| distance | reference number | name | latitude | longitude |
| 20.4 | 2952 | Steamboat Slough, Skamokawa, Washington | 46.2667 | -123.45 |
| 20.5 | 2810 | Skamonkawa, Washington | 46.2667 | -123.452 |
| 22.8 | 484 | Cathlamet, Washington | 46.2 | -123.383 |
| 24.3 | 842 | Eagle Cliff, Washington | 46.1667 | -123.233 |
| 24.9 | 3278 | Wauna, Oregon | 46.1667 | -123.4 |
| 25.3 | 2960 | Stella, Washington | 46.1833 | -123.117 |
| 25.4 | 3277 | Wauna, Columbia River, Oregon | 46.16 | -123.405 |
| 28.1 | 1232 | Harrington Point, Columbia River, Washington | 46.2667 | -123.65 |
| 28.7 | 2508 | Raymond, Willapa River, Washington | 46.6833 | -123.755 |
| 29.0 | 1541 | Knappa, Knappa Slough, Columbia River, Oregon | 46.1833 | -123.583 |
| 30.4 | 1880 | Montesano, Chehalis River, Grays Harbor, Washington | 46.9683 | -123.6 |
| 31.0 | 2858 | South Bend, Washington | 46.6633 | -123.798 |
| 31.0 | 2859 | South Bend, Willapa River, Washington | 46.6633 | -123.798 |
| 32.4 | 1734 | Mailboat Slough, Willapa River, Washington | 46.6883 | -123.817 |
| 33.7 | 2741 | Settler's Point, Columbia River, Oregon | 46.1667 | -123.683 |
| 34.0 | 1689 | Longview, Columbia River, Washington | 46.1083 | -122.957 |
| 34.7 | 1690 | Longview, Washington | 46.1 | -122.95 |
| 34.7 | 1946 | Naselle River, 4 miles above swing bridge, Willapa | 46.3883 | -123.84 |
| 35.3 | 2575 | Rocky Point, Eld Inlet, Washington | 47.0817 | -123.005 |
| 35.8 | 3115 | Tongue Point, Astoria, Columbia River, Oregon | 46.2083 | -123.767 |
| 36.1 | 381 | Burnes Point, Totten Inlet, Washington | 47.1217 | -123.057 |
| 37.2 | 2125 | Olympia, Budd Inlet, Washington | 47.0517 | -122.903 |
| 37.2 | 2172 | Palix River, south fork, Willapa Bay, Washington | 46.5867 | -123.91 |
| 37.7 | 1947 | Naselle River, swing bridge, Willapa Bay, Washingto | 46.43 | -123.903 |
| 37.8 | 656 | Cosmopolis, Chehalis River, Grays Harbor, Washingto | 46.9667 | -123.778 |