Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Westport Airport | Airport | 7 | Grays Harbor | 46 53 50 N | 124 06 03 W |
| Westwater Inn Heliport | Airport | 49 | Thurston | 47 01 39 N | 122 54 50 W |
| Weyerhaeuser Heliport | Airport | 126 | King | 47 17 53 N | 122 17 52 W |
| Whidbey Air Park Airport | Airport | 79 | Island | 48 01 05 N | 122 26 19 W |
| Whitman Community Hospital Heliport | Airport | 212 | Whitman | 46 40 25 N | 117 26 34 W |
| Whitman County Memorial Airport | Airport | 659 | Whitman | 46 51 31 N | 117 24 50 W |
| Wilbur Airport | Airport | 660 | Lincoln | 47 45 15 N | 118 44 34 W |
| Will Rogers Wiley Post Meml Seaplane Base | Airport | 7 | King | 47 29 59 N | 122 13 09 W |
| Willapa Harbor Airport | Airport | 4 | Pacific | 46 41 54 N | 123 49 20 W |
| Willapa Harbor Heliport | Airport | 24 | Pacific | 46 39 45 N | 123 48 44 W |
| Willard Field | Airport | 768 | Whitman | 47 14 09 N | 117 02 36 W |
| William R Fairchild International Airport | Airport | 79 | Clallam | 48 07 12 N | 123 29 59 W |
| Williams Airpatch | Airport | 38 | Snohomish | 48 16 14 N | 122 01 10 W |
| Williams Grove Landing Strip | Airport | 635 | Lincoln | 47 46 43 N | 118 51 43 W |
| Wilson Creek Airport | Airport | 432 | Grant | 47 25 11 N | 119 06 39 W |
| Wilson Heliport | Airport | 23 | King | 47 45 44 N | 122 09 24 W |
| Windsock Airport | Airport | 54 | San Juan | 48 32 29 N | 122 53 15 W |
| Wirkkala Airport | Airport | 12 | Pacific | 46 21 22 N | 123 48 53 W |
| Wishkah River Ranch Airport | Airport | 14 | Grays Harbor | 47 05 05 N | 123 46 26 W |
| Wissler's Airport | Airport | 80 | Thurston | 46 50 27 N | 122 54 58 W |
| WNP-2 Plant Support Facility Heliport | Airport | 145 | Benton | 46 27 51 N | 119 20 28 W |
| Wood Landing Strip | Airport | 83 | Island | 48 03 32 N | 122 27 43 W |
| Woodland State Airport | Airport | 7 | Cowlitz | 45 53 54 N | 122 44 14 W |
| Yakima Air Terminal Airport | Airport | 325 | Yakima | 46 34 05 N | 120 32 37 W |
| Yakima Valley Memorial Hospital Heliport | Airport | 371 | Yakima | 46 35 37 N | 120 32 48 W |
| Yelm Airpark | Airport | 118 | Thurston | 46 55 30 N | 122 33 14 W |
| Devils Eye | Arch | 439 | Whitman | 46 34 51 N | 117 16 28 W |
| Grenville Arch | Arch | 2 | Grays Harbor | 47 17 44 N | 124 17 04 W |
| Hole-in-the-Wall | Arch | 19 | Clallam | 47 56 30 N | 124 39 05 W |
| Lava Bridge | Arch | 786 | Klickitat | 45 57 44 N | 121 35 49 W |
| Look-Through Rock | Arch | 27 | Clallam | 48 23 01 N | 124 43 33 W |
| Sanctuary Arch | Arch | 1703 | Lewis | 46 28 29 N | 121 36 22 W |
| The Natural Bridge | Arch | 1210 | Stevens | 48 21 42 N | 118 03 57 W |
| Aberdeen Watershed | Area | 353 | Grays Harbor | 47 17 19 N | 123 42 60 W |
| Barnes Forest Corridor | Area | 50 | Cowlitz | 46 19 55 N | 122 54 22 W |
