Beaulieu, E., Poppe, L.J., Paskevich, V.F., Doran, E.F., Chauveau, B.E., Crocker, J.M., Beaver, A.L., and Schattgen, P.T., 2005, Sidescan sonar imagery and surficial geologic interpretation of the sea floor off Bridgeport, Connecticut: U.S. Geological Survey Open-File Report 2005–1162, DVD-ROM. (Also available at https://pubs.usgs.gov/of/2005/1162/.)

Goldsmith, R., 1962, Surficial geology of the New London quadrangle, Connecticut–New York: U.S. Geological Survey Map GQ–176, 1 sheet, scale 1:24,000.

Koppelman, L.E., Weyl, P.K., Gross, M.G., and Davies, D.S., 1976, The urban sea: Long Island Sound: New York, Praeger Publishers, 223 p.

Knebel, H.J., and Poppe, L.J., 2000, Sea-floor environments within Long Island Sound: A regional overview: Journal of Coastal Research, v. 16, no. 3, p. 533–550.

Lewis, R.S., and Needell, S.W., 1987, Maps showing stratigraphic framework and Quaternary geologic history of eastern Long Island Sound: U.S. Geological Survey Miscellaneous Field Studies Map MF–1939–A, 3 sheets, scale 1:125,000.

Lewis, R.S., DiGiacomo-Cohen, M.L., and Twichell, D.C., 1998, Sidescan sonar image of the seafloor off New London, Connecticut, in Poppe, L.J., and Polloni, C. (eds.), Long Island Sound Environmental Studies: U.S. Geological Survey Open-File Report 98–502, chap. 2, survey 9, CD-ROM. (Also available at https://pubs.usgs.gov/of/1998/of98-502/chapt2/9newlond/frontp9.htm.)

Long Island Sound study—Comprehensive conservation and management plan, 1994: U.S. Environmental Protection Agency Report, 168 p.

McMullen, K.Y., Poppe, L.J., DiGiacomo-Cohen, M.L., Moser, M.S., and Christman, E.B., 2005, Surficial geology of the sea floor in west-central Long Island Sound as shown by sidescan sonar imagery: Northeastern Geology and Environmental Sciences, v. 27, no. 1, p. 60–70.

National Oceanic and Atmospheric Administration, 2004a, Descriptive report for survey H11224, Project No. OPR–B370–KRL–04: National Ocean Service, National Oceanic and Atmospheric Administration. (Also available at https://pubs.usgs.gov/of/2009/1231/pdf_files/h11224_dr.pdf.)

National Oceanic and Atmospheric Administration, 2004b, Descriptive report for survey H11225, Project No. OPR–B370–KRL–04: National Ocean Service, National Oceanic and Atmospheric Administration. (Also available at https://pubs.usgs.gov/of/2009/1231/pdf_files/h11225_dr.pdf.)

National Oceanic and Atmospheric Administration, 2005a, Descriptive report for survey H11441, Project No. OPR–B370–TJ–05: National Ocean Service, National Oceanic and Atmospheric Administration. (Also available at https://pubs.usgs.gov/of/2009/1231/pdf_files/h11441_dr.pdf.)

National Oceanic and Atmospheric Administration, 2005b, Descriptive report for survey H11442, Project No. OPR–B370–TJ–05: National Ocean Service, National Oceanic and Atmospheric Administration. (Also available at https://pubs.usgs.gov/of/2009/1231/pdf_files/h11442_dr.pdf.)

Poppe, L.J., Ackerman, S.D., Doran, E.F., Beaver, A.J., Crocker, J.M., and Schattgen, P.T., 2006a, Interpolation of reconnaissance multibeam bathymetry from north-central Long Island Sound: U.S. Geological Survey Open-File Report 2005–1145, DVD. (Also available at https://pubs.usgs.gov/of/2005/1145/.)

Poppe, L.J., Ackerman, S.D., Doran, E.F., Moser, M.S., Stewart, H.F., Forfinski, N.A., Gardner, U.L., and Keene, J.A., 2006c, Geologic interpretation and multibeam bathymetry of the sea floor in southeastern Long Island Sound: U.S. Geological Survey Open-File Report 2006–1059, DVD. (Also available at https://pubs.usgs.gov/of/2006/1059/.)

Poppe, L.J., Denny, J.F., Williams, S.J., Moser, M.S., Stewart, H.F., Forfinski, N.A., and Doran, E.F., 2007b, The geology of Six Mile Reef, eastern Long Island Sound: U.S. Geological Survey Open-File Report 2007–1191, DVD. (Also available at https://pubs.usgs.gov/of/2007/1191/.)

Poppe, L.J., DiGiacomo-Cohen, M.L., Smith, S.M., Stewart, H.F., and Forfinski, N.A., 2006b, Seafloor character and sedimentary processes in eastern Long Island Sound and western Block Island Sound: Geo-Marine Letters, v. 26, p. 59–68.

Poppe, L.J., DiGiacomo-Cohen, M.L., Smith, S.M., Stewart, H.F., and Forfinski, N.A., 2007a, Geological interpretation and multibeam bathymetry of the sea floor in the vicinity of the Race, eastern Long Island Sound: U.S. Geological Survey Open-File Report 2007–1012, DVD. (Also available at https://pubs.usgs.gov/of/2007/1012/.)

