Scale 1:500,000. Size of original printed map height 22 inches, width 35 inches.

This map is Plate 1-5 from Bachman, L.J., and Wilson, J.M., “The Columbia Aquifer of the Eastern Shore of Maryland”. Baltimore: Maryland Geological Survey, 1984 (Report of Investigations No. 40).

This map is Plate 6 from Kerhin, R.T. , “The Surficial Sediments of Chesapeake Bay, Maryland: Physical Characteristics and Sediment Budget”. Baltimore: Maryland Geological Survey, 1988 (Report of Investigations No. 48).

This map is Plate 2 from Andreasen, D.C., “The Geohydrology and Water—Supply Potential of the Lower Patapsco Aquifer and Patuxent Aquifers in the Indian Head-Bryans Road Area, Charles, County, Maryland.” Baltimore: Maryland ...

This map is Figure 1 from Otton, E.G., “Geologic and Hydrologic Factors Bearing on Subsurface Storage of Liquid Wastes in Maryland”. Baltimore: Maryland Geological Survey, 1970 (Report of Investigations No. 14).

Scale 1:380,160. Map is from Maryland Geological Survey, 1904; Volume 5, Plate 34. Size of original printed map height 6.75 inches, width 4 inches.

This map is Plate 7 from Kerhin, R.T. , “The Surficial Sediments of Chesapeake Bay, Maryland: Physical Characteristics and Sediment Budget”. Baltimore: Maryland Geological Survey, 1988 (Report of Investigations No. 48).

This map is Plate 1 from Andreasen, D.C., and Smith, B.S., “Hydrogeology and Simulation of Ground-water Flow in the Upper Wicomico River and Estimation of Contributing Areas of the Salisbury Well Fields, Wicomico County, ...

Scale 1:62,500. Map is from U.S. Geological Survey, 1938; Bulletin 906, Plate 6. Size of original printed map height 29.75 inches, width 30.5 inches.

Scale 1:760,320. Size of original printed map height 11.75 inches, width 9 inches.