| Boca De Alava | Area | 5 | Clallam | 48 10 55 N | 124 42 30 W |
| Bull Town | Area | 479 | Whitman | 46 57 38 N | 117 56 42 W |
| Butter Creek Research Natural Area | Area | 989 | Lewis | 46 43 47 N | 121 43 41 W |
| Cedar River Watershed | Area | 1036 | King | 47 20 36 N | 121 36 31 W |
| City of Everett Watershed | Area | 549 | Snohomish | 47 59 34 N | 121 41 59 W |
| City of Issaquah Watershed | Area | 141 | King | 47 31 59 N | 122 00 32 W |
| Coleman Weedpatch | Area | 1516 | Lewis | 46 23 41 N | 121 26 48 W |
| Crystal Mountain Area | Area | 1447 | Pierce | 46 55 41 N | 121 28 48 W |
| Cultus Hole | Area | 1695 | Yakima | 46 28 43 N | 121 07 40 W |
| Devils Gardens | Area | 2407 | Yakima | 46 13 34 N | 121 27 52 W |
| Devils Hole | Area | 343 | Klickitat | 45 40 59 N | 121 13 38 W |
| Devils Playground | Area | 2 | Skagit | 48 37 07 N | 122 44 15 W |
| Dorr Fumarole Field | Area | 2359 | Whatcom | 48 47 30 N | 121 48 21 W |
| Dry Island | Area | 306 | Grant | 46 51 18 N | 119 44 16 W |
| Egypt | Area | 781 | Lincoln | 47 51 25 N | 118 15 03 W |
| Elbow Bend | Area | 394 | Ferry | 47 52 22 N | 118 27 43 W |
| Friday Harbor Watershed | Area | 79 | San Juan | 48 32 01 N | 123 07 44 W |
| Goat Marsh Research Natural Area | Area | 894 | Cowlitz | 46 09 57 N | 122 16 54 W |
| Grandview Water Shed | Area | 260 | Yakima | 46 16 33 N | 119 53 29 W |
| Green River Watershed | Area | 692 | King | 47 12 09 N | 121 25 54 W |
| Hartbauer Orchard | Area | 709 | Stevens | 48 55 38 N | 117 34 59 W |
| Hells Kitchen | Area | 253 | Kittitas | 46 57 19 N | 120 00 40 W |
| Horse Heaven | Area | 1387 | Okanogan | 48 38 07 N | 120 43 56 W |
| Huntington Berry Patch | Area | 1235 | Lewis | 46 39 18 N | 121 32 53 W |
| Indian Henrys Hunting Ground | Area | 1678 | Pierce | 46 47 36 N | 121 50 11 W |
| Juniper Forest Survival Training Site (historical) | Area | 275 | Franklin | 46 21 59 N | 118 52 04 W |
| Kent Watershed | Area | 174 | King | 47 21 40 N | 122 00 18 W |
| Lake Herbert G West Reservation Area | Area | 165 | Franklin | 46 35 39 N | 118 13 08 W |
| Lake Twentytwo Research Natural Area | Area | 765 | Snohomish | 48 04 12 N | 121 45 35 W |
| Lake Youngs Watershed | Area | 153 | King | 47 25 20 N | 122 07 08 W |
| Langes Crest | Area | 1090 | Skamania | 46 15 44 N | 122 10 44 W |
| Long Creek Research Natural Area | Area | 619 | Snohomish | 48 05 12 N | 121 41 48 W |
| McGregor Lakes | Area | 378 | Whitman | 46 42 59 N | 118 10 10 W |
| Meeks Table Natural Area | Area | 1325 | Yakima | 46 49 04 N | 121 06 52 W |
| Mill Creek Watershed | Area | 1108 | Walla Walla | 46 01 60 N | 117 56 59 W |
| Monument | Area | 327 | Franklin | 46 36 32 N | 118 33 04 W |
| Morgan Slope | Area | 184 | King | 47 19 08 N | 122 00 42 W |
