Thomas E. Reilly Charles A. Appel 1994 A summary list of reports that document numerical methods that simulate ground-water flow and quality is presented. The list documents the reference by giving a description of each model program, its numerical features, an expression of the number of past applications and where to obtain a copy. All reports included in the list have been published or developed by the U.S. Geological Survey and most contain listings of the computer programs. application/pdf 10.3133/cir1104 en U.S. G.P.O. ; USGS Map Distribution [distributor], Summary of selected computer programs produced by the U.S. Geological Survey for simulation of ground-water flow and quality, 1994 reports