Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Saint Marys Boys Home | Building | 59 | Washington | 45 29 33 N | 122 50 46 W |
| Santiam Valley Grange | Building | 197 | Marion | 44 47 05 N | 122 36 59 W |
| Scholls Grange Hall | Building | 57 | Washington | 45 23 49 N | 122 55 59 W |
| Schoolie Pasture Ranger Station | Building | 832 | Wasco | 44 58 04 N | 121 35 19 W |
| Sellwood Community Center | Building | 34 | Multnomah | 45 27 49 N | 122 39 02 W |
| Senior Recreation | Building | 39 | Multnomah | 45 31 34 N | 122 39 10 W |
| Silver Lake Ranger Station | Building | 1337 | Lake | 43 07 24 N | 121 03 44 W |
| Silverton Hills Grange | Building | 428 | Marion | 44 56 43 N | 122 41 30 W |
| Siskiyou National Forest Headquarters | Building | 364 | Josephine | 42 27 53 N | 123 19 13 W |
| Sisters Ranger Station | Building | 974 | Deschutes | 44 17 30 N | 121 33 16 W |
| Siuslaw National Forest Headquarters | Building | 79 | Benton | 44 33 01 N | 123 18 02 W |
| Slide Creek Powerplant | Building | 561 | Douglas | 43 17 39 N | 122 28 23 W |
| Smith River Grange | Building | 44 | Douglas | 43 47 17 N | 123 59 15 W |
| Smith River Ranger Station (historical) | Building | 13 | Douglas | 43 48 00 N | 124 08 49 W |
| Smith River Ranger Station (historical) | Building | 9 | Douglas | 43 44 19 N | 124 06 39 W |
| Snow Bunny Lodge | Building | 1163 | Clackamas | 45 17 10 N | 121 43 39 W |
| Snow Mountain Ranger Station | Building | 1268 | Harney | 43 33 28 N | 119 05 03 W |
| Soda Springs Power Plant | Building | 549 | Douglas | 43 18 23 N | 122 30 06 W |
| South Deer Creek Grange | Building | 221 | Douglas | 43 10 14 N | 123 14 49 W |
| Southwest Community Center | Building | 107 | Multnomah | 45 28 32 N | 122 43 20 W |
| Springfield City Hall | Building | 140 | Lane | 44 02 50 N | 123 01 18 W |
| St Johns Community Center | Building | 41 | Multnomah | 45 35 32 N | 122 45 11 W |
| St Johns Racquet Center | Building | 44 | Multnomah | 45 35 27 N | 122 45 21 W |
| Summit Ranger Station | Building | 1213 | Clackamas | 45 18 03 N | 121 44 31 W |
| Sumner Grange | Building | 15 | Coos | 43 17 14 N | 124 09 04 W |
| Sunnyridge Grange | Building | 76 | Lincoln | 44 35 35 N | 123 55 21 W |
| Sunrise Ranger Station | Building | 338 | Lane | 43 56 46 N | 123 54 39 W |
| Sunset Fire Hall (historical) | Building | 154 | Clackamas | 45 21 32 N | 122 37 33 W |
| Sweet Home Ranger Station | Building | 190 | Linn | 44 24 02 N | 122 41 22 W |
| The High Desert Museum | Building | 1210 | Deschutes | 43 58 09 N | 121 20 44 W |
| Tiller Ranger Station | Building | 318 | Douglas | 42 55 37 N | 122 56 59 W |
| Toketee Powerplant | Building | 619 | Douglas | 43 16 23 N | 122 26 51 W |
| Tualatin Grange Hall | Building | 75 | Clackamas | 45 19 24 N | 122 44 39 W |
| Umatilla National Forest Headquarters | Building | 336 | Umatilla | 45 39 44 N | 118 48 33 W |
