From February through July of 1997, the U.S. Geological Survey (USGS) conducted geophysical surveys of several Florida water bodies as part of the USGS Lakes and Coastal Aquifers (LCA) study. These areas include Lakes Dosson, Halfmoon and Round in west-central Florida and Sebastian Inlet and Indian River Lagoon on the east coast of the State. Field activity 97LCA01 was conducted in cooperation with the Southwest Florida Water Management District (SWFWMD), and field activities 97LCA02 and 97LCA03 were conducted in cooperation with the St. Johns River Water Management District (SJRWMD). This report serves as an archive of unprocessed digital boomer sub-bottom data, trackline maps, navigation files, Geographic Information System (GIS) files, observer's logbook, and formal Federal Geographic Data Committee (FGDC) metadata. Filtered and gained (showing a relative increase in signal amplitude) digital images of the seismic profiles are also provided. Refer to the Acronyms page for expansions of acronyms and abbreviations used in this report.