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R-Factor for Alaska

Data provided by  National Oceanic and Atmospheric Administration

The rainfall-runoff erosivity factor (R-Factor) quantifies the effects of raindrop impacts and reflects the amount and rate of runoff associated with the rain. The R-factor is one of the parameters used by the Revised Unified Soil Loss Equation (RUSLE) to estimate annual rates of erosion. This product is a raster representation of R-Factor derived from isoerodent maps published in the Runoff Estimates for Small Rural Watersheds and Development of a Sound Design method. Volume II. (Fletcher et al., 1977). Lines connecting points of equal rainfall erosivity are called isoerodents. The isoerodents plotted on a map of Alaska were digitized, then values between these lines were obtained by linear interpolation. The final R-Factor data are in raster GeoTiff format at 800 meter resolution in Albers Conic Equal Area,WGS84, WGS84.

About this Dataset

Updated: 2025-04-21
Metadata Last Updated: 2025-04-04T13:49:12.056Z
Date Created: N/A
Data Provided by:
Dataset Owner: N/A

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Title R-Factor for Alaska
Description The rainfall-runoff erosivity factor (R-Factor) quantifies the effects of raindrop impacts and reflects the amount and rate of runoff associated with the rain. The R-factor is one of the parameters used by the Revised Unified Soil Loss Equation (RUSLE) to estimate annual rates of erosion. This product is a raster representation of R-Factor derived from isoerodent maps published in the Runoff Estimates for Small Rural Watersheds and Development of a Sound Design method. Volume II. (Fletcher et al., 1977). Lines connecting points of equal rainfall erosivity are called isoerodents. The isoerodents plotted on a map of Alaska were digitized, then values between these lines were obtained by linear interpolation. The final R-Factor data are in raster GeoTiff format at 800 meter resolution in Albers Conic Equal Area,WGS84, WGS84.
Modified 2025-04-04T13:49:12.056Z
Publisher Name N/A
Contact N/A
Keywords EARTH SCIENCE > AGRICULTURE > SOILS > SOIL EROSION , EARTH SCIENCE > LAND SURFACE > EROSION/SEDIMENTATION > EROSION , EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER PROCESSES/MEASUREMENTS > RUNOFF , CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ALASKA , Environmental Monitoring , Erosion , R-Factor , RUSLE , RUSLE2 , Rainfall-Runoff Erosivity , Revised Universal Soil Loss Equation , Alaska , Coastal zone , DOC/NOAA/NOS/OCM > Office of Coastal Management, National Ocean Service, NOAA, U.S. Department of Commerce , OpenNSPECT , climatologyMeteorologyAtmosphere 
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