| WBID | Waterbody | Location | County(s) | IR Category | Impairment(s) |
| IA 02-ICM-00145-L_0 | Allen Green Refuge Marsh | Des Moines County S29T72NR1W 8 mi. E of Mediapolis. | Des Moines | 4c | hydrological modifications |
| IA 04-LDM-0350_0 | Bear Creek | mouth (T72N R14W Sec23) to headwaters (T71N R15W Sec7) Wapello Co. | Wapello | 5p | low DO |
| IA 03-SKU-0080_3 | Big Creek | from confluence with Brandywine Cr. (S29 T72N R6W Henry Co.) to Lawrence Cr. in S5 T71N R5W Henry Co. (Note: Segment boundary changed in 2004 to match 2002 WQ Standards.) | Henry | 5b | biological-fish kill |
| IA 01-WPS-0050_1 | Brophy Creek | mouth (S1, T80N, R4E, Clinton Co.) to confluence with Cherry Cr. in S17, T81N, R5E, Clinton Co. | Clinton | 5b-t | biological-fish/inverts |
| IA 01-NEM-0066_0 | Candlelight Creek | from mouth (SE1/4 S14 T78N R3E Scott Co.) to headwaters in NW1/4 S11 T78N R3E Scott Co. | Scott | 5p | bacteria |
| IA 03-SKU-0090_1 | Cedar Creek | mouth (S9, T71N, R7W, Henry Co.) to confluence with Little Cedar Cr. in S17, T70N, R7W, Henry Co. | Henry | 5a | bacteria |
| IA 03-NSK-0039_0 | Coal Creek | from mouth (SW 1/4, S36, T76N, R13W, Keokuk Co.) to headwaters in center, S17, T77N, R13W, Keokuk Co. | Keokuk | 5b | biological-fish kill |
| IA 01-NEM-0081_0 | Conduit Creek | mouth to headwaters | Scott | 4d | fish kill-restitution sought/received |
| IA 02-IOW-0040-L_0 | Coralville Reservoir | Johnson County S22T80NR6W (dam) 3 mi N of Iowa City. | Johnson | 5a | turbidity |
| IA 02-ICD-0031_1 | Cottonwood Drain | mouth (SE 1/4, S1, T70N, R2W, Des Moines Co.) to confluence with unnamed tributary in S13, T71N, R2W Des Moines Co. | Des Moines | 5b-t | biological-fish/inverts |
| IA 03-SKU-0116_0 | Crow Creek | from tributary(T72N R9W 31) to headwaters (T72N R10W Sec11) | Jefferson | 4d | fish kill-restitution sought/received |
| IA 04-LDM-0010_4 | Des Moines River | from confluence with Chequest Cr. (S27, T69N, R10W, Van Buren Co.) to confluence with Soap Cr. in S35, T71N, R12W, Wapel | Davis, Van Buren, Wapello | 5b | biological-fish kill |
| IA 04-LDM-0020_1 | Des Moines River | from confluence with Soap Cr. (S35, T71N,R12W, Wapello Co.) to lowhead dam at Ottumwa in S24, T72N, R14W, Wapello Co. | Davis, Wapello | 5a & 5b | bacteria; biological-fish kill |
| IA 04-LDM-0010_3 | Des Moines River | from confluence with Indian Cr. (S35, T68N, R8W, Van Buren Co.) to confluence with Chequest Cr. in S27, T69N, R10W, Van | Van Buren | 5b | biological-fish kill |
| IA 01-NEM-0060_1 | Duck Creek | mouth (S27, T78N, R4E, Scott Co.) to County Road (Sec 16-21, T78N R3E Scott Co.). (Note: Segment boundary and use desi | Scott | 5a | bacteria |
| IA 01-NEM-0060_2 | Duck Creek | County Road (Sec 16-21, T78N R3E Scott Co) to unnamed trib (SE Sec14 T78N R2E Scott Co.). (Note: Segment boundary cha | Scott | 5p | bacteria |
| IA 03-SKU-0126_0 | East Fork Crooked Creek | from confluence (T73N R05W Sec8) to headwaters (T72N R04W Sec16) | Des Moines, Henry | 5b | biological-fish kill |
| IA 01-MAQ-0030_1 | Elk River | mouth (Clinton Co.) to North Branch Elk River (S10, T83N, R6E, Clinton Co.) | Clinton | 5b-t | biological-fish/inverts |
| IA 02-IOW-0100_1 | English River | mouth (S12, T77N, R6W, Washington Co.) to confluence with Ramsey Cr. in S14, T77N, R8W, Washington Co. | Washington | 5a | bacteria |
