Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Clatonia Creek Dam 7-A | Dam | 427 | Gage | 40 29 42 N | 096 48 37 W |
| Clatonia Creek Dam 8-D | Dam | 427 | Gage | 40 29 30 N | 096 47 37 W |
| Clatonia Creek Reservoir 10-A | Reservoir | 433 | Gage | 40 31 06 N | 096 47 25 W |
| Clatonia Creek Reservoir 2-A | Reservoir | 411 | Gage | 40 27 12 N | 096 52 13 W |
| Clatonia Creek Reservoir 2-B | Reservoir | 415 | Gage | 40 27 36 N | 096 51 55 W |
| Clatonia Creek Reservoir 3-A | Reservoir | 424 | Gage | 40 28 54 N | 096 51 31 W |
| Clatonia Creek Reservoir 4-A | Reservoir | 413 | Gage | 40 28 12 N | 096 50 13 W |
| Clatonia Creek Reservoir 6-A | Reservoir | 430 | Gage | 40 28 42 N | 096 48 19 W |
| Clatonia Creek Reservoir 7-A | Reservoir | 427 | Gage | 40 29 42 N | 096 48 37 W |
| Clatonia Creek Reservoir 8-D | Reservoir | 427 | Gage | 40 29 30 N | 096 47 37 W |
| Clatonia Fire Department | Building | 419 | Gage | 40 27 55 N | 096 50 59 W |
| Clatonia Post Office | Post Office | 419 | Gage | 40 27 55 N | 096 50 59 W |
| Clatonia School (historical) | School | 433 | Gage | 40 27 59 N | 096 51 22 W |
| Claw Hammer Lake | Lake | 1090 | Grant | 41 45 14 N | 101 31 56 W |
| Clay Center | Populated Place | 545 | Clay | 40 31 18 N | 098 03 19 W |
| Clay Center (historical) | Locale | 544 | Clay | 40 31 18 N | 098 03 33 W |
| Clay Center Cemetery | Cemetery | 541 | Clay | 40 31 57 N | 098 03 01 W |
| Clay Center Community Medical Clinic | Hospital | 545 | Clay | 40 31 18 N | 098 03 19 W |
| Clay Center Dental Clinic | Hospital | 545 | Clay | 40 31 18 N | 098 03 19 W |
| Clay Center Historical Marker | Park | 543 | Clay | 40 31 29 N | 098 03 21 W |
| Clay Center Police Department | Building | 544 | Clay | 40 31 18 N | 098 03 20 W |
| Clay Center Post Office | Post Office | 544 | Clay | 40 31 16 N | 098 03 21 W |
| Clay Center Public Library | Building | 544 | Clay | 40 31 18 N | 098 03 20 W |
| Clay Center Public Schools | School | 545 | Clay | 40 31 25 N | 098 03 03 W |
| Clay County | Civil | 541 | Clay | 40 32 00 N | 098 03 01 W |
| Clay County Courthouse | Building | 546 | Clay | 40 31 17 N | 098 03 18 W |
| Clay County Fairground | Locale | 544 | Clay | 40 31 45 N | 098 03 31 W |
| Clay County Sheriffs Office | Building | 546 | Clay | 40 31 17 N | 098 03 18 W |
| Clay Creek | Stream | | Holt | 42 49 43 N | 099 10 32 W |
| Clay Creek School | School | 586 | Holt | 42 48 43 N | 099 10 04 W |