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MONTANA SNOTEL Snow Water Equivalent Update Graph

As of THURSDAY: OCTOBER 21 , 2021

BasinSnow Water Equivalent Percent of Median
KOOTENAI RIVER BASIN*
FLATHEAD RIVER BASINPercentage Bar 71*% 71*%
UPPER CLARK FORK RIVER BASINPercentage Bar 62*% 62*%
BITTERROOT RIVER BASINPercentage Bar 50*% 50*%
LOWER CLARK FORK RIVER BASIN*
JEFFERSON RIVER BASINPercentage Bar 213*% 213*%
MADISON RIVER BASINPercentage Bar 177*% 177*%
GALLATIN RIVER BASINPercentage Bar 147*% 147*%
MISSOURI HEADWATERSPercentage Bar 162*% 162*%
HELENA VALLEYPercentage Bar 125*% 125*%
SMITH, JUDITH, AND MUSSELSHELL RIVER BASINSPercentage Bar 100*% 100*%
SUN, TETON AND MARIAS RIVER BASINSPercentage Bar 80*% 80*%
MISSOURI MAINSTEM RIVER BASINPercentage Bar 95*% 95*%
ST MARYS RIVER BASINPercentage Bar 157*% 157*%
MILK RIVER BASIN*
UPPER YELLOWSTONE RIVER BASINPercentage Bar 87*% 87*%
WIND RIVER BASIN (WYOMING)Percentage Bar 575*% 575*%
SHOSHONE RIVER BASIN (WYOMING)Percentage Bar 25*% 25*%
BIGHORN RIVER BASIN (WYOMING)Percentage Bar 162*% 162*%
TONGUE RIVER BASIN (WYOMING)*
POWDER RIVER BASIN (WYOMING)*
LOWER YELLOWSTONE RIVER BASINPercentage Bar 162*% 162*%

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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