| Umatilla Toll Bridge Toll Plaza (historical) | Building | 97 | Umatilla | 45 55 29 N | 119 19 31 W |
| Umpqua National Forest Headquarters | Building | 146 | Douglas | 43 14 26 N | 123 21 44 W |
| Union Hill Grange | Building | 279 | Marion | 44 52 36 N | 122 44 05 W |
| Unity Ranger Station | Building | 1231 | Baker | 44 26 08 N | 118 11 15 W |
| University Community Center | Building | 29 | Multnomah | 45 35 13 N | 122 42 37 W |
| Valley River Center | Building | 125 | Lane | 44 04 05 N | 123 06 19 W |
| Vernonia Grange | Building | 211 | Columbia | 45 50 45 N | 123 14 35 W |
| Waldo Hills Grange Hall | Building | 181 | Marion | 44 56 39 N | 122 48 09 W |
| Waldport Ranger Station | Building | 29 | Lincoln | 44 25 09 N | 124 04 35 W |
| Wallowa Fire Station | Building | | Wallowa | 45 34 18 N | 117 31 40 W |
| Wallowa Valley Ranger Station | Building | 1139 | Wallowa | 45 25 42 N | 117 17 10 W |
| Wallowa-Whitman National Forest Headquarters | Building | 1053 | Baker | 44 46 17 N | 117 49 47 W |
| Washington County Home | Building | 56 | Washington | 45 30 16 N | 122 57 34 W |
| Washington Grange Hall | Building | 185 | Washington | 45 38 24 N | 123 00 19 W |
| Waverly Baby Home | Building | 50 | Multnomah | 45 30 05 N | 122 37 37 W |
| Webfoot Grange Hall | Building | 47 | Yamhill | 45 10 48 N | 123 05 15 W |
| White Eagle Grange Hall | Building | 444 | Umatilla | 45 31 45 N | 118 47 32 W |
| White Shield Home | Building | 60 | Multnomah | 45 32 31 N | 122 43 21 W |
| Willamette National Forest Headquarters | Building | 130 | Lane | 44 03 09 N | 123 05 19 W |
| Winema National Forest Headquarters | Building | 1301 | Klamath | 42 14 57 N | 121 47 27 W |
| Wolf Run Community Hall | Building | 681 | Wasco | 45 26 00 N | 121 17 12 W |
| Woodstock Community Center | Building | 77 | Multnomah | 45 28 46 N | 122 37 03 W |
| Yachats Grange | Building | 25 | Lincoln | 44 17 43 N | 123 59 44 W |
| Zigzag Ranger Station | Building | 445 | Clackamas | 45 20 31 N | 121 56 31 W |
| A Canal | Canal | 1258 | Klamath | 42 10 31 N | 121 42 01 W |
| A Canal | Canal | 1265 | Klamath | 42 38 49 N | 122 00 34 W |
| A Drain | Canal | 657 | Malheur | 44 02 05 N | 117 00 39 W |
| A Line Canal | Canal | 171 | Umatilla | 45 49 34 N | 119 16 43 W |
| Ady Canal | Canal | 1249 | Klamath | 42 01 59 N | 121 50 37 W |
| Albany Santiam Canal | Canal | 79 | Linn | 44 36 04 N | 123 01 34 W |
| Alder Slope Ditch | Canal | 1327 | Wallowa | 45 23 29 N | 117 19 22 W |
| Allen Canyon Ditch | Canal | 1708 | Wallowa | 45 26 35 N | 117 28 08 W |
| Allen Ditch | Canal | 1609 | Lake | 42 25 40 N | 120 05 49 W |
| Allen Ditch | Canal | 902 | Malheur | 43 43 58 N | 118 04 37 W |
| Allen Drain | Canal | 674 | Malheur | 43 41 30 N | 117 01 51 W |
| Altnow Ditch | Canal | 1115 | Harney | 43 52 55 N | 118 18 04 W |
