Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Low Gap Creek | Stream | | Josephine | 42 02 56 N | 123 16 14 W |
| Low Gap Trail | Trail | 1431 | Josephine | 42 01 24 N | 123 16 21 W |
| Low Gilchrist Spring | Spring | 1207 | Wheeler | 44 36 50 N | 119 51 54 W |
| Low Line Canal | Canal | 1248 | Klamath | 42 01 22 N | 121 22 51 W |
| Low Line Ditch | Canal | 424 | Hood River | 45 36 38 N | 121 38 15 W |
| Low Line Ditch | Canal | 1267 | Klamath | 42 09 24 N | 121 20 40 W |
| Low Line Ditch | Canal | 827 | Malheur | 44 14 03 N | 117 31 27 W |
| Low Pass | Gap | 327 | Lane | 44 11 21 N | 123 28 54 W |
| Low Pass | Populated Place | 187 | Lane | 44 11 19 N | 123 27 14 W |
| Low Pass Spring | Spring | 1391 | Baker | 44 32 23 N | 118 18 32 W |
| Low Ridge | Ridge | 1198 | Umatilla | 45 49 21 N | 118 03 48 W |
| Low Ridge | Ridge | 1305 | Umatilla | 45 58 43 N | 118 00 23 W |
| Lowami Hart Woods Park | Park | 76 | Washington | 45 28 07 N | 122 49 59 W |
| Lowder Mountain | Summit | 1661 | Lane | 44 04 17 N | 122 07 30 W |
| Lowe Creek | Stream | | Clackamas | 44 56 42 N | 121 53 16 W |
| Lowe Creek | Stream | | Coos | 43 08 08 N | 124 20 00 W |
| Lowe Creek Trail | Trail | 1165 | Clackamas | 44 56 27 N | 121 55 44 W |
| Lowe Mill | Locale | 1749 | Harney | 43 48 12 N | 118 50 43 W |
| Lowe Ranch | Locale | 1454 | Grant | 44 11 58 N | 119 05 51 W |
| Lowe Reservoir | Reservoir | 988 | Malheur | 43 43 14 N | 117 21 15 W |
| Lowe Spring | Spring | 1001 | Malheur | 43 42 51 N | 117 21 06 W |
| Lowell | Populated Place | 224 | Lane | 43 55 06 N | 122 47 01 W |
| Lowell Cemetery | Cemetery | 220 | Lane | 43 55 14 N | 122 47 14 W |
| Lowell Covered Bridge | Bridge | 214 | Lane | 43 54 34 N | 122 46 46 W |
| Lowell Creek | Stream | | Lane | 43 56 01 N | 122 16 50 W |
| Lowell Mountain | Summit | 1441 | Lane | 43 57 37 N | 122 12 35 W |
| Lowell Post Office | Post Office | 224 | Lane | 43 55 06 N | 122 47 01 W |
| Lowell Service Center | Locale | 220 | Lane | 43 55 01 N | 122 46 41 W |
| Lowell Spring | Spring | 1472 | Baker | 44 41 21 N | 118 21 07 W |
| Lowell State Park | Park | 218 | Lane | 43 55 19 N | 122 47 49 W |
| Lowen Spring | Spring | 1156 | Morrow | 45 08 02 N | 119 36 33 W |
| Lower Alder Slope Ditch | Canal | 1197 | Wallowa | 45 24 13 N | 117 18 41 W |
| Lower Alder Springs Forest Camp (historical) | Locale | 1083 | Lane | 44 10 35 N | 121 54 57 W |
| Lower Antelope Reservoir | Reservoir | 1427 | Harney | 42 52 57 N | 118 47 36 W |
| Lower Astoria Post Office (historical) | Post Office | 1 | Clatsop | 46 08 44 N | 123 51 45 W |
| Lower Bacon Camp | Locale | 1367 | Harney | 42 48 27 N | 119 40 16 W |
| Lower Baisley-Elkhorn Mine | Mine | 1612 | Baker | 44 50 51 N | 118 03 26 W |
| Lower Basin Draw Reservoir | Reservoir | 1737 | Lake | 42 33 10 N | 120 07 54 W |
