| WBID | Waterbody | Location | Counties | IR Category | Impairment(s) |
| IA 06-WED-00270-L_0 | Arrowhead Pond | Pottawattamie County S29 T77N R41W 1.5 mi SE of Neola | Pottawattamie | 5a | Noxious aquatic plants--Nutrients--Organic enrichment/Low DO--pH--Siltation--Suspended solids--Turbidity |
| IA 06-WEM-00450-L_0 | Badger Lake | Monona County S29 T85N R46W 4 mi. WNW of Whiting. | Monona | 4c | Flow alteration |
| IA 05-NOD-00415-L_0 | Binder Lake | Adams County S25 T72N R34W 1 mile NE of Corning. | Adams | 4c | Exotic species--Other |
| IA 06-WEM-00420-L_0 | Blencoe Lake | Monona County S31 T82N R45W 5 mi. SW of Blencoe | Monona | 4c | Flow alteration--Siltation |
| IA 06-WEM-00445-L_0 | Blue Lake (aka, Lewis And Clark Lake) | Monona County S35 T84N R46W 2 mi. W of Onawa. | Monona | 5a | Algal Grwth/Chlorophyll a--Turbidity |
| IA 05-NSH-0067_0 | Bluegrass Creek | mo to trib S34 T80N R35W Audubon Co. | Audubon | 4d | Organic enrichment/Low DO--Unionized Ammonia |
| IA 04-RAC-0251_0 | Brushy Creek | from Guthrie/Audubon county line (west line S6 T81N R33W Guthrie Co.) to confluence with an unnamed tributary in S6 T82N R34W Carroll Co. | Audubon--Carroll | 5b | Organic enrichment/Low DO--Unionized Ammonia |
| IA 06-WEM-00265-L_0 | Carter Lake | Pottawattamie County S23 T75N R44W at Carter Lake. | Pottawattamie | 5a | Algal Grwth/Chlorophyll a--Noxious aquatic plants--Nutrients--Other--Pathogens--PCB's--Turbidity |
| IA 05-NSH-00310-L_0 | Cold Springs Lake | Cass County S15 T75N R37W 1 mi S of Lewis. | Cass | 5a | Algal Grwth/Chlorophyll a--Noxious aquatic plants--Nutrients--pH--Turbidity |
| IA 05-NSH-0063_0 | Davids Creek | mouth (S4 T79N R35W Audubon Co.) to Honey Cr. in S31 T79N R34W Audubon Co. | Audubon | 5b | Organic enrichment/Low DO--Unionized Ammonia |
| IA 06-WEM-00340-L_0 | Desoto Bend | Harrison County S21 T78N R45W 5 mi. W of Missouri Valley. | Harrison--Pottawattamie | 5a | Algal Grwth/Chlorophyll a--Nutrients--Turbidity |
| IA 05-NOD-0030_2 | East Nodaway River | Long Branch Cr (at W line S17 T70N R35W Taylor Co.) to Kemp Cr at E line S11 T71N R35W Adams Co. | Adams--Taylor | 5b | Cause Unknown |
| IA 05-NSH-0133_0 | Jordan Creek | mouth (S31 T74N R39W Pottawattamie Co.) to confluence with Spring Cr. in S4 T74N R39W Pottawattamie Co. | Pottawattamie | 5b | Siltation |
| IA 06-WED-0010_2 | Keg Creek | from confluence with Little Keg Cr. (S27 T75N R42W Pottawattamie Co.) to confluence with unnamed tributary in S35 T78N R41W Harrison Co. | Pottawattamie | 5b | Cause Unknown |
| IA 06-WED-0010_1 | Keg Creek | mouth (S6 T71N R43W Mills Co.) to confluence with Little Keg Cr. in S27 T75N R42W Pottawattamie Co. | Harrison--Mills--Pottawattamie | 5b | Other habitat alterations--Siltation |
| IA 05-NOD-00550-L_0 | Lake Icaria | Adams County S10 T72N R34W 4 mi N of Corning. | Adams | 4a | Noxious aquatic plants--Nutrients--Siltation--Turbidity |
| IA 06-WEM-00235-L_0 | Lake Manawa | Pottawattamie County S13 T74N R44W S edge Council Bluffs | Pottawattamie | 5a | Algal Grwth/Chlorophyll a--Noxious aquatic plants--Other--Turbidity |
| IA 05-PLA-00335-L_0 | Lake Of Three Fires | Taylor County S12 T68N R34W 2 mi NNE of Bedford. | Taylor | 5a | Algal Grwth/Chlorophyll a--Noxious aquatic plants--Nutrients--Organic enrichment/Low DO--Pathogens--Siltation--Turbidity |
| IA 05-NSH-00675-L_0 | Littlefield Lake | Audubon County S17 T78N R34W approx 4 mi SE of Exira. | Audubon | 4a | Algal Grwth/Chlorophyll a--Noxious aquatic plants--Nutrients--pH--Siltation--Turbidity |
| IA 05-GRA-01920-L_0 | Loch Ayr | Ringgold County S30 T69N R29W 2 miles N of Mt. Ayr. | Ringgold | 5a | Atrazine |
