ABSTRACT
The relationship between free surface and seepage face under steady state conditions of flow has been analyzed for flow in unconfined aquifers. The groundwater seepage model MOD-FLOW-SURF, which contains the functionality to model seepage surfaces, was used to determine the seepage surface for a single well and arrays of wells. The results were compared with available analytical and published seepage surface solutions and the reliability of the MODFLOW-SURF package has been assessed. Suggestions are also made for modifying conventional analytical solutions in order to account for the seepage face. The relevance of the work to the design of pump and treat remediation systems is noted.
