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Guides for Editing Soil Properties

This table provides links to national and local guidance criteria for property data. Many of these links are to the National Soil Survey Handbook (NSSH). Some soil properties have 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.

Some documents in the following table requires Acrobat Reader. Once you have saved the file to a local drive, open Acrobat Reader then open the saved file on your local drive. If you encounter problems with the file provided on this page, please contact Soil Survey at 406-587-6730.

Guides for Editing Soil Properties
Soil Property NSSH Guide Supplemental Guide
Albedo, Dry 618.4 Chart for Albedo, Dry
Available Water Capacity 618.6 Montana Guide: Available Water Capacity (PDF; 36 KB)
Bulk Density, One-Third Bar 618.7 Montana Guide: Bulk Density (PDF; 264KB)
Calcium-Carbonate Equivalent 618.10 Enter 0 if none
Cation-Exchange Capacity, NH4OAc pH7 618.11 Use NASIS Horizon CEC/ ECEC Calculation
Effective Cation-Exchange Capacity 618.19 Use NASIS Horizon CEC/ECEC Calculation
Elevation 618.22  
Extractable Acidity 618.28 Use NASIS Horizon Extractable Acidity Calculation
Extractable Aluminum 618.29  
Flooding Frequency, Duration, and Month 618.30 Flooding and Ponding Frequency Data Population
Fragments (rock, pararock, and wood) in the Soil 618.31  
Free Iron Oxides 618.32  
Frost-Free Period (Climatic Setting) 618.12(1)  
Gypsum 618.34 Enter 0 if none.
Horizon, Depth to Bottom 618.35  
Horizon, Depth to Top 618.36  
Horizon Designation 618.37 Enter appropriate horizon data in NASIS and then use horizon designation calculation
Horizon Thickness 618.38 Not recommended for Montana minimum dataset
Iron Oxides, Free 618.32  
Landform 618.40  
Linear Extensibility Percent (LEP) 618.41 Montana Guide: LEP (PDF; 17 KB)
Liquid Limit 618.42 Use NASIS Liquid Limit and PI Calculation
Mean Annual Air Temperature (MAAT) (Climatic Setting) 618.12(3)  
Moisture Status, Soil 618.60 Enter if status is "wet"
Organic Matter 618.43 Converting Total Carbon to Organic Carbon
Parent Material--Kind, Modifier, and Origin 618.44  
Particle Density 618.45  
Particle Size 618.46 Use NASIS Particle-Size Calculator to calculate sand and silt fractions
Percent Passing Sieves 618.47 Use NASIS Rock Frags and Percent Passing Sieves Calculator
pH (Soil Reaction) 618.51 Testing Soil pH
Plasticity Index 618.48 Use NASIS Calculation "Liquid Limit and PI"
Ponding Depth, Duration, Frequency Class, and Month 618.49 Flooding and Ponding Frequency Data Population
Precipitation, Mean Annual (Climatic Setting) 618.12(2)  
Relative Effective Annual Precipitation   NASIS: Relative Effective Annual Precipitation (REAP) versus Actual Precipitation
Restriction Kind, Depth, Thickness, and Hardness 618.52 Populating Component Restriction and In-lieu Textures in NASIS
Saturated Hydraulic Conductivity 618.53 Montana Guide: Permeability (PDF; 12 KB)
Sieves, Percent Passing 618.47 Use NASIS Rock Frags and Percent Passing Sieves Calculator
Slope Aspect 618.54 Where applicable on slopes greater than 15%
Slope Gradient 618.55  
Slope Length 618.56 Montana Guide: Estimating Slope Length
Sodium Adsorption Ratio (SAR) 618.57  
Soil Moisture Status 618.60 Enter if status is "wet"
Soil Temperature 618.62 Not required for Montana minimum dataset
Subsidence, Initial and Total 618.63 If applicable
Surface Fragments 618.65 Stoniness Classes
Temperature, Air, Mean Annual (Climatic Setting) 618.12(3)  
Temperature, Soil 618.62 Not required for Montana minimum dataset
Texture Class 618.71(F)  
Texture Modifier 618.71(H)  
Texture, Terms Used in Lieu of Texture 618.71(G)  
Water, One-Tenth Bar 618.72 Use NASIS Water Content Calculator
Water, One-Third Bar 618.73 Use NASIS Water Content Calculator
Water, 15 Bar 618.74 Use NASIS Water Content Calculator
Water, Satiated 618.75 Use NASIS Water Content Calculator