1. Altitude and configuration of the potentiometric surface in the Triassic sandstones and shales, northern Chester County, Pennsylvania, October 1989 through March 1990 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Harrisburg, Pennsylvania : Department of the Interior, U.S. Geological Survey, 1990 Resource Type: Map Access & Availability: Loading
2. Altitude and configuration of the water-level surface in lower Paleozoic and Precambrian crystalline rocks in the Red Clay Creek Basin, Chester County, Pennsylvania, and New Castle County, Delaware, June through October 1989 and March 1990 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Harrisburg, Pennsylvania : United States Department of the Interior, U.S. Geological Survey, 1991 Resource Type: Map Access & Availability: Loading
3. Approximate water-level changes in wells completed in the Chicot and Evangeline aquifers, 1977-91 and 1990-91, and measured compaction, 1973- 90, in the Houston-Galveston region, Texas Author/Creator: Barbie, Dana L. Publication/Creation: [Reston, Va.] : U.S. Geological Survey, 1991 Resource Type: Map Access & Availability: Loading
4. Availability of ground water from unconsolidated deposits in the Mohawk River Basin, New York Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Albany, New York : Department of the Interior, U.S. Geological Survey, 1990 Resource Type: Map Access & Availability: Loading
5. Correlation of regional geohydrologic units to geological formations in southern Missouri Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
6. Depth to water in the western Snake River Plain and surrounding tributary valleys, southwestern Idaho and eastern Oregon, calculated using water levels from 1980 to 1988 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Boise, Idaho : U.S. Department of the Interior, U.S. Geological Survey, 1991 Resource Type: Map Access & Availability: Loading
7. The difference between the potentiometric surfaces of the Aquia aquifer of September 1986 and September 1988 in southern Maryland Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Towson, Maryland : Department of the Interior, U.S. Geological Survey, 1990 Resource Type: Map Access & Availability: Loading
8. Evaluation of ground-water-level changes near Gillette, northeastern Wyoming Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Cheyenne, Wyoming : U.S. Department of the Interior, U.S. Geological Survey, 1991 Resource Type: Map Access & Availability: Loading
9. Generalized potentiometric surfaces of the Red River alluvial aquifer, pool 1, Red River Waterway Area, central Louisiana Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Baton Rouge, Louisiana : U.S. Department of the Interior, U.S. Geological Survey, 1991 Resource Type: Map Access & Availability: Loading
10. Geohydrology of the surficial aquifer in the Hornell area, in Steuben and Allegany counties, New York Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Ithaca, New York : Department of the Interior, U.S. Geological Survey, 1990 Resource Type: Map Access & Availability: Loading
11. Ground-water conditions in and near the Salt River Indian Reservation, south-central Arizona Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Tucson, Arizona : U.S. Department of the Interior, U.S. Geological Survey, 1991 Resource Type: Map Access & Availability: Loading
12. Hydrogeologic unit map of the Piedmont and Blue Ridge Provinces of North Carolina Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Raleigh, North Carolina : Department of the Interior, U.S. Geological Survey, 1990 Resource Type: Map Access & Availability: Loading
13. Hydrogeology of the Ojo Alamo Sandstone in the San Juan structural basin, New Mexico, Colorado, Arizona and Utah Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
14. Hydrogeology of the valley-fill aquifer at Owego, Tioga County, New York Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Albany, New York : U.S. Department of the Interior, U.S. Geological Survey, 1990 Resource Type: Map Access & Availability: Loading
15. Louisiana ground-water map no. 3 : potentiometric surface, 1989, and water-level changes, 1980-89, of the Sparta aquifer in north-central Louisiana Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Baton Rouge, Louisiana : U.S. Department of the Interior, U.S. Geological Survey, 1991 Resource Type: Map Access & Availability: Loading
16. Maps showing hydrostatic levels and general ground-water quality for an area near Conifer, Colorado Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
