Field Activity 2001-301-FA

Identifier 2001-301-FA
Purpose High-resolution bathymetric mapping was conducted in 2001 in Lake Okeechobee by the USGS, in cooperation with SFWMD. Of primary interest to the USGS and SFWMD is the quantification of the present day lakebed in Lake Okeechobee. This information can be used by water management decision-makers to better assess the water capacity of the lake at various levels.
Location Lake Okeechobee, FL
Summary Single-beam bathy lines (272); Raw GPS data from base stations (205 files) and boat (119 files); Raw GPS in Rinex format (116 base files, 87 boat files); Processed soundings (519,383) in comma-delimited and Esri point shapefile formats
Info derived Single beam bathymetry (x,y,z) data. Products are ASCII text files of the sounding data and point shapefiles representing seafloor elevations. Differential GPS (DGPS) data files for precise navigation.
Comments Additional Staff: Russel Peterson The survey area covered all of Lake Okeechobee except portions of the eastern section where water depths were insufficient for safe boat operations. All data were processed relative to the WGS84 (G1150) ellipsoid. Operation personnel were used to assist in surveying and staff rotation. Digital FACS logs were generated by N.T. DeWitt in March 2018 using the handwritten logbook to comply with data archiving requests.
22' Whaler
Start Lake Okeechobee FL 2001-09-11
End Clewiston, FL 2001-10-24
Days in the field 30
West -80.76873779
East -80.64373779
North 27.01799598
South 26.89299598
Marine operations Yes


600 Fourth Street South
St. Petersburg, FL33701-4846
(727) 502-8000
Principal investigators Mark Erik Hansen
Crew members
Billy J Reynolds
Scientist, Staff
Keith A Ludwig
Scientist, Staff
Nancy T DeWitt
Scientist, Staff
Noreen A Buster
Scientist, Staff
Mark Erik Hansen
Scientist, Staff
Hill, Gary
Scientist, Staff
Information specialist(s)
Nancy T DeWitt
Specialist, Information

Data types and categories

Data category: Location-Elevation, Sonar
Data type: Navigation, Single Beam

Equipment used

Equipment Usage description Data types Datasets
Marimatech Echosounder Single Beam 3
Ashtech Z-Xtreme DGPS Benchmarks, Navigation (no data reported)
TSS DMS-05 Motion Sensor Interferometric, Single Beam (no data reported)
Choke Ring Antenna Benchmarks, Navigation (no data expected)


Datasets produced in this activity

Dataset name Equipment Description Dataset contact Marimatech Echosounder Bathymetric contours in Esri polyline shapefile format. Nancy T DeWitt Marimatech Echosounder Singlebeam soundings in Esri point shapefile format. Nancy T DeWitt Marimatech Echosounder Singlebeam soundings in comma-delimited text format. Nancy T DeWitt


Samples collected during this field activity