| Lower Batch Lake | Lake | 1318 | Malheur | 43 03 47 N | 117 21 59 W |
| Lower Bedground Waterhole | Reservoir | 1542 | Harney | 42 54 20 N | 119 39 19 W |
| Lower Bell Spring | Spring | 1871 | Malheur | 42 08 38 N | 117 28 38 W |
| Lower Bench | Ridge | 1174 | Umatilla | 45 18 16 N | 118 50 29 W |
| Lower Bennett Dam | Dam | 140 | Marion | 44 47 47 N | 122 46 22 W |
| Lower Bennett Spring | Spring | 880 | Jefferson | 44 33 51 N | 121 02 57 W |
| Lower Berley Lake | Lake | 1623 | Linn | 44 27 27 N | 121 52 48 W |
| Lower Bernard Creek Rapids | Rapids | 410 | Wallowa | 45 24 18 N | 116 36 36 W |
| Lower Betty Lake | Lake | 1668 | Lane | 43 40 09 N | 122 01 19 W |
| Lower Black Bar Falls | Falls | 154 | Josephine | 42 39 21 N | 123 43 52 W |
| Lower Black Canyon Reservoir | Reservoir | 878 | Malheur | 43 50 54 N | 117 41 09 W |
| Lower Bluff Springs | Spring | 1408 | Union | 45 12 20 N | 118 33 12 W |
| Lower Boney Reservoir | Reservoir | 1770 | Malheur | 42 03 36 N | 118 07 41 W |
| Lower Borax Lake Reservoir | Reservoir | 1239 | Harney | 42 19 37 N | 118 36 36 W |
| Lower Bridge (historical) | Populated Place | 772 | Deschutes | 44 21 35 N | 121 17 37 W |
| Lower Bridge Post Office (historical) | Post Office | 774 | Deschutes | 44 21 34 N | 121 17 42 W |
| Lower Bridge Recreation Site | Locale | 827 | Jefferson | 44 33 24 N | 121 37 16 W |
| Lower Bridge School (historical) | School | 836 | Deschutes | 44 22 30 N | 121 20 31 W |
| Lower Buck Creek Recreation Site | Locale | 1550 | Lake | 43 03 07 N | 121 15 54 W |
| Lower Burnt Spring | Spring | 1105 | Malheur | 43 30 24 N | 117 29 33 W |
| Lower Butler Reservoir | Reservoir | 1518 | Harney | 43 00 37 N | 119 06 51 W |
| Lower Buttes Reservoir | Reservoir | 1587 | Harney | 43 51 39 N | 119 18 07 W |
| Lower Cache Creek Rapids | Rapids | 262 | Wallowa | 45 59 27 N | 116 54 42 W |
| Lower Camp Creek Recreation Site | Locale | 1089 | Grant | 44 40 30 N | 118 47 60 W |
| Lower Chapman Dam | Dam | 1168 | Malheur | 43 31 60 N | 118 04 46 W |
| Lower Chapman Reservoir | Reservoir | 1168 | Malheur | 43 31 60 N | 118 04 46 W |
| Lower Chewaucan Marsh | Swamp | 1308 | Lake | 42 34 15 N | 120 23 14 W |
| Lower Chimney Creek Reservoir | Reservoir | 1476 | Malheur | 42 28 30 N | 117 33 44 W |
| Lower Clark Reservoir | Reservoir | 1260 | Malheur | 43 09 09 N | 117 46 54 W |
| Lower Cochran Rapids | Rapids | 264 | Wallowa | 45 57 60 N | 116 53 44 W |
| Lower Cougar Camp | Locale | 1307 | Grant | 44 55 54 N | 118 39 38 W |
| Lower Cow Lake | Reservoir | 1318 | Malheur | 43 04 29 N | 117 21 02 W |
| Lower Cow Reservoir | Reservoir | 895 | Malheur | 43 48 39 N | 117 16 45 W |
| Lower Coyote Reservoir | Reservoir | 1276 | Crook | 44 02 06 N | 119 48 38 W |
| Lower Crossing | Locale | 1785 | Harney | 42 32 28 N | 118 49 02 W |
