This project was directed toward delineation of reclamation alternatives, based on an understanding of the characteristics of ground water recharge near the Bunker Hill Mine in the Coeur d'Alene Mining District in Idaho. A variety of field techniques were used to identify areas of rapid infiltration and to investigate the ground water flow system associated with the upper portion of the mine in the Milo Creek Drainage. The techniques include installation of piezometer nests, dye tracing, surface resistivity, dye dilution, spring surveys, and hydrochemical analyses. Sites of direct infiltration into the mine were located that include mine workings directly below perennial streams, intersections between streams and faults, and a caved area adjacent to an ephemeral stream. The results indicate that recharge through these sites is not as rapid as suggested by previous studies. Inflow to the underground workings from the ground water flow system around the margin of the mine may account for more mine water than sites of direct infiltration. Recharge control at areas of direct infiltration could result in a net decrease in the quality of acid drainage from the Bunker Hill Mine.