| distance | reference number | name | latitude | longitude |
| 9.6 | 1656 | Little St. Marys River, Florida | 30.7317 | -81.7267 |
| 10.0 | 295 | Boggy Creek, 2 mi. above entrance, St. Marys River, | 30.5883 | -81.6633 |
| 10.7 | 1517 | Kings Ferry, St. Marys River, Florida | 30.7867 | -81.84 |
| 12.8 | 3136 | Trout River, Sherwood Forest, Florida | 30.42 | -81.7283 |
| 13.4 | 1198 | Halfmoon Island, highway bridge, St. Marys River, F | 30.575 | -81.6083 |
| 14.2 | 677 | Crandall, St. Marys River, Florida | 30.7217 | -81.6217 |
| 14.8 | 2534 | Ribault River, Trout River, Lake Forest, Florida | 30.3983 | -81.6983 |
| 15.2 | 489 | Cedar Heights, Broward River, St. Johns River, Flor | 30.4367 | -81.6417 |
| 15.4 | 1848 | Mink Creek entrance, St. Marys River, Florida | 30.5367 | -81.5817 |
| 15.6 | 713 | Cuno, Lofton Creek, St. Marys River, Florida | 30.5767 | -81.5717 |
| 16.2 | 2590 | Roses Bluff, Bells River, St. Marys River, Florida | 30.7033 | -81.5767 |
| 16.4 | 1866 | Moncrief Creek entrance, Trout River, Florida | 30.3917 | -81.6617 |
| 17.4 | 1406 | Jacksonville, Navy Fuel Depot, St. Johns River, Flo | 30.4 | -81.6267 |
| 17.8 | 2243 | Phoenix Park, Florida | 30.3833 | -81.6367 |
| 18.1 | 2930 | St. Marys, St. Marys River, Florida | 30.72 | -81.5483 |
| 18.3 | 545 | Chester, Bells River, St. Marys River, Florida | 30.6833 | -81.5333 |
| 18.4 | 886 | Edwards Creek, 1 mi. above entrance, Florida | 30.5017 | -81.5417 |
| 18.5 | 1667 | Lofton, Lanceford Creek, St. Marys River, Florida | 30.6433 | -81.5233 |
| 19.0 | 1948 | Nassauville, St. Marys River, Florida | 30.5683 | -81.515 |
| 19.5 | 1686 | Longbranch (USCOE dredge depot), St Johns River, Fl | 30.36 | -81.62 |
| 19.6 | 1675 | Long Branch, Jacksonville, Florida | 30.3583 | -81.62 |
| 20.1 | 1736 | Main Street Bridge, Jacksonville, Florida | 30.32 | -81.6583 |
| 20.1 | 1737 | Main Street Bridge, St. Johns River, Florida | 30.32 | -81.6583 |
| 20.7 | 283 | Blount Island Bridge, St. Johns River, Florida | 30.4133 | -81.545 |
| 20.9 | 383 | Burnt Fort, Satilla River, Georgia | 30.95 | -81.9 |