Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Drainage Ditch 73 | Canal | 367 | Sac | 42 22 09 N | 094 58 18 W |
| Drainage Ditch 79 | Canal | 369 | Calhoun | 42 30 36 N | 094 43 49 W |
| Drainage Ditch Number 1 | Canal | 384 | Buena Vista | 42 37 24 N | 094 59 51 W |
| Drainage Ditch Number 1 | Canal | 370 | Calhoun | 42 29 06 N | 094 46 50 W |
| Drainage Ditch Number 1 | Canal | 366 | Hancock | 43 07 51 N | 093 48 52 W |
| Drainage Ditch Number 1 | Canal | 340 | Humboldt | 42 54 04 N | 094 09 22 W |
| Drainage Ditch Number 10 | Canal | 360 | Hancock | 43 03 42 N | 093 55 50 W |
| Drainage Ditch Number 101 | Canal | 384 | Buena Vista | 42 39 17 N | 095 01 25 W |
| Drainage Ditch Number 102 | Canal | 343 | Webster | 42 37 46 N | 094 00 06 W |
| Drainage Ditch Number 103 | Canal | 349 | Kossuth | 42 57 41 N | 094 02 44 W |
| Drainage Ditch Number 107 | Canal | 340 | Boone | 42 11 00 N | 094 04 23 W |
| Drainage Ditch Number 107 | Canal | 348 | Wright | 42 52 41 N | 093 50 32 W |
| Drainage Ditch Number 108 | Canal | 376 | Winnebago | 43 29 05 N | 093 35 09 W |
| Drainage Ditch Number 11 | Canal | 377 | Winnebago | 43 21 12 N | 093 39 53 W |
| Drainage Ditch Number 110 | Canal | 318 | Hardin | 42 16 23 N | 093 17 19 W |
| Drainage Ditch Number 114 | Canal | 368 | Hancock | 43 11 46 N | 093 45 10 W |
| Drainage Ditch Number 116 | Canal | 352 | Kossuth | 42 59 19 N | 094 07 43 W |
| Drainage Ditch Number 116 | Canal | 363 | Pocahontas | 42 42 39 N | 094 33 25 W |
| Drainage Ditch Number 117 | Canal | 338 | Greene | 41 55 18 N | 094 33 42 W |
| Drainage Ditch Number 117 | Canal | 349 | Kossuth | 42 59 28 N | 094 03 54 W |
| Drainage Ditch Number 121 | Canal | 335 | Greene | 42 07 52 N | 094 32 23 W |
| Drainage Ditch Number 129 | Canal | 369 | Hancock | 43 08 30 N | 093 44 24 W |
| Drainage Ditch Number 13 | Canal | 369 | Hancock | 43 09 32 N | 093 34 14 W |
| Drainage Ditch Number 164 | Canal | 369 | Pocahontas | 42 40 13 N | 094 35 50 W |
| Drainage Ditch Number 168 | Canal | 363 | Pocahontas | 42 42 55 N | 094 28 16 W |
| Drainage Ditch Number 169 | Canal | 363 | Pocahontas | 42 44 39 N | 094 36 05 W |
| Drainage Ditch Number 175 | Canal | 351 | Kossuth | 43 12 22 N | 094 07 49 W |
| Drainage Ditch Number 177 | Canal | 354 | Kossuth | 43 00 59 N | 094 04 41 W |
| Drainage Ditch Number 18 | Canal | 343 | Humboldt | 42 52 21 N | 094 02 50 W |
| Drainage Ditch Number 18 | Canal | 378 | Winnebago | 43 28 05 N | 093 36 59 W |