1. Potentiometric surfaces, altitudes of the tops, and hydrogeology of the Minnelusa and Madison Aquifers, Black Hills area, Wyoming Author/Creator: Geological Survey (U.S.) Publication/Creation: [Reston, Va.?] : U.S. Geological Survey, 2002 Resource Type: Map Access & Availability: Loading
2. Hydrogeology and hydrogeologic terranes of the Blue Ridge and Piedmont physiographic provinces in the eastern United States Author/Creator: Geological Survey (U.S.) Publication/Creation: [Denver, CO] : [For sale by Information Services]. Resource Type: Map Access & Availability: Loading
3. Geohydrology of the shallow aquifers in the Fort Lupton-Gilcrest area, Colorado Author/Creator: Geological Survey (U.S.) Publication/Creation: [Denver, Colo.] : [For sale by Information Services]. Resource Type: Map Access & Availability: Loading
4. Potentiometric surface of the Minnekahta Aquifer in the Black Hills area, South Dakota Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : Information Services [distributor] Resource Type: Map Access & Availability: Loading
5. Geohydrology of the shallow aquifers in the Boulder-Longmont area, Colorado Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, Va. : The Survey, 2000 Resource Type: Map Access & Availability: Loading
6. Altitude of the top of the Deadwood Formation in the Black Hills area, South Dakota Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, Colo. : For sale by USGS Branch of Information Services Resource Type: Map Access & Availability: Loading
7. Altitude of the top of the Inyan Kara Group in the Black Hills area, South Dakota Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, Colo. : For sale by USGS Branch of Information Services Resource Type: Map Access & Availability: Loading
8. Potentiometric surface of the Madison Aquifer in the Black Hills area, South Dakota Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : Information Services [distributor] Resource Type: Map Access & Availability: Loading
9. Potentiometric surface of the Inyan Kara Aquifer in the Black Hills area, South Dakota Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : Information Services [distributor] Resource Type: Map Access & Availability: Loading
10. Water levels and ground-water discharge, regional aquifer system of the midwestern Basins and Arches Region, in parts of Indiana, Ohio, Illinois, and Michigan Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, Va. : The Survey, [1999, i.e. 2000] Resource Type: Map Access & Availability: Loading