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171. Massachusetts (Groundwater Discharge Permits, 2003)
MassGIS (Office : Mass.). The Department of Environmental Protection (DEP) Division of Watershed Management (DWM) Water Permitting Program (WPP) is responsible for regulatin... MassGIS (Office : Mass.).
172. Mississippian aquifer of Iowa
Horick, Paul J. Iowa Geological Survey,.
173. Modified geologic map of Nevada : map 5-1, water for Nevada--mineral projections /
Archbold, N. L. (Norbert L.), 1930- compiler, cartographer. Nevada Bureau of Mines and Geology, University of Nevada,.
174. Nihon suiri chishitsu zu Hydrogeological map of Japan /
Murashita, Toshio. Chishitsu Chōsajo].
175. Nitrate in ground water using a model to simulate the probability of nitrate contamination of shallow ground water in the conterminous United States /
Hitt, Kerie J. U.S. Dept. of the Interior, U.S. Geological Survey,.
176. Potential risk to ground water
Louisiana Geological Survey. Louisiana Geological Survey,.
177. Potentiometric surface of the upper Floridan Aquifer in Florida, May 2000
Marella, Richard L. Florida Geological Survey,.
178. Principal Aquifers, New York State, 1998
1998. James A. Miller (comp.). This data set contains the shallowest principal aquifers of New York State, portrayed as lines. The data set was developed as part of the effort to...
179. Principal Aquifers of the 48 Conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands
2003. Geological Survey (U.S.). Water Resources Division. Wisconsin District. This polygon shapefile contains the shallowest principal aquifers of the conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islan... Geological Survey (U.S.).
180. Reconnaissance of ground-water resources of northeastern Valley County, Montana
Geological Survey (U.S.). U.S. Geological Survey :.