United States Department of Agriculture
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Erosion Tables

Table 6: Montana 2003 Water (Sheet and Rill) and Wind Erosion on Cropland
  Erosion in Tons per Year Margin of Error +- Erosion in Tons per Acre per Year Margin of Error +- Percent of Total Erosion
Total Erosion  59,409,900        
Water Erosion  16,670,800  1,797,000  1.1  0.1  28.1
Wind Erosion  42,739,100  4,727,900  2.9  0.3  71.9

Table 7: Montana 2003 Highly Erodible (HEL) Cropland
  Acres Margin of Error +- Percent of Total HEL Cropland
Total HEL Cropland 8,753,100 754,600  
HEL Cropland Eroding at or below Soil Loss Tolerance Rates 5,770,300 507,700 66.0
HEL Cropland Eroding above Soil Loss Tolerance Rates 2,982,800 504,700 34.0
 
Table 8: Montana 2003 Non-Highly Erodible (HEL) Cropland
  Acres Margin of Error +- Percent of Total Non-HEL Cropland
Total Non-HEL Cropland 5,773,500 670,100  
Non-HEL Cropland Eroding at or below Soil Loss Tolerance Rates 5,318,400 644,700 92.1
HEL Cropland Eroding above Soil Loss Tolerance Rates 455,100 206,000 7.9

Last Modified: 09/05/2008