United States Department of Agriculture
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MONTANA SNOTEL Year-to-Date Precipitation Update Graph



As of SUNDAY: MAY 19 , 2019
BasinYear-to-Date Precipitation Percent of Average
KOOTENAI RIVER BASINPercentage Bar 78% 78%
FLATHEAD RIVER BASINPercentage Bar 90% 90%
UPPER CLARK FORK RIVER BASINPercentage Bar 99% 99%
BITTERROOT RIVER BASINPercentage Bar 101% 101%
LOWER CLARK FORK RIVER BASINPercentage Bar 89% 89%
JEFFERSON RIVER BASINPercentage Bar 99% 99%
MADISON RIVER BASINPercentage Bar 107% 107%
GALLATIN RIVER BASINPercentage Bar 115% 115%
MISSOURI HEADWATERSPercentage Bar 105% 105%
HEADWATERS MISSOURI MAINSTEMPercentage Bar 106% 106%
SMITH, JUDITH, AND MUSSELSHELL RIVER BASINSPercentage Bar 105% 105%
SUN, TETON AND MARIAS RIVER BASINSPercentage Bar 87% 87%
MISSOURI MAINSTEM RIVER BASINPercentage Bar 98% 98%
ST MARY AND MILK RIVER BASINSPercentage Bar 85% 85%
UPPER YELLOWSTONE RIVER BASINPercentage Bar 107% 107%
WIND RIVER BASIN (WYOMING)Percentage Bar 90% 90%
SHOSHONE RIVER BASIN (WYOMING)Percentage Bar 109% 109%
BIGHORN RIVER BASIN (WYOMING)Percentage Bar 96% 96%
TONGUE RIVER BASIN (WYOMING)Percentage Bar 83% 83%
POWDER RIVER BASIN (WYOMING)Percentage Bar 83% 83%
LOWER YELLOWSTONE RIVER BASINPercentage Bar 91% 91%

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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