Soil loss tolerance for a specific soil, also known as the T value, is the maximum average annual soil loss expressed as tons per acre per year that will permit current production levels to be maintained economically and indefinitely. T values range from 1 to 5 tons per acre per year.
View in Map RoomThe National Commodity Crop Productivity Index 3.0 replaces version 2.0 as the National Crop Index. The NCCPI is a method of arraying the soils of the U.S. for non-irrigated commodity crop production based on their inherent soil properties. The interpretation is applicable to both heavily populated and sparsely populated areas. Ratings are for soils in their present condition. The present land use is not considered in the ratings. Most of the NCCPI criteria relate directly to the ability of soils, landscapes, and climates to foster crop productivity. The NCCPI is based on productivity for four crops: Corn, Soybeans, Small Grains, or Cotton. The maximum productivity rating, based on the highest value for these crops, is shown on the map.
View in Map RoomDrainage Class, which classifies how quickly water is removed from the soil, has been updated to the October 2019 NRCS SSURGO data release.
View in Map RoomSoil Loss Tolerance, a measure of how much soil can be lost per year without impacting production, has been updated to the October 2019 NRCS SSURGO data release. Note there is a change to the legend used to depict the data in this update.
View in Map RoomSoil Taxonomy Order, which is the broadest classification of soil types, has been updated to the October 2019 NRCS SSURGO data release.
View in Map RoomLand Capability Class, which shows the general suitability of soils for agricultural purposes, has been updated to the October 2019 NRCS SSURGO data release. Note there is a change to the legend used to depict the data in this update.
View in Map RoomThe Soil Boundaries have been updated to the October 2019 NRCS SSURGO data release.
View in Map RoomHydrologic Soil Group, which estimates potential runoff from precipitation based on soils characteristics, has been updated to the October 2019 NRCS SSURGO data release.
View in Map RoomFarmland Class, which shows prime and important farmland, has been updated to the October 2019 NRCS SSURGO data release.
View in Map RoomSlope Gradient, depicting the steepness of the landscape by soil type, has been updated to the October 2019 NRCS SSURGO data release.
View in Map Room