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Estimating Random Roughness in the Field

Book Cover of RUSLE

The nine examples presented here are taken from the U.S. Department of Agriculture (USDA) publication "Predicting Soil Erosion by Water: A Guide to Conservation Planning with the Revised Universal Soil Loss Equation (RUSLE)".

These examples of surface roughness require Adobe Acrobat.

Adobe Acrobat DocumentRandom Roughness of 0.25 inch (122 KB)
Adobe Acrobat DocumentRandom Roughness of 0.40 inch (123 KB)
Adobe Acrobat DocumentRandom Roughness of 0.65 inch (117 KB)
Adobe Acrobat DocumentRandom Roughness of 0.75 inch (111 KB)
Adobe Acrobat DocumentRandom Roughness of 0.85 inch (129 KB)
Adobe Acrobat DocumentRandom Roughness of 1.05 inch (131 KB)
Adobe Acrobat DocumentRandom Roughness of 1.60 inch (108 KB)
Adobe Acrobat DocumentRandom Roughness of 1.70 inch (312 KB)
Adobe Acrobat DocumentRandom Roughness of 2.15 inch (321 KB)
 



 

Additional Documents

Adobe Acrobat DocumentWEQ Ridge Roughness Values (7 KB)
— Memo from Gary Tibke, NRCS Conservation Agronomist, explaining ways to determine random roughness

 
Adobe Acrobat DocumentWEQ Random Roughness Guidelines (31 KB)
— Detailed explanation of random roughness. Includes table and chart for helping determine roughness in the field


 



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