| Amazon Creek Diversion Channel | Canal | 116 | Lane | 44 04 32 N | 123 13 45 W |
| Anawalt Drain | Canal | 1309 | Malheur | 43 01 58 N | 117 19 36 W |
| Anderson Ditch | Canal | 1158 | Malheur | 42 42 45 N | 117 48 49 W |
| Annex Canal | Canal | 642 | Malheur | 44 13 46 N | 116 58 44 W |
| Antelope Feeder Canal | Canal | 1332 | Malheur | 42 58 26 N | 117 09 30 W |
| Arnold Canal | Canal | 1194 | Deschutes | 43 59 29 N | 121 21 24 W |
| Arritola Ditch | Canal | 1447 | Malheur | 42 43 14 N | 117 05 54 W |
| Ashcraft Flume | Canal | 1491 | Lake | 42 05 56 N | 120 33 10 W |
| Ashland Lateral | Canal | 1163 | Jackson | 42 09 43 N | 122 30 40 W |
| Ausmus Canal | Canal | 1251 | Harney | 43 24 25 N | 118 51 06 W |
| B Canal | Canal | 1258 | Klamath | 42 10 35 N | 121 39 45 W |
| B Canal | Canal | 1263 | Klamath | 42 37 14 N | 121 59 59 W |
| Bagley Ditch | Canal | 1324 | Lake | 42 38 25 N | 120 30 59 W |
| Baker Municipal Aqueduct | Canal | 1367 | Baker | 44 46 03 N | 117 53 43 W |
| Baldock Ditch | Canal | 1043 | Baker | 44 47 16 N | 117 48 43 W |
| Baldwin Ditch | Canal | 899 | Crook | 44 14 46 N | 120 52 24 W |
| Baldwin Ditch | Canal | 1481 | Lake | 42 11 35 N | 120 28 29 W |
| Baltimore Ditch | Canal | 456 | Josephine | 42 13 29 N | 123 15 33 W |
| Banks Ditch | Canal | 804 | Baker | 44 34 18 N | 117 27 43 W |
| Basche Ditch | Canal | 842 | Baker | 44 52 52 N | 117 38 32 W |
| Beers Ditch | Canal | 1000 | Malheur | 44 21 05 N | 117 38 49 W |
| Bend Feed Canal | Canal | 1064 | Deschutes | 44 05 31 N | 121 19 39 W |
| Big Bend Ditch | Canal | 1265 | Wallowa | 45 21 57 N | 117 11 43 W |
| Big Creek Ditch | Canal | 1108 | Union | 44 57 46 N | 117 36 44 W |
| Big Flat Ditch | Canal | 1202 | Baker | 44 32 18 N | 118 10 30 W |
| Big Red S Canal | Canal | 1255 | Harney | 43 26 50 N | 118 58 14 W |
| Biggs Ditch | Canal | 713 | Malheur | 43 56 25 N | 117 24 59 W |
| Birch Creek Ditch | Canal | 1149 | Malheur | 44 23 45 N | 117 41 49 W |
| Bishop Ditch | Canal | 764 | Malheur | 43 32 60 N | 117 05 49 W |
| Black Willow Siphon | Canal | 768 | Malheur | 43 41 45 N | 117 10 49 W |
| Blanton Drain | Canal | 665 | Malheur | 44 00 30 N | 117 02 44 W |
| Blodgett Ditch | Canal | 512 | Josephine | 42 15 24 N | 123 17 04 W |
| Blue Mountain Ditch | Canal | 854 | Grant | 44 24 23 N | 119 12 10 W |
| Blue Springs Ditch | Canal | 1273 | Klamath | 42 41 24 N | 122 02 52 W |
| Blume Zilkey Ditch | Canal | 1092 | Baker | 44 57 49 N | 118 02 03 W |
| Boston Drain | Canal | 702 | Malheur | 43 55 55 N | 117 19 14 W |
| Bowlus Ditch | Canal | 448 | Umatilla | 45 53 49 N | 118 17 54 W |
| Bridge Creek Canal | Canal | 1272 | Harney | 42 51 50 N | 118 52 19 W |
| Bridgepoint Ditch | Canal | 366 | Jackson | 42 16 39 N | 123 13 18 W |
| Brogan Ditch | Canal | 781 | Malheur | 44 13 03 N | 117 28 06 W |