Surface Water Modeling and Assessments

Effective water planning and management requires an accurate assessment of the location and quantity of the water resources of the State, and one of the most useful tools for evaluating management strategies is a computer model that simulates the surface water system throughout an entire watershed. To that end, SCDNR and SCDHEC have begun the process of developing surface-water quantity models for each of the eight major watersheds, or basins, in South Carolina.

A more detailed discussion of the proposed surface water modeling can be found in the document Basinwide Surface Water Modeling in South Carolina PDF, and an overview of each of the eight basins for which the models will be developed can be found in the document Major Basins of South Carolina PDF.

In July 2014, CDM Smith, Inc. was awarded a contract to develop the models for the state.

The South Carolina Department of Natural Resources (SCDNR) is pleased to announce the public release of the Simplified Water Allocation Models (SWAM) for the Edisto, Saluda and Salkehatchie river basins. Find out more and download the SWAM models here.

Project Documents

For any questions regarding these reports and presentations, please contact Joe Gellici by phone (803-734-6428) or email.

For information about stakeholder meetings, please visit

(Documents below are in PDF format.)

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River Basins