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

As of SUNDAY: MAY 19 , 2019

BasinSnow Water Equivalent Percent of Median
KOOTENAI RIVER BASINPercentage Bar 59% 59%
FLATHEAD RIVER BASINPercentage Bar 78% 78%
UPPER CLARK FORK RIVER BASINPercentage Bar 87% 87%
BITTERROOT RIVER BASINPercentage Bar 85% 85%
LOWER CLARK FORK RIVER BASINPercentage Bar 79% 79%
JEFFERSON RIVER BASINPercentage Bar 87% 87%
MADISON RIVER BASINPercentage Bar 106% 106%
GALLATIN RIVER BASINPercentage Bar 109% 109%
MISSOURI HEADWATERSPercentage Bar 98% 98%
HEADWATERS MISSOURI MAINSTEMPercentage Bar 95% 95%
SMITH, JUDITH, AND MUSSELSHELL RIVER BASINSPercentage Bar 101% 101%
SUN, TETON AND MARIAS RIVER BASINSPercentage Bar 84*% 84*%
MISSOURI MAINSTEM RIVER BASINPercentage Bar 97*% 97*%
ST MARY AND MILK RIVER BASINSPercentage Bar 75*% 75*%
UPPER YELLOWSTONE RIVER BASINPercentage Bar 100% 100%
WIND RIVER BASIN (WYOMING)Percentage Bar 93% 93%
SHOSHONE RIVER BASIN (WYOMING)Percentage Bar 89% 89%
BIGHORN RIVER BASIN (WYOMING)Percentage Bar 85% 85%
TONGUE RIVER BASIN (WYOMING)Percentage Bar 90% 90%
POWDER RIVER BASIN (WYOMING)Percentage Bar 58% 58%
LOWER YELLOWSTONE RIVER BASINPercentage Bar 92% 92%

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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