Montana Office, USDA Natural Resources Consevation Service

Montana REAP Data Access

Statewide edge-matched REAP data is now available. Check for Updated files.

June 29, 2009 updates to Big Horn, Carter, Powder river, Richland, Roosevelt and Wibaux County data.

Public access to this data represents a joint effort by the Montana Natural Resources Conservation Service (NRCS) and the Natural Resource Information System of the Montana State Library. As of Sept. 19, 2008 all Montana counties were updated with the edge-matched statewide version.

Each county dataset consists of a 10 meter resolution grid with the relative effective annual precipitation in both centimeters and inches. The data provided here has been calibrated for individual counties and edge-matched to provide consistent values for statewide uses.

The table below provides access to the geographic data components of the NRCS REAP data. To download a data file, click the colored icon under the coordinate data type that you want. The REAP data was developed in UTM NAD83 coordinates and should be used in this coordinate system for the most accurate representation of the data. Using the projected data should only be done with the understanding that values will shift and analytical results will vary.

The REAP data is also provided in State Plane coordinates to accomodate State of Montana requirements for distribution of geospatial data. To download click the colored icon under the coordinate system column heading. The Time Stamp is an indicator of when the data were last updated. The REAP data values were developed in centimeters. The value in inches was calculated using a conversion factor of 0.3937007874. Refer to the conversion table provided to associate the two values.

REAP Data for County

REAP GRID Raster Data

FIPS County Name - Map PDF File
To download click on county name.
UTM83 SPC Time Stamp
MT001 BEAVERHEAD COUNTY, MONTANA April 20 2008
MT003 BIG HORN COUNTY, MONTANA February 28 2011
MT005 BLAINE COUNTY, MONTANA April 20 2008
MT007 BROADWATER COUNTY, MONTANA April 20 2008
MT009 CARBON COUNTY, MONTANA April 20 2008
MT011 CARTER COUNTY, MONTANA June 29 2009
MT013 CASCADE COUNTY, MONTANA April 20 2008
MT015 CHOTEAU COUNTY, MONTANA April 20 2008
MT017 CUSTER COUNTY, MONTANA February 28 2011
MT019 DANIELS COUNTY, MONTANA Sept 19 2008
MT021 DAWSON COUNTY, MONTANA April 20 2008
MT023 DEER LODGE COUNTY, MONTANA April 20 2008
MT025 FALLON COUNTY, MONTANA Jan 21 2009
MT027 FERGUS COUNTY, MONTANA April 20 2008
MT029 FLATHEAD COUNTY, MONTANA April 20 2008
MT031 GALLATIN COUNTY, MONTANA April 20 2008
MT033 GARFIELD COUNTY, MONTANA April 20 2008
MT035 GLACIER COUNTY, MONTANA April 20 2008
MT037 GOLDEN VALLEY COUNTY, MONTANA April 20 2008
MT039 GRANITE COUNTY, MONTANA April 20 2008
MT041 HILL COUNTY, MONTANA Sept 19 2008
MT043 JEFFERSON COUNTY, MONTANA April 20 2008
MT045 JUDITH BASIN COUNTY, MONTANA April 20 2008
MT047 LAKE COUNTY, MONTANA April 20 2008
MT049 LEWIS AND CLARK COUNTY, MONTANA April 20 2008
MT051 LIBERTY COUNTY, MONTANA April 20 2008
MT053 LINCOLN COUNTY, MONTANA April 20 2008
MT057 MADISON COUNTY, MONTANA April 20 2008
MT055 MCCONE COUNTY, MONTANA April 20 2008
MT059 MEAGHER COUNTY, MONTANA April 20 2008
MT061 MINERAL COUNTY, MONTANA April 20 2008
MT063 MISSOULA COUNTY, MONTANA April 20 2008
MT065 MUSSELSHELL COUNTY, MONTANA June 22 2009
MT067 PARK COUNTY, MONTANA April 20 2008
MT069 PETROLEUM COUNTY, MONTANA April 20 2008
MT071 PHILLIPS COUNTY, MONTANA Sept 19 2008
MT073 PONDERA COUNTY, MONTANA April 20 2008
MT075 POWDER RIVER COUNTY, MONTANA February 28 2011
MT077 POWELL COUNTY, MONTANA April 20 2008
MT079 PRAIRIE COUNTY, MONTANA April 20 2008
MT081 RAVALLI COUNTY, MONTANA April 20 2008
MT083 RICHLAND COUNTY, MONTANA June 29 2009
MT087 ROSEBUD COUNTY, MONTANA February 28 2011
MT085 ROOSEVELT COUNTY, MONTANA June 29 2009
MT089 SANDERS COUNTY, MONTANA April 20 2008
MT091 SHERIDAN COUNTY, MONTANA Sept 19 2008
MT093 SILVER BOW COUNTY, MONTANA April 20 2008
MT095 STILLWATER COUNTY, MONTANA April 20 2008
MT097 SWEET GRASS COUNTY, MONTANA April 20 2008
MT099 TETON COUNTY, MONTANA April 20 2008
MT101 TOOLE COUNTY, MONTANA April 20 2008
MT103 TREASURE COUNTY, MONTANA April 20 2008
MT105 VALLEY COUNTY, MONTANA April 20 2008
MT107 WHEATLAND COUNTY, MONTANA April 20 2008
MT109 WIBAUX COUNTY, MONTANA June 29 2009
MT111 YELLOWSTONE COUNTY, MONTANA April 20 2008
YELLOWSTONE NATIONAL PARK April 20 2008
  • Montana State Library
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  • Helena, MT 59620-1800
  • Phone: (406) 444-3115
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  • msl.mt.gov