TY - RPRT TI - Potentiometric surface of the Madison Aquifer in the Black Hills area, South Dakota AU - Michael L. Strobel AU - Joel M. Galloway AU - Ghaith R. Hamade AU - Gregory L. Jarrell PY - 2000 DO - 10.3133/ha745d UR - https://pubs.usgs.gov/publication/ha745D ID - ha745D ER -