| IA 03-SKU-00955-L_0 | Fairfield Municipal Reservoir #2 | Jefferson County SE 1/4S24T72NR10W near Fairfield. | Jefferson | 4a | siltation |
| IA 02-ICD-0020_3 | Flint Creek | from unnamed tributary (aka Big Hollow Cr.) (S25 T71N R4W Des Moines Co.) to confluence with unnamed tributary in S21 T71N R4W Des Moines Co. | Des Moines | 5b | biological-fish kill |
| IA 02-ICD-0021_0 | Flint Creek | from confluence with unnamed tributary (T71N R04W Sec21) to headwaters (T71N R05W Sec23 NW) | Des Moines, Henry | 5b | biological-fish kill |
| IA 04-FOX-0010_1 | Fox River | from the Iowa/Missouri state line to confluence with an unnamed tributary in NW 1/4, S6, T68N, R12W, Davis Co. | Davis, Van Buren | 5b-t | biological-fish/inverts |
| IA 04-FOX-0010_2 | Fox River | from unnamed tributary (NW 1/4, S6, T68N, R12W, Davis Co.) to confluence with unnamed tributary in S29, T69N, R15W, Davi | Davis | 5b-t | biological-fish/inverts |
| IA 03-SKU-00650-L_0 | Geode Lake | Henry County S36T70NR5W 4 mi. SW of Danville. | Des Moines, Henry | 5a & 4a | mercury (in fish); bacteria; pH |
| IA 01-NEM-0065_0 | Goose Creek | from mouth (NE1/4 S24 T78N R3E Scott Co.) to headwaters in S27 T79N R3E Scott Co. | Scott | 5p | bacteria |
| IA 04-LDM-00215-L_0 | Greater Ottumwa Central Park Ponds | Wapello County S25T72NR14W at Ottumwa. | Wapello | 5b & 4a | biological-fish kill; algae; turbidity; chlordane (in fish) |
| IA 02-IOW-0093_0 | Honey Creek | mouth (S1, T75N, R5W, Louisa Co.) to road crossing in S25, T76N, R5W, Louisa Co. | Louisa | 5b-t | biological-fish/inverts |
| IA 04-LDM-00150-L_0 | Indian Lake | Van Buren County S2T67NR8W 1 mi SW of Farmington. | Van Buren | 4a | noxious aquatic plants; organic enrichment |
| IA 02-IOW-01150-L_0 | Iowa Lake | Iowa County S19T79NR11W 4 mi. NNW of Millersburg. | Iowa | 5a | algae; pH |
| IA 02-IOW-0050_1 | Iowa River | from upper end of Coralville Reservoir (=U.S. Highway 218 bridge in SW 1/4, S22, T81N, R7W, Johnson Co.) to the state Hi | Iowa, Johnson | 5a | bacteria |
| IA 02-IOW-0030_1 | Iowa River | from confluence with English R. (Washington Co.) to Burlington Street Dam in Iowa City (Johnson Co.) | Johnson, Washington | 5a & 5b | bacteria; biological-mussels |
| IA 02-IOW-0020_1 | Iowa River | from confluence with Cedar R. to Johnson-Washington Co. line | Johnson, Louisa, Washington | 5a & 5b | bacteria; biological-mussels |
| IA 02-IOW-0030_2 | Iowa River | from Burlington St. dam in Iowa City (Johnson Co.) to Coralville Reservoir dam (Johnson Co.) | Johnson | 4a | bacteria |
| IA 02-IOW-01630-L_0 | Kent Park Lake | Johnson County S24T80NR8W 2.5 mi. W of Tiffin. | Johnson | 5a | algae; pH |
| IA 01-NEM-00115-L_0 | Klum Lake | Louisa County S25T75NR2W 2 mi. ESE of Grandview. | Louisa | 4c | hydrological modifications |
| IA 03-SKU-01450-L_0 | Lake Darling | Washington County S21T74NR9W 3 mi W of Brighton. | Washington | 5a & 4a | bacteria; nutrients; siltation |
| IA 02-IOW-00390-L_0 | Lake MacBride | Johnson County S29T81NR6W 4 mi. W of Solon. | Johnson | 5a & 4a | algae; bacteria; pH; nutrient; siltation |
| IA 01-NEM-00160-L_0 | Lake of the Hills | Scott County S25T78NR2E 1/4 mi W of Davenport. | Scott | 5a | algae; bacteria |
