CURRENT CONDITIONS
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1.
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Montana County Drought Status
map and county table.
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2.
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U.S. Drought Monitor map updated weekly includes text
summary.
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3.
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U.S. Drought Monitor Current Condition maps of
indices on one page.
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4.
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Current Year Water Data
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5.
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Montana Snow and Water maps 2001-2008
of Mountain Snow Water Equivalents, Monthly Stream Flow Prospects,
and Surface Water Supply
Index.
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6.
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U.S. Soil Moisture Monitoring
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7.
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Stream flow
in Montana
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8.
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Surface Water
in Montana
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9.
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Montana Bureau of Mines and Geology Ground Water-Information Center
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10.
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Montana Moisture Status
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11.
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Drought
Information-Billings, MT
area
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12.
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Drought
Information-Great Falls, MT
area
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DROUGHT
STATISTICS/MEASUREMENTS
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1.
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Palmer Drought Severity Index (PDSI)
is a water balance index that considers water supply (precipitation), demand (evapotranspiration) and loss (runoff).
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2.
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Standardized Precipitation Index (SPI)
is a probability index that considers only precipitation.
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3.
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Crop Moisture Index (CMI) measures moisture supply in the short term across major crop-producing regions and is not intended to assess long-term droughts.
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4.
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Surface Water Supply Index
(SWSI)
maps produced by NRIS/NRCS.
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6.
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National Fire Danger Rating
(NFDRS)
for Dead Fuel Moisture maps that display ambient environmental conditions to determine fire potential.
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7.
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Keetch-Byram Drought Index (KBDI)
is a drought index for fire potential assessment representing the net effect of evapotranspiration and precipitation in producing cumulative moisture deficiency in deep duff and upper soil layers.
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FUTURE FORECASTS
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U.S. Drought Monitor Forecast maps for climate, drought, stream flow, Palmer Drought Severity Index, Soil Moisture, etc.
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