These data have been downloaded from the Everglades Depth Estimation Network (EDEN) database through the Explore and View EDEN (EVE) web application. For additional info about EDEN: http://sofia.usgs.gov/eden
See the EDEN Gage Data Readme for metadata.
The only provision for use of these datasets is that the creators request acknowledgement of the EDEN website and the USGS in all instances of publication or reference. They suggest using the following text:
The authors acknowledge the Everglades Depth Estimation Network (EDEN) project and the US Geological Survey for providing the [insert data type here] for the purpose of this research/report.