AND MUSSELSHELL RIVER BASINSPercentage Bar 89% 89%
SUN, TETON AND MARIAS RIVER BASINSPercentage Bar 217*% 217*%
MISSOURI MAINSTEM RIVER BASINPercentage Bar 128*% 128*%
ST MARY AND MILK RIVER BASINSPercentage Bar 114*% 114*%
UPPER YELLOWSTONE RIVER BASINPercentage Bar 129% 129%
WIND RIVER BASIN (WYOMING)Percentage Bar 106*% 106*%
SHOSHONE RIVER BASIN (WYOMING)Percentage Bar 123% 123%
BIGHORN RIVER BASIN (WYOMING)Percentage Bar 111% 111%
TONGUE RIVER BASIN (WYOMING)Percentage Bar 54% 54%
POWDER RIVER BASIN (WYOMING)Percentage Bar 73*% 73*%
LOWER YELLOWSTONE RIVER BASINPercentage Bar 97% 97%

Legend: Percentage Bar Below 70% <70% Percentage Bar 70-90% 70-90% Percentage Bar 91-110% 91-110% Percentage Bar 111-130% 111-130% Percentage Bar Above 130% >130%

* = Data are not available or data may not provide a valid measure of conditions for over half of the sites within the basin.

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