| distance | reference number | name | latitude | longitude |
| 45.7 | 3377 | Withlacoochee River entrance, Florida | 29 | -82.7667 |
| 46.0 | 371 | Buffalo Bluff, Florida | 29.595 | -81.6817 |
| 46.0 | 372 | Buffalo Bluff, St. Johns River, Florida | 29.595 | -81.6817 |
| 46.9 | 699 | Crystal River, Florida Power, Florida | 28.96 | -82.725 |
| 47.1 | 266 | Black Creek, S.C.L. RR. bridge, Florida | 30.08 | -81.7617 |
| 47.8 | 3289 | Welaka, Florida | 29.4767 | -81.675 |
| 47.8 | 3290 | Welaka, St. Johns River, Florida | 29.4767 | -81.675 |
| 48.3 | 2768 | Shell Island, Florida | 28.9233 | -82.6917 |
| 48.3 | 2769 | Shell Island, north end, Crystal River, Florida | 28.9233 | -82.6917 |
| 48.3 | 700 | Crystal River, Kings Bay, Florida | 28.8983 | -82.5983 |
| 48.3 | 701 | Crystal River, Kings Bay, Florida (sub) | 28.8983 | -82.5983 |
| 48.5 | 3160 | Twin Rivers Marina, Crystal River, Florida | 28.905 | -82.6383 |
| 48.5 | 3161 | Twin Rivers Marina, Florida | 28.905 | -82.6383 |
| 48.5 | 792 | Doctors Lake, Peoria Point, Florida | 30.12 | -81.7583 |
| 48.5 | 492 | Cedar Key, Gulf Of Mexico, Florida | 29.135 | -83.0317 |
| 48.7 | 2170 | Palatka, Florida | 29.6433 | -81.6317 |
| 48.7 | 2171 | Palatka, St. Johns River, Florida | 29.6433 | -81.6317 |
| 48.9 | 3007 | Suwannee River entrance, Florida | 29.2833 | -83.15 |
| 49.8 | 786 | Dixie Bay, Florida | 28.8817 | -82.635 |
| 49.8 | 787 | Dixie Bay, Salt River, Crystal Bay, Florida | 28.8817 | -82.635 |
| 50.1 | 1163 | Green Cove Springs, St. Johns River, Florida | 29.99 | -81.6633 |
| 50.6 | 3005 | Sutherlands Still, Dunns Creek, Florida | 29.5717 | -81.6067 |
| 51.3 | 2158 | Ozello North, Crystal Bay, Florida | 28.8633 | -82.6667 |
| 51.3 | 2159 | Ozello North, Florida | 28.8633 | -82.6667 |
| 51.8 | 2512 | Red Bay Point, St. Johns River, Florida | 29.9783 | -81.6283 |