Delineation Tools

Note that these public domain models may not be acceptable for delineations in some States. Consult your Source Water Protection primacy agency. Also, some of these models require extensive data and/or expertise.

EPA Technical Assistance Documents

WhAEM - The Wellhead Analytic Element Model can be used to estimate and display a time-of travel capture zone. This model is especially useful for testing the sensitivity of input parameters on the end result. The model can be downloaded free of charge.

Ground Water Modeling System (U.S. Army Corps of Engineers, DoD). - Includes links to several ground water models in the public domain, including MODFLOW, MODPATH, MT3D, RT3D, SEEP2D, and FEMWATER/LEWASTE.

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