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Guides for Editing Soil Interpretations and Qualities

This table provides links to national and local guidance criteria for soil interpretations and qualities. Many of these links are to the National Soil Survey Handbook (NSSH). Some are links to supplemental guides containing local criteria that may be used in lieu of the national criteria in the NSSH. Use of local criteria is encouraged for NASIS interpretations and qualities, but the user is cautioned to not use any supplemental guide outside of the geographic area for which it was developed.

A document in the following table requires Adobe Acrobat. Once you have saved the file to a local drive, open Adobe Acrobat then open the saved file on your local drive.

 
Editing Soil Interpretations and Qualities
Soil Interpretation or Quality NSSH Guide Supplemental Guide
AASHTO Group Classification and Index
(Engineering Classification)		 618.21 Use NASIS calculation for AASHTO Group Index. Use NASIS National UTIL Report: Comparison of Unified and AASHTO Stored versus Calculated to "calculate" or check AASHTO RV
Corrosion 618.12  
Drainage Class 618.17 Montana Guide: Drainage Class
Erosion, Accelerated, Kind 618.22  
Erosion Class 618.23  
Excavation Difficulty Classes 618.24  
Frost Action, Potential 618.40  
Hydrologic Group 618.36  
Land Capability Classification 622.02 Montana Guide: Placing Soils in Capability Classes (PDF; 37.4 KB)
Land Capability Classification Subclasses 622.02 Montana Guide: Placing Soils in Land Capability Subclasses
Soil Erodibility Factors (Kf and Kw) 618.55 Montana Guide: Soil Erodibility Factor Kf
Montana Guide: Soil Erodibility Factor Kw
Soil Erodibility Factors for WEPP 618.56  
Soil Slippage Hazard 618.58  
T Factor 618.62 Montana Guide: T Factor
Unified Soil Classification (Engineering Classification) 618.21 Use NASIS National UTIL Report: Comparison of Unified and AASHTO Stored versus Calculated to "calculate" or check Unified RV
Universal Soil Loss Equation (USLE) 618.55
WEPP, Soil Erodibility Factors for 618.56  
Wildlife Habitat 622.09  
Wind Erodibility Group and Index 618.72  

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Last Modified: 06/04/2008