| usda.gov | Usda.gov - United States Department Of Agriculture |
| doc.gov | National Telecommunications and Information Administration |
| nps.gov | The National Park Service |
| loc.gov | The Library Of Congress |
| doi.gov | U.S. Department of the Interior |
| usgs.gov | Usgs (u.S. Geological Survey) |
| nist.gov | National Institute of Standards and Technology (NIST) |
| leeislandcoast.com | Lee Island Coast |
| coconet.com | Cape Coral, Sanibel, Fort Myers, Matlacha Local Tides From Coconet Corporation |
| state.fl.us | Florida Fish and Wildlife Conservation Commission |
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