| Nodaway River At Clarinda, IA |
| North Fork Maquoketa River Below Bear Creek At Dyersville, IA |
| North Fork Maquoketa River Near Fulton, IA |
| North Raccoon River Near Jefferson, IA |
| North Raccoon River Near Lanesboro, IA |
| North Raccoon River Near Sac City, IA |
| North River Near Norwalk, IA |
| North Skunk River Near Sigourney, IA |
| Ocheyedan River Near Spencer, IA |
| Old Mans Creek Near Iowa City, IA |
| Perry Creek At 38Th Street At Sioux City, IA |
| Perry Creek Near Hinton, IA |
| Perry Creek Near Millnerville, IA |
| Pilot Creek At County Hwy P15 Near Rolfe, IA |
| Prairie Creek At Otho, IA |
| Price Creek At Amana, IA |
| Raccoon River At 63Rd Street At Des Moines, IA |
| Raccoon River At Fleur Drive At Des Moines, IA |
| Raccoon River At Van Meter, IA |
| Raccoon River Near West Des Moines, IA |
| Rapid Creek Near Iowa City, IA |
| Richland Creek Near Haven, IA |
| Rock River Below Tom Creek At Rock Rapids, IA |
| Rock River Near Rock Valley, IA |
| Salt Creek Near Elberon, IA |
| Shell Rock River At Shell Rock, IA |
| Shell Rock River Near Rockford, IA |
| Silver Creek At Welton, IA |
| Skunk River At Augusta, IA |
| Skunk River At Merrimac, IA |
| Snake Creek Near Yorktown, IA |
| Soldier River At Pisgah, IA |
| South Branch Ralston Creek At Iowa City, IA |
| South Fork Chariton River Near Promise City, IA |
| South Fork Iowa River Ne Of New Providence, IA |
| South Raccoon River At Redfield, IA |
| South River Near Ackworth, IA |
| South Skunk River At Colfax, IA |
| South Skunk River Below Squaw Creek Near Ames, IA |
| South Skunk River Near Ames, IA |
| South Skunk River Near Oskaloosa, IA |
| Spring Creek Near Mason City, IA |
| Squaw Creek At Ames, IA |
| Thompson River At Davis City, IA |
| Timber Creek Near Marshalltown, IA |
| Turkey River Above French Hollow Creek At Elkader, IA |
| Turkey River At Garber, IA |
| Turkey River At Spillville, IA |
| Turkey River Near Eldorado, IA |
| Upper Iowa River At Bluffton, IA |