| IA 05-GRA-0170_0 | Lotts Creek | IA/MO line (S24 TT67N R29W Ringgold Co.) to confluence with Tuckers Cr. in S12 T67N R29W Ringold Co. | Ringgold | 5b | Cause Unknown |
| IA 04-RAC-0123_0 | Marrowbone Creek | mouth to trib S17 T85N R33W Carroll Co. | Carroll | 5b | Organic enrichment/Low DO--Other habitat alterations--Siltation |
| IA 04-LDM-02870-L_0 | Meadow Lake | Adair County S17 T76N R31W 5 mi N of Greenfield. | Adair | 5a | Algal Grwth/Chlorophyll a--Noxious aquatic plants--Nutrients--Siltation |
| IA 05-GRA-0180_0 | Middle Fork Grand River | IA/MO line to trib S13 T68N R30W Ringgold | Ringgold | 5b | Cause Unknown |
| IA 05-NOD-0070_0 | Middle Nodaway River | from confluence with West Fork Middle Nodaway R. (S33 T74N R33W Adair Co.) to confluence with unnamed tributary in S1 T75N R32W Adair Co. | Adair | 5b | Cause Unknown |
| IA 04-RAC-0200_3 | Middle Raccoon River | from Panora DW intake to Lake Panorama dam | Guthrie | 5a | Flow alteration--Nitrate--Other habitat alterations--Unknown toxicity |
| IA 05-NSH-0034_0 | Mill Creek | Confluence with trib S15 T67N R41W Fremont Co. to headwaters | Fremont | 4d | Other |
| IA 06-WEM-0030_0 | Missouri River | from confluence with Boyer R. (Pottawattamie Co.) to confluence with Little Sioux R. at river mile 669.2 in Harrison Co. | Harrison--Pottawattamie | 5a | Flow alteration--Other habitat alterations--Pathogens |
| IA 06-WEM-0040_2 | Missouri River | from confluence with Elm Cr. (S18 T83N R46W Monona Co. at river mile 691.0 at Decatur NE.) to confluence with Omaha Creek Ditch east of Homer NE at river mile 715.8 (=SW 1/4 S6 T86N R47W Woodbury Co. (near Browns Lake)). | Monona--Woodbury | 5a | Flow alteration--Other habitat alterations--Pathogens |
| IA 06-WEM-0040_1 | Missouri River | from confluence with Little Sioux R. (Harrison Co.) to confluence with Elm Cr. at river mile 691.0 at Decatur NE (=S18 T83N R46W Monona Co.). | Harrison--Monona | 5a | Flow alteration--Other habitat alterations--Pathogens |
| IA 06-WEM-0020_1 | Missouri River | from confluence with Platte R. (Mills Co.) to the water supply intake at Council Bluffs near River Mile 619 in SE 1/4 S22 T75N R44W Pottawattamie Co. | Mills--Pottawattamie | 5a | Flow alteration--Other habitat alterations--Pathogens |
| IA 06-WEM-0010_0 | Missouri River | from the Iowa/Missouri state line (Fremont Co.) to confluence with Platte R. west of Glenwood in Mills Co. | Fremont--Mills | 5a | Flow alteration--Other habitat alterations--Pathogens |
| IA 06-WEM-0020_2 | Missouri River | from water supply intake at Council Bluffs (River Mile 619 in SE 1/4 S22 T75N R44W Pottawattamie Co.) to confluence with Boyer R. in Pottawattamie Co. | Pottawattamie | 5a | Arsenic--Flow alteration--Other habitat alterations--Pathogens |
| IA 06-WED-0020_3 | Mosquito Creek | from confluence with Little Mosquito Cr. S29 T75N R43W Pottawattamie Co.) to confluence with Spring Cr. in S9 T78N R41W Harrison Co. | Harrison--Pottawattamie | 5b | Organic enrichment/Low DO--Other habitat alterations |
| IA 06-WED-0030_0 | Mosquito Creek | from confluence with Spring Cr. (S9 T78N R41W Harrison Co.) to confluence with Moser Cr. in NW 1/4 S12 T80N R40W Shelby Co. | Harrison--Shelby | 4c | Other habitat alterations |
| IA 04-RAC-02401_0 | Mosquito Creek | from confluence with unnamed tributary in S21 T81N R30W Guthrie Co. to headwaters in SW 1/4 S19 T81N R31W Guthrie Co. | Guthrie | 5b | Unionized Ammonia |
| IA 06-WED-0020_2 | Mosquito Creek | from drinking water intake for Lake Manawa (center S7 T74N R43W Pottawattamie Co.) to confluence with Little Mosquito Cr. in S29 T75N R43W Pottawattamie Co. | Pottawattamie | 5b | Organic enrichment/Low DO--Other habitat alterations |
