| distance | reference number | name | latitude | longitude |
| 249.2 | 1328 | Houston Ship Channel, Galveston Bay, Manchester, Te | 29.7183 | -95.2517 |
| 249.2 | 1329 | Houston Ship Channel, Manchester, Texas | 29.7183 | -95.2517 |
| 250.3 | 1718 | Lynchburg Landing, San Jacinto River, Texas | 29.765 | -95.0783 |
| 250.5 | 2648 | San Jacinto Battleground State Historic Site, Texas | 29.7567 | -95.09 |
| 257.1 | 153 | Barbours Cut, Morgans Point, Galveston Bay, Texas | 29.6817 | -94.985 |
| 257.1 | 154 | Barbours Cut, Morgans Point, Texas | 29.6817 | -94.985 |
| 258.0 | 2297 | Point Barrow, Trinity Bay, Galveston Bay, Texas | 29.7333 | -94.8333 |
| 261.4 | 2595 | Round Point, Trinity Bay, Texas | 29.7333 | -94.7 |
| 261.8 | 583 | Clear Lake, Galveston Bay, Texas | 29.5633 | -95.0667 |
| 261.8 | 584 | Clear Lake, Texas | 29.5633 | -95.0667 |
| 262.8 | 2594 | Round Point, Trinity Bay, Galveston Bay, Texas | 29.7133 | -94.69 |
| 269.8 | 847 | Eagle Point, Galveston Bay, Texas | 29.48 | -94.9183 |
| 269.8 | 849 | Eagle Point, Texas | 29.48 | -94.9183 |
| 274.9 | 2500 | Rainbow Bridge, Neches River, Texas | 29.98 | -93.8817 |
| 275.3 | 2129 | Orange (Old Navy Base), Texas | 30.0983 | -93.7217 |
| 276.0 | 3065 | Texas City, Turning Basin, Texas | 29.3833 | -94.8833 |
| 278.2 | 2579 | Rollover Pass, Texas | 29.515 | -94.5133 |
| 278.6 | 2609 | Sabine Naches Canal, Port Arthur, Texas | 29.8667 | -93.93 |
| 278.9 | 1103 | Gilchrist, East Bay, Texas | 29.5167 | -94.4833 |
| 279.4 | 2361 | Port Bolivar, Galveston Bay, Texas | 29.365 | -94.78 |
| 279.4 | 2362 | Port Bolivar, Texas | 29.365 | -94.78 |
| 281.1 | 1069 | Galveston Bay Entrance, North Jetty, Texas | 29.3583 | -94.725 |
| 282.1 | 1071 | Galveston Pier 21, Galveston Channel, Texas | 29.31 | -94.7933 |
| 282.8 | 40 | Alligator Point, West Bay, Texas | 29.1667 | -95.1333 |
| 283.1 | 1070 | Galveston Bay entrance, south jetty, Texas | 29.3333 | -94.7 |