All Deepest underwater caves in USA
Ranked by reported survey data.
| # | Cave | Location | Max depth | Source |
|---|---|---|---|---|
| 1 | Cathedral-Falmouth System | Suwannee, Florida, USA | 130.8 m | Cave-Exploring World Long Caves Secondary source Provided by: Andrew Pitkin e-mail |
| 2 | Weeki Wachee Spring | Hernando, Florida, USA | 124.1 m | Cave-Exploring World Long Caves Secondary source Provided by: Andrew Pitkin e-mail |
| 3 | Wakulla Cave System | Leon/Wakulla, Florida, USA | 106.7 m | Cave-Exploring World Long Caves Secondary source Provided by: Casey McKinlay e-mail |
| 4 | Peacock Cave I-II System | Suwanee, Florida, USA | 64 m | Cave-Exploring World Long Caves Secondary source Provided by: Richard Blackburn e-mail |
| 5 | Lineater Also: Stevenson Spring | Hamilton, Florida, USA | 53.3 m | Cave-Exploring World Long Caves Secondary source Provided by: Andy Pitkin FB |
| 6 | M2 Blue | Florida, USA | 50 m | Cave-Exploring World Long Caves Secondary source Provided by: Andy Pitkin FB |
| 7 | Falmouth-Cathedral Cave System Also: Cathedral-Falmouth system | Suwannee County, Florida, USA | 48.8 m | KUR: Falmouth Cave System Secondary source Provided by: Karst Underwater Research |
| 8 | Beacon Woods - Waynes World System Also: Beacon Woods - Stratamax, Beacon Woods - Wayne's World, Beacon Woods Cave System, School Sink | Pasco, Florida, USA | 48.8 m | Cave-Exploring World Long Caves Tertiary / aggregate source Provided by: Die langsten Unterwasserhohlensysteme der welt, Oliver Knab |
| 9 | Old Bellamy Also: Derekson, Santa Fe River Rise | Alachua, Florida, USA | 48.8 m | Cave-Exploring World Long Caves Tertiary / aggregate source Provided by: Die langsten Unterwasserhohlensysteme der welt, Oliver Knab |
| 10 | Madison Blue Spring | Lee, Florida, USA | 43.9 m | KUR: Madison Secondary source Provided by: Karst Underwater Research |
| 11 | Jackson Blue Also: Jackson Blue Spring Cave System, Jackson Blue Springs | Jackson, Florida, USA | 30.5 m | Cave-Exploring World Long Caves Secondary source Provided by: Ben Martinez e-mail |
| 12 | Manatee Spring Cave System Also: Manatee Spring | Chiefland, Florida, USA | 27.4 m | KUR: Manatee Spring Secondary source Provided by: Karst Underwater Research |
| 13 | Luraville / Telford System | Suwanee, Florida, USA | 22 m | Cave-Exploring World Long Caves Secondary source Provided by: Andy Higgie e-mail |