Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| O L Fisher Pond | Reservoir | 217 | Rogers | 36 21 48 N | 095 37 25 W |
| O'Connell Pond | Reservoir | 384 | Comanche | 34 45 37 N | 098 18 33 W |
| Oak Creek Site 1 Reservoir | Reservoir | 410 | Washita | 35 07 24 N | 098 46 25 W |
| Oak Creek Site 10 Reservoir | Reservoir | 432 | Washita | 35 15 06 N | 098 49 07 W |
| Oak Creek Site 2 Reservoir | Reservoir | 452 | Washita | 35 09 24 N | 098 53 25 W |
| Oak Creek Site 2a Reservoir | Reservoir | 467 | Washita | 35 09 48 N | 098 55 07 W |
| Oak Creek Site 2b Reservoir | Reservoir | 463 | Washita | 35 09 48 N | 098 54 31 W |
| Oak Creek Site 3 Reservoir | Reservoir | 454 | Washita | 35 09 42 N | 098 52 55 W |
| Oak Creek Site 4 Reservoir | Reservoir | 438 | Washita | 35 09 18 N | 098 52 19 W |
| Oak Creek Site 5 Reservoir | Reservoir | 436 | Washita | 35 09 42 N | 098 49 25 W |
| Oak Creek Site 7 Reservoir | Reservoir | 427 | Washita | 35 08 24 N | 098 48 31 W |
| Oak Creek Site 8 Reservoir | Reservoir | 414 | Washita | 35 08 12 N | 098 47 01 W |
| Oak Creek Site 9 Reservoir | Reservoir | 431 | Washita | 35 12 12 N | 098 48 31 W |
| Oakes Number 1 Reservoir | Reservoir | 478 | Dewey | 36 57 00 N | 098 52 07 W |
| Ochelata Lake | Reservoir | 212 | Washington | 36 37 06 N | 095 58 01 W |
| Ochelata Lake | Reservoir | 294 | Washington | 36 36 54 N | 096 57 01 W |
| Okeene Sewage Disposal Pond North | Reservoir | 360 | Blaine | 36 06 24 N | 098 18 43 W |
| Okeene Sewage Disposal Pond South | Reservoir | 360 | Blaine | 36 06 18 N | 098 18 37 W |
| Okemah Lake | Reservoir | 237 | Okfuskee | 35 32 04 N | 096 18 58 W |
| Okfuskee Tributaries Site B-4 Reservoir | Reservoir | 221 | Okfuskee | 35 36 06 N | 096 18 55 W |
| Okfuskee Tributaries Site B1 Reservoir | Reservoir | 218 | Okfuskee | 35 35 00 N | 096 16 43 W |
| Okfuskee Tributaries Site B3 Reservoir | Reservoir | 226 | Okfuskee | 35 34 18 N | 096 18 31 W |
| Okfuskee Tributaries Site H-1 Reservoir | Reservoir | 242 | Okfuskee | 35 34 12 N | 096 30 25 W |
| Okfuskee Tributaries Site H-10 Reservoir | Reservoir | 233 | Okfuskee | 35 36 18 N | 096 32 07 W |
| Okfuskee Tributaries Site H-3 Reservoir | Reservoir | 253 | Okfuskee | 35 32 06 N | 096 31 13 W |
| Okfuskee Tributaries Site H-4 Reservoir | Reservoir | 253 | Okfuskee | 35 31 48 N | 096 31 55 W |
| Okfuskee Tributaries Site H-5 Reservoir | Reservoir | 252 | Okfuskee | 35 32 00 N | 096 32 37 W |
| Okfuskee Tributaries Site H-6 Reservoir | Reservoir | 257 | Okfuskee | 35 32 12 N | 096 34 31 W |
| Okfuskee Tributaries Site H-7 Reservoir | Reservoir | 255 | Okfuskee | 35 33 48 N | 096 34 07 W |
| Okfuskee Tributaries Site H-8 Reservoir | Reservoir | 280 | Okfuskee | 35 34 42 N | 096 34 25 W |