| IA 06-WED-0020_1 | Mosquito Creek | mouth (S30 T74N R43W Pottawattamie Co.) to the drinking water intake for Lake Manawa in center S7 T74N R43W Pottawattamie Co. | Pottawattamie | 5b | Organic enrichment/Low DO--Other habitat alterations |
| IA 04-RAC-0040_1 | North Raccoon River | from confluence with Buttrick Cr. (S26 T83N R30W Greene Co.) to confluence with Short Cr. in S33 T84N R31W Greene Co. | Greene | 5a | Pathogens |
| IA 05-NOD-00485-L_0 | Orient Lake | Adair County S20 T74N R31W approx 1 mi SW of Orient. | Adair | 4a | Nutrients--Other--Siltation--Turbidity |
| IA 06-BOY-0025_0 | Picayune Creek | mouth to headwaters | Harrison--Shelby | 4d | Unionized Ammonia |
| IA 05-NSH-00220-L_0 | Pierce Creek Pond | Page County S29 T70N R39W 4 mi N of Shenandoah. | Page | 4a | Algal Grwth/Chlorophyll a--Exotic species--Nutrients--Siltation--Turbidity |
| IA 05-NSH-01440-L_0 | Prairie Rose Lake | Shelby County S36 T79N R38W 6 mi SE of Harlan. | Shelby | 5a | Algal Grwth/Chlorophyll a--Noxious aquatic plants--Nutrients--Pathogens--Turbidity |
| IA 06-WEM-00452-L_0 | Rabbit Island Lake | Monona County S28 T85N R47W 10 mi. WNW of Whiting. | Monona | 4c | Flow alteration |
| IA 06-WEM-00380-L_0 | Round Lake | Harrison County S13 T80N R45W 2 mi. NNW of Mondamin. | Harrison | 4c | Flow alteration--Siltation |
| IA 05-PLA-0015-L_0 | Sands Timber Lake (aka, Blockton Reservoir) | S2 T67N R32W Taylor Co. | Taylor | 5a | Exotic species--Turbidity |
| IA 05-NSH-0120_0 | Silver Creek | from Middle Silver Cr. (S31 T74N R41W Pottawattamie Co.) to confluence with Little Silver Cr. in S34 T78N R40W Shelby Co. | Pottawattamie--Shelby | 5b | Cause Unknown |
| IA 04-RAC-00805-L_0 | Spring Lake | Greene County S25 T84N R30W 3 mi NW of Grand Junction. | Greene | 4a | Noxious aquatic plants--Turbidity |
| IA 04-RAC-02370-L_0 | Swan Lake | Carroll County S31 T84N R34W 3 mi. SE of Carroll. | Carroll | 4a | Algal Grwth/Chlorophyll a--Exotic species--Noxious aquatic plants--Nutrients--pH--Suspended solids--Turbidity |
| IA 05-GRA-01410-L_0 | Thayer Lake | Union County S22 T72N R28W 1 mi SW of Thayer. | Union | 5a | Algal Grwth/Chlorophyll a--Noxious aquatic plants--Nutrients--Siltation--Suspended solids--Turbidity |
| IA 06-WEM-00422-L_0 | Upper Blencoe Bend | Monona County S7 T82N R46W 4 mi. SW of Blencoe. | Monona | 4c | Flow alteration--Siltation |
| IA 05-NOD-00930-L_0 | Viking Lake | Montgomery County S6 T71N R36W 4 mi. E of Stanton. | Montgomery | 5a | Algal Grwth/Chlorophyll a--Noxious aquatic plants--Nutrients--Pathogens--Turbidity |
| IA 05-PLA-0040_1 | West Branch One Hundred And Two River | mouth (NW 1/4 S10 T68N R35W Taylor Co.) to confluence with Middle Branch One Hundred and Two R. in S6 T69N R34W Taylor Co. | Taylor | 5b | Nutrients--Other habitat alterations |
| IA 05-NSH-0090_3 | West Nishnabotna River | from confluence with Elk Cr. (S36 T81N R38W Shelby Co.) to the Crawford-Carroll county line (west line S36 T82N R37W Crawford Co.) | Crawford--Shelby | 5b | Cause Unknown |
| IA 05-TAR-0020_0 | West Tarkio Creek | from the Iowa/Missouri state line to confluence with an unnamed tributary in S9 T69N R38W Page Co. | Page | 5b | Cause Unknown |
| IA 05-PLA-00380-L_0 | Wilson Park Lake | Taylor County S28 T70N R32W 3 mi SSE of Lenox. | Taylor | 5a | Algal Grwth/Chlorophyll a--Noxious aquatic plants--Nutrients--pH--Siltation--Turbidity |
| IA 05-PLA-00430-L_0 | Windmill Lake | Taylor County S36 T69N R35W 4 mi E of New Market. | Taylor | 5a | Algal Grwth/Chlorophyll a--Noxious aquatic plants--Nutrients--pH--Turbidity |
| IA 06-BOY-00510-L_0 | Yellow Smoke Park Lake | Crawford County S6 T83N R38W 2 mi NE of Denison. | Crawford | 4a | Siltation |