| Lower Crossing Big Antelope Creek | Crossing | 1236 | Malheur | 42 28 37 N | 117 13 59 W |
| Lower Cyrus Spring | Spring | 953 | Jefferson | 44 27 38 N | 121 06 50 W |
| Lower Davis Flat | Swamp | 1527 | Klamath | 43 10 41 N | 121 33 31 W |
| Lower Deacon Flat Reservoir | Reservoir | 1319 | Malheur | 43 42 16 N | 117 58 41 W |
| Lower Dead Ox Flat | Flat | 641 | Malheur | 44 14 15 N | 117 01 14 W |
| Lower Deary Pasture | Flat | 1196 | Malheur | 42 39 60 N | 117 16 19 W |
| Lower Deer Creek Reservoir | Reservoir | 1679 | Malheur | 42 18 37 N | 117 36 04 W |
| Lower Desdemona Shoal | Channel | -4 | Clatsop | 46 14 44 N | 124 00 15 W |
| Lower Desert | Plain | 883 | Jefferson | 44 28 59 N | 121 24 04 W |
| Lower Ditch | Canal | 667 | Malheur | 44 07 06 N | 116 56 54 W |
| Lower Drummond Waterhole | Spring | 1370 | Malheur | 42 28 01 N | 117 12 19 W |
| Lower Dug Bar Rapids | Rapids | 299 | Wallowa | 45 48 47 N | 116 41 39 W |
| Lower Dugout Creek Reservoir | Reservoir | 1089 | Malheur | 43 44 14 N | 118 02 43 W |
| Lower East Lateral | Canal | 520 | Jackson | 42 14 13 N | 122 44 59 W |
| Lower Eddeeleo Lake | Lake | 1465 | Lane | 43 46 58 N | 122 04 44 W |
| Lower Eightmile Crossing Recreation Site | Locale | 1115 | Wasco | 45 24 49 N | 121 26 33 W |
| Lower Eightmile School | School | 277 | Wasco | 45 31 19 N | 121 07 14 W |
| Lower Elk Meadows | Flat | 1245 | Douglas | 43 31 49 N | 122 54 41 W |
| Lower Empire Lake | Reservoir | 25 | Coos | 43 23 47 N | 124 15 46 W |
| Lower Empire Lake Dam | Dam | 25 | Coos | 43 23 47 N | 124 15 46 W |
| Lower End Camp (historical) | Locale | 1374 | Grant | 44 52 31 N | 118 46 33 W |
| Lower Erma Bell Lake | Lake | 1368 | Lane | 43 50 24 N | 122 02 33 W |
| Lower Falls | Falls | 1185 | Crook | 44 11 37 N | 120 08 51 W |
| Lower Falls Little Minam River | Falls | 1212 | Union | 45 20 40 N | 117 39 04 W |
| Lower First Creek Spring | Spring | 1540 | Baker | 44 36 54 N | 118 11 11 W |
| Lower Fisher Long Ditch | Canal | 1102 | Baker | 44 55 20 N | 118 01 27 W |
| Lower Fishhole | Swamp | 1562 | Klamath | 42 14 52 N | 120 55 24 W |
| Lower Fivemile School | School | 185 | Wasco | 45 33 23 N | 121 06 21 W |
| Lower Fort Creek Reservoir | Reservoir | 1155 | Malheur | 43 10 15 N | 117 38 58 W |
| Lower Galice Riffle | Rapids | 211 | Josephine | 42 33 55 N | 123 35 38 W |
| Lower Gap Creek | Stream | | Grant | 44 13 33 N | 118 51 48 W |
| Lower Gap Creek | Stream | | Grant | 44 13 33 N | 118 51 48 W |
| Lower Goose Egg Lake | Flat | 1389 | Harney | 43 11 50 N | 119 40 14 W |
| Lower Gorge | Valley | | Lincoln | 44 47 09 N | 123 49 20 W |
| Lower Green Point Dam | Dam | 953 | Hood River | 45 38 56 N | 121 40 17 W |
| Lower Herlihy Reservoir | Reservoir | 1524 | Harney | 42 59 40 N | 119 06 45 W |
| Lower Hope Butte Reservoir | Reservoir | 928 | Malheur | 44 04 36 N | 117 26 42 W |