21. Altitude and configuration of the potentiometric surface in the Triassic sandstones and shales, northeastern Chester County, Pennsylvania, September 1987 through January 1988 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Reston, Virginia : Department of the Interior, U.S. Geological Survey, 1989 Resource Type: Map Access & Availability: Loading
22. 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
23. Altitude and configuration of the potentiometric surfaces of the upper and lower aquifer systems in Bridgeton, Nockamixon, and Tinicum townships, Bucks County, Pennsylvania, April 1991 through April 1992 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Lemoyne, Pennsylvania : U.S. Department of the Interior, U.S. Geological Survey, 1993 Resource Type: Map Access & Availability: Loading
24. Altitude and configuration of the water table, and depth to water near Cheyenne, Wyoming, May 1984 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Denver, Colorado : Open-File Services Section, Western Distribution Branch, U.S. Geological Survey Resource Type: Map Access & Availability: Loading
25. 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
26. Altitude and generalized configuration of the top of the Floridan aquifer, St. Johns County, Florida Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Tallahassee, Florida : Department of the Interior, United States Geological Survey, 1984 Resource Type: Map Access & Availability: Loading
27. Altitude, depth, and thickness of the Galena-Platteville bedrock unit in the subcrop area of Illinois and Wisconsin Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2000 Resource Type: Map Access & Availability: Loading
28. Altitude of potentiometric surface, fall 1985, and historic water-level changes in the Fort Pillow aquifer in western Tennessee Author/Creator: Parks, William Scott, author Publication/Creation: Memphis, Tennessee : U.S. Geological Survey, 1990 Resource Type: Book Access & Availability: Loading
29. Altitude of potentiometric surface, fall 1985, and historic water-level changes in the Memphis Aquifer in western Tennessee Author/Creator: Parks, William Scott, author Publication/Creation: Memphis, Tennessee : U.S. Geological Survey, 1990 Resource Type: Book Access & Availability: Loading
30. Altitude of the base of freshwater in Louisiana Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Baton Rouge, Louisiana : Department of the Interior, United States Geological Survey, 1988 Resource Type: Map Access & Availability: Loading
31. Altitude of the freshwater-saltwater interface in a regionally extensive coastal plain aquifer of Mississippi, Alabama, and Georgia Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Jackson, Mississippi : Department of the Interior, U.S. Geological Survey, 1986 Resource Type: Map Access & Availability: Loading
32. Altitude of the potentiometric surface and changes in water levels in the Sparta-Memphis aquifer in eastern and southern Arkansas, spring 1986 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Little Rock, Arkansas : Department of the Interior, U.S. Geological Survey, 1989 Resource Type: Map Access & Availability: Loading
33. Altitude of the potentiometric surface in the Manchester Aquifer at Arnold Air Force Base, May 1991, Coffee and Franklin counties, Tennessee Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Nashville, Tennessee : U.S. Department of the Interior, U.S. Geological Survey, 1993 Resource Type: Map Access & Availability: Loading
34. Altitude of the potentiometric surface, September 1990, and historic water-level changes in the Memphis aquifer in the Memphis area, Tennessee Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Nashville,TN] : U.S. Department of the Interior, U.S. Geological Survey, 1992 Resource Type: Map Access & Availability: Loading
35. Altitude of the potentiometric surfaces, September 1995, and historical water-level changes in the Memphis and Fort Pillow aquifers in the Memphis area, Tennessee Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Memphis, Tennessee : U.S. Department of the Interior, U.S. Geological Survey, 1996 Resource Type: Map Access & Availability: Loading
36. Altitude of the top of the Sparta Sand and Memphis Sand in three areas of Arkansas Author/Creator: Pugh, Aaron L., author Publication/Creation: Little Rock, Arkansas : U.S. Geological Survey, 1998 Resource Type: Book Access & Availability: Loading
37. Altitude of top of bedrock in the vicinity of Wright-Patterson Air Force Base, Ohio Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Columbus, Ohio : U.S. Department of the Interior, U.S. Geological Survey, 1992 Resource Type: Map Access & Availability: Loading
38. Anaerobic degradation of 1,1,2,2-tetrachloroethane and association with microbial communities in a freshwater tidal wetland, Aberdeen Proving Ground, Maryland : laboratory experiments and comparisons to field data Publication/Creation: Baltimore, Md. : U.S. Dept. of the Interior, U.S. Geological Survey, 2003 Resource Type: Book Access & Availability: Loading
39. Analyses of backwater flooding on Long Branch at Whiteman Air Force Base, Knob Noster, Missouri Author/Creator: Southard, Rodney E., author Publication/Creation: Rolla, Missouri : U.S. Geological Survey, 1998 Resource Type: Book Access & Availability: Loading
40. Analyses of flood-flow frequency for selected gaging stations in South Dakota Author/Creator: Benson, Rick D., author Publication/Creation: Huron, South Dakota : U.S. Geological Survey, 1985 Resource Type: Book Access & Availability: Loading