| distance | reference number | name | latitude | longitude |
| 473.1 | 1702 | Lower Bryant Landing, Tensay River, Alabama | 30.9783 | -87.8733 |
| 481.5 | 1705 | Lower Hall Landing, Tensaw River, Alabama | 30.8167 | -87.9167 |
| 485.5 | 1859 | Mobile (Mobile State Docks), Alabama | 30.7083 | -88.0433 |
| 485.7 | 3048 | Tchefuncta River, Lake Pontchartrain, Louisiana | 30.3783 | -90.16 |
| 491.1 | 258 | Biloxi, Biloxi Bay, Mississippi | 30.4117 | -88.9033 |
| 492.4 | 1182 | Gulfport, Gulfport Harbor, Mississippi | 30.36 | -89.0817 |
| 492.5 | 184 | Bay Waveland Yacht Club, Bay St. Louis, Mississippi | 30.325 | -89.325 |
| 492.5 | 2922 | St. Louis Bay entrance, Mississippi | 30.325 | -89.325 |
| 492.9 | 257 | Biloxi (Cadet Point), Biloxi Bay, Mississippi | 30.39 | -88.8567 |
| 493.0 | 2597 | Route 433, Bayou BonFouca, Louisiana | 30.2717 | -89.7933 |
| 493.4 | 2096 | Ocean Springs, Mississippi | 30.3917 | -88.7983 |
| 494.8 | 3279 | Waveland, Mississipi Sound, Mississippi | 30.2817 | -89.3667 |
| 494.8 | 3280 | Waveland, Mississippi | 30.2817 | -89.3667 |
| 495.7 | 2209 | Pearlington, Pearl River, Louisiana | 30.24 | -89.615 |
| 498.1 | 2193 | Pascagoula NOAA Lab, Pascagoula River, Mississippi | 30.3583 | -88.5667 |
| 498.1 | 2321 | Point of Pines, Bayou Cumbest, Mississippi | 30.3867 | -88.44 |
| 499.6 | 2194 | Pascagoula Point, Mississippi Sound, Mississippi | 30.34 | -88.5333 |
| 499.6 | 2195 | Pascagoula, Mississippi Sound, Mississippi | 30.34 | -88.5333 |
| 499.7 | 481 | Cat Island, Mississippi | 30.2317 | -89.1167 |
| 500.2 | 1044 | Fowl River, Mobile Bay Entrance, Alabama | 30.4333 | -88.1167 |
| 500.3 | 1154 | Great Point Clear, Mobile Bay, Alabama | 30.4833 | -87.9333 |
| 501.8 | 185 | Bayou La Batre, Mississippi Sound, Alabama | 30.3667 | -88.2667 |
| 503.9 | 1320 | Horn Island, Mississippi | 30.2383 | -88.6667 |
| 503.9 | 1321 | Horn Island, Mississippi Sound, Mississippi | 30.2383 | -88.6667 |
| 505.1 | 1136 | Grand Pass, Mississippi | 30.1267 | -89.2217 |