Trackline map of all boomer seismic reflection data collected during USGS Cruises 01SCC01 and 01SCC02. These data were collected in Timbalier Bay and in the Gulf of Mexico offshore of East Timbalier Island, Louisiana, in June, July, and August of 2001. This map is set in geographic coordinates, NAD83 (unprojected) and was created at a scale of 1:200,000. It was created using ESRI GIS software ArcView 3.2 and 8.1, exported to Adobe Illustrator for further editing, and saved for the web in JPEG format. The USGS is not the originator of all layers used in creating the maps presented in this archive. The roads layer is a Louisiana Oil Spill Coordinator's Office (LOSCO) Environmental Baseline Inventory Dataset 'Louisiana Highway System from LDOTD (Louisiana Department of Transportation) source data, Geographic NAD83, LOSCO (1999) [primary roads].' The rivers layer is a LOSCO data set derived from ESRI/Geographic Data Technology, Inc. (GDT) data that were in turn derived from Bureau of the Census TIGER/Line files. The waterbodies layer is also a LOSCO data set derived from ESRI/GDT data.