TY - RPRT TI - Estimated hydrologic characteristics of shallow aquifer systems in the Valley and Ridge, the Blue Ridge, and the Piedmont Physiographic Provinces based on analysis of streamflow recession and base flow AU - A. T. Rutledge AU - T. O. Mesko PY - 1996 DO - 10.3133/pp1422b UR - https://pubs.usgs.gov/publication/pp1422B ID - pp1422B ER -