Sediment Delivered to River and Streams from Sheet & Rill Erosion
Source: Natural Resources Conservation Service - National Resources Inventory
Map Description:
This map shows estimates of sediment delivered to rivers and streams for the approximately 2,150 watersheds comprising the contiguous United States. The Universal Soil Loss Equation was used to estimate sheet and rill erosion rates for the agricultural land in each watershed (other erosion processes are not included). Erosion rates were converted to tons of sediment delivered to streams from agricultural land using a delivery ratio formula based on an empirical relationship between soil erosion rates and sediment loads in several U.S. river basins.

Cautions for this Product:
The maps shows estimates of erosion, NOT actual erosion. The map does not include gully erosion.

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