17. Percentage change in saturated thickness of the High Plains aquifer, west-central Kansas, 1950 to average 1988-90 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Lawrence, Kansas : U.S. Department of the Interior, U.S. Geological Survey, 1991 Resource Type: Map Access & Availability: Loading
18. Potentiometric surface of the alluvial aquifer and hydrologic conditions in the Santa Isabel-Juana Diaz area, Puerto Rico, March to April, 1987 Author/Creator: Geological Survey (U.S.). Water Resources Division. Caribbean District, cartographer Publication/Creation: San Juan, P.R. : Department of the Interior, U.S. Geological Survey, Water Resources Division, Caribbean District, 1990 Resource Type: Map Access & Availability: Loading
19. Potentiometric surface of the alluvial aquifer and hydrologic conditions near Gurabo and Juncos, Puerto Rico, March 1988 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: San Juan, Puerto Rico : U.S. Department of the Interior, U.S. Geological Survey, 1990 Resource Type: Map Access & Availability: Loading
20. Potentiometric surface of the Aquia aquifer in southern Maryland during September 1988 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Towson, Maryland : Department of the Interior, U.S. Geological Survey, 1990 Resource Type: Map Access & Availability: Loading
21. Potentiometric surface of the Aquia aquifer in southern Maryland, September 1989 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Towson, Maryland : Department of the Interior, U.S. Geological Survey, 1991 Resource Type: Map Access & Availability: Loading
22. Potentiometric surface of the Kings Hill aquifer and hydrologic conditions in Saint Croix, U.S. Virgin Islands, July 1987 Author/Creator: Geological Survey (U.S.). Water Resources Division. Caribbean District, cartographer Publication/Creation: San Juan, Puerto Rico : U.S. Geological Survey, Water Resources Division, Caribbean District, 1990 Resource Type: Map Access & Availability: Loading
23. Potentiometric surface of the Magothy aquifer in southern Maryland during September 1988 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Towson, Maryland : Department of the Interior, U.S. Geological Survey, 1990 Resource Type: Map Access & Availability: Loading
24. Potentiometric surface of the Magothy aquifer in southern Maryland, September 1989 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Towson, Maryland : Department of the Interior, U.S. Geological Survey, 1991 Resource Type: Map Access & Availability: Loading
25. Potentiometric surface of the principal aquifer and hydrologic conditions in the Ponce-Juana Diaz area, Puerto Rico, April-May, 1987 Author/Creator: Geological Survey (U.S.). Water Resources Division. Caribbean District, cartographer Publication/Creation: San Juan, Puerto Rico : U.S. Department of the Interior, U.S. Geological Survey, 1990 Resource Type: Map Access & Availability: Loading
26. Potentiometric-surface map of the Coffee Sand aquifer in northeastern Mississippi, August through December 1987 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Jackson, Mississippi : U.S. Department of the Interior, U.S. Geological Survey, 1991 Resource Type: Map Access & Availability: Loading
27. Potentiometric-surface map of the Eutaw-McShan aquifer in northeastern Mississippi, August through December 1987 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Jackson, Mississippi : U.S. Department of the Interior, U.S. Geological Survey, 1991 Resource Type: Map Access & Availability: Loading
28. Potentiometric-surface map of the Gordo aquifer in northeastern Mississippi, August through December 1987 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Jackson, Mississippi : Department of the Interior, United States Geological Survey, 1990 Resource Type: Map Access & Availability: Loading
29. Reconnaissance of ground-water resources of the Fort Peck Indian Reservation, northeastern Montana Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Helena, Montana : U.S. Department of the Interior, U.S. Geological Survey, 1991 Resource Type: Map Access & Availability: Loading
30. Sand and gravel aquifers of Schuyler County, New York Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Ithaca, New York : U.S. Department of the Interior, U.S. Geological Survey, 1990 Resource Type: Map Access & Availability: Loading
31. Water-level maps of the Mississippi River Valley alluvial aquifer in eastern Arkansas, 1987 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Little Rock, Ark.] : U.S. Department of the Interior, U.S. Geological Survey, 1990 Resource Type: Map Access & Availability: Loading