| No-Outlet Sand Hills | Area | 346 | Grant | 47 02 60 N | 119 16 54 W |
| North Cascades Scenic Highway | Area | 969 | Okanogan | 48 34 60 N | 120 29 59 W |
| North Fork Nooksack Research Natural Area | Area | 803 | Whatcom | 48 54 51 N | 121 45 12 W |
| North Fork Tolt Watershed | Area | 499 | King | 47 44 27 N | 121 39 34 W |
| Olympic Beaches | Area | 5 | Grays Harbor | 47 04 49 N | 124 10 25 W |
| Pole Patch | Area | 1449 | Skamania | 46 21 32 N | 121 53 48 W |
| Pot Holes | Area | 559 | Stevens | 48 43 13 N | 118 00 22 W |
| Pumice Plain | Area | 1132 | Skamania | 46 14 44 N | 122 11 04 W |
| Pyramid Lake Research Natural Area | Area | 756 | Whatcom | 48 41 59 N | 121 07 46 W |
| Queets Corridor | Area | 60 | Jefferson | 47 35 39 N | 124 05 45 W |
| Quinault Research Natural Area | Area | 137 | Grays Harbor | 47 26 09 N | 123 51 55 W |
| Rainbow Creek Research Natural Area | Area | 1194 | Columbia | 46 04 13 N | 117 46 14 W |
| Rattlesnake Hills Research Natural Area | Area | 292 | Benton | 46 26 54 N | 119 36 51 W |
| Renton Watershed | Area | 102 | King | 47 25 33 N | 122 12 30 W |
| Salmo Mountain Research Natural Area | Area | 1620 | Pend Oreille | 48 58 25 N | 117 05 22 W |
| Sasquatch Steps | Area | 1498 | Skamania | 46 13 29 N | 122 11 12 W |
| Scott Prairie | Area | 87 | Mason | 47 09 11 N | 123 27 06 W |
| Skagit Delta | Area | 2 | Skagit | 48 21 14 N | 122 23 15 W |
| South Fork Tolt Watershed | Area | 627 | King | 47 41 58 N | 121 37 09 W |
| Steamboat Mountain Research Natural Area | Area | 1545 | Skamania | 46 08 19 N | 121 44 11 W |
| Suttens Meadow | Area | 1168 | Okanogan | 48 42 18 N | 119 00 19 W |
| Tatugh | Area | 3 | Kitsap | 47 32 41 N | 122 30 07 W |
| The Badlands | Area | 1652 | Chelan | 47 40 41 N | 120 48 01 W |
| The Burn | Area | 344 | Klickitat | 45 43 50 N | 120 23 51 W |
| The Burn | Area | 738 | Lewis | 46 44 44 N | 121 37 50 W |
| The Potholes | Area | 318 | Grant | 46 59 60 N | 119 22 04 W |
| The Spillover | Area | 1319 | Skamania | 46 16 29 N | 122 10 44 W |
| Thunder Field | Area | 6 | Clallam | 47 54 43 N | 124 36 08 W |
| Tomar | Area | 111 | Benton | 45 58 06 N | 119 03 12 W |
| Tumwater Botanical Area | Area | 1168 | Chelan | 47 37 14 N | 120 42 34 W |
| Twin Harbors Beaches | Area | 9 | Grays Harbor | 46 50 19 N | 124 06 25 W |
| Wolf Creek Research Natural Area | Area | 916 | Okanogan | 48 28 55 N | 120 17 24 W |
| Burden Draw | Arroyo | | Okanogan | 48 35 52 N | 119 36 59 W |
| Ackerman Bar | Bar | 238 | Asotin | 46 15 59 N | 116 58 51 W |
| Alden Bank | Bar | 7 | Whatcom | 48 49 43 N | 122 49 51 W |
| Allen Bank | Bar | -17 | Kitsap | 47 31 26 N | 122 28 09 W |
| Allen Bar | Bar | 307 | Douglas | 48 02 60 N | 119 21 59 W |
| Bachelor Island Shoal | Bar | 3 | Clark | 45 49 35 N | 122 47 20 W |