Poppe, L.J., Lewis, R.S., Denny, J.F., DiGiacomo-Cohen, M.L., and Parolski, K.F., 1999b, Sidescan sonar image, surficial geologic interpretation, and bathymetry of the Long Island Sound sea floor around Falkner Island, Connecticut: U.S. Geological Survey Geologic Investigations Map I–2671, 2 sheets, scale 1:10,000.

Poppe, L.J., Lewis, R.S., Denny, J.F., Parolski, K.F., and DiGiacomo-Cohen, M.L., 1998b, Sidescan sonar image, surficial geologic interpretation and bathymetry of Fishers Island Sound, Connecticut, New York, and Rhode Island: U.S. Geological Survey Geologic Investigations Map I–2640, 2 sheets, scale 1:12,500.

Poppe, L.J., Lewis, R.S., Denny, J.F., Parolski, K.F., DiGiacomo-Cohen, M.L., and Tolderlund, D.S., 1998a, Sidescan sonar image, surficial geologic interpretation, and bathymetry of the Long Island Sound sea floor in Niantic Bay, Connecticut: U.S. Geological Survey Geologic Investigations Map I–2625, 2 sheets, scale 1:11,750.

Poppe, L.J., Lewis, R.S., Knebel, H.J., Haase, E.A., Parolski, K.F., and DiGiacomo-Cohen, M.L., 2001, Sidescan sonar images, surficial geologic interpretations, and bathymetry of New Haven harbor, Connecticut, and the New Haven dumping ground, north-central Long Island Sound: U.S. Geological Survey Geologic Investigations Series Map I–2736, 8 p., 2 sheets, scales 1:15,000 and 1:20,000.

Poppe, L.J. Lewis, R.S., Signell, R.P., Knebel, H.J., Persaud, M., Denny, J.F., Parolski, K.F., and, DiGiacomo-Cohen, M.L., 1999a, Sidescan sonar image, surficial geologic interpretation, and bathymetry of the Long Island Sound sea floor off Roanoke Point, New York: U.S. Geological Survey Geologic Investigations Series Map I–2692, 2 sheets, scales 1:15,000 and 1:20,000.

Poppe, L.J., Lewis, R.S., Zajac, R.N., Twichell, D.C., Schmuck, E.A., Parolski, K.F., and DiGiacomo-Cohen, M.L., 1997, Acoustic interpretation and sidescan sonar image of the Long Island Sound sea floor off Hammonasset Beach State Park, Connecticut: U.S. Geological Survey Geologic Investigations Map I–2588, 2 sheets, scales 1:7,500 and 1:15,000.

Poppe, L.J., Paskevich, V.F., Moser, M.S., DiGiacomo-Cohen, M.L., and Christman, E.B., 2004, Sidescan sonar imagery and surficial geologic interpretation of the sea floor off Branford, Connecticut, U.S. Geological Survey Open-File Report 2004–1003, CD-ROM. (Also available at https://pubs.usgs.gov/of/2004/1003/.)

Poppe, L.J., Williams, S.J., Moser, M.S., Stewart, H.F., Forfinski, N.A., and Doran, E.F., 2008, Quaternary geology and sedimentary processes in the vicinity of Six Mile Reef, eastern Long Island Sound: Journal of Coastal Research, v. 24, no. 1, p. 255–266.

Twichell, D.C., Zajac, R.N., Poppe, L.J., Lewis, R.S., Cross, V.A., Nichols, D., DiGiacomo-Cohen, M.L., 1997, Bathymetry, sidescan sonar image, and surficial geological interpretation of Long Island Sound off Norwalk, Connecticut: U.S. Geological Survey Geologic Investigations Map I–2589, 2 sheets, scale 1:10,000.

Twichell, D.C., Zajac, R.N., Poppe, L.J., Lewis, R.S., Cross, V.A., Nichols, D., DiGiacomo-Cohen, M.L., 1998, Bathymetry, sidescan sonar image, and surficial geological interpretation of Long Island Sound off Milford, Connecticut: U.S. Geological Survey Geologic Investigations Map I–2632, 2 sheets, scale 1:15,000.

White, R.E., Jr., and White, L.F., publishers, 2009, Eldridge tide and pilot book:Medfield, MA, Robert E. White Instruments, Inc., 272 p.

Zajac, R.N., Lewis, R.S., Poppe, L.J., Twichell, D.C., Vozarik, J., and DiGiacomo-Cohen, M.L., 2000, Relationships between sea floor structure and benthic communities in Long Island Sound at regional and benthoscape scales: Journal of Coastal Research, v. 16, no. 3, p. 627–640.

Zajac, R.N., Lewis, R.S., Poppe, L.J, Twichell, D.C., Vozarik, J., and DiGiacomo-Cohen, M.L., 2003, Responses of infaunal populations to benthoscape structure in eastern Long Island Sound, and the potential importance of transition zones: Limnology and Oceanography, v. 48, no. 2, p. 829–842.