| IA 01-NEM-0053_0 | Mad Creek | mouth (S36 T77N R2W Muscatine Co.) to confluence with unnamed tributary in SE 1/4 S13 T77N R2W Muscatine Co. | Muscatine | 5a | bacteria |
| IA 04-LDM-0130_0 | Miller Creek | mouth (S7, T73N, R15W, Wapello Co.) to unnamed tributary in S29, T73N, R16W, Monroe Co. | Monroe, Wapello | 5b | biological-fish kill |
| IA 01-NEM-0010_4 | Mississippi River | from Wapsipinicon R. (Scott / Clinton Co. line) to Lock & Dam 13 at Clinton (Clinton Co.) | Clinton, Louisa, Muscatine, Scott | 5a | aluminum; organic enrichment (slime) |
| IA 01-NEM-0010_2 | Mississippi River | from Lock &Dam 15 at Davenport (Scott Co.) to Lock & Dam 14 at Le Claire (Scott Co.) (= Pool 15) (Davenport water supply | Scott | 5a | aluminum; arsenic; cadmium |
| IA 02-ICM-0010_2 | Mississippi River | from Burlington water supply intake (Des Moines Co.) to confluence with Iowa R (S36, T74N, R2W, Louisa Co.) | Des Moines, Louisa | 5a | aluminum; arsenic; cadmium; bacteria |
| IA 02-ICM-0010_1 | Mississippi River | from confluence with Skunk R. (S8, T68N, R2W, Des Moines Co.) to the Burlington water supply intake (Des Moines Co.). | Des Moines | 5a | bacteria |
| IA 03-SKM-0010_2 | Mississippi River | from confluence with Sugar Cr. (S23, T67N, R5W, Lee Co.) to confluence with Skunk R. | Des Moines, Lee | 5a | bacteria |
| IA 03-SKM-0010_1 | Mississippi River | IA/MO line to confluence with Sugar Cr. in S23, T67N, R5W, Lee Co. | Lee | 5a | aluminum, arsenic, bacteria, cadmium |
| IA 02-CED-0160_0 | Mud Creek | mouth (S10, T78N, R2W, Muscatine Co.) to confluence with unnamed tributary in S5, T78N, R1E, Muscatine Co. | Cedar, Muscatine | 4a | organic enrichment |
| IA 02-IOW-0162_0 | Muddy Creek | from mouth (S33, T80N, R6W, Johnson Co.) to headwaters in SW 1/4, S12, T80N, R7W, Johnson Co. | Johnson | 5a | sewage |
| IA 04-FAB-0010_0 | North Fabius River | IA/MO line to trib S33,T68N,R15W Davis Co | Davis | 5b-t | biological-fish/inverts |
| IA 03-NSK-0010_1 | North Skunk River | mouth (S5, T74N, R10W, Keokuk Co.) to confluence with Cedar Cr. in S15, T75N, R12W, Keokuk Co. | Keokuk | 5a | bacteria; chromium |
| IA 03-NSK-0010_2 | North Skunk River | from confluence with Cedar Cr. (S15, T75N, R12W, Keokuk Co.) to confluence with Middle Cr. in S35, T76N, R14W, Mahaska C | Keokuk, Mahaska | 5a | bacteria; chromium |
| IA 02-IOW-0150_2 | Old Mans Creek | from confluence with unnamed tributary (N line, S1, T78N, R7W, Johnson Co.) to confluence with unnamed tributary in NE 1 | Johnson | 5b & 5p | bacteria; biological-fish/inverts |
| IA 02-IOW-0150_1 | Old Mans Creek | mouth (NE 1/4, S27, T78N, R6W, Johnson Co.) to confluence with unnamed tributary at north line, S1, T78N, R7W, Johnson C | Johnson | 5b-t | biological-fish/inverts |
| IA 02-IOW-0086_0 | Otter Creek | from confluence with unnamed tributary(T73N R3W Sec4) to headwaters (T73N R4W Sec16) | Louisa | 4d | fish kill-restitution sought/received |
| IA 01-NEM-0064_0 | Pheasant Creek | from mouth (SW1/4NW1/4 S20 T78N R4E Scott Co.) to "ponds dam" in the NW1/4NE1/4 S6 T79N R4E Scott Co. | Scott | 5p | bacteria |
| IA 02-IOW-0152_0 | Picayune Creek | from mouth (T78N R06W Sec17) to headwaters (T78N R07W Sec19) | Johnson | 5b | biological-fish kill |
| IA 02-CED-0157_1 | Pike Run | mouth (SW 1/4, S19, T77N, R3W, Muscatine Co.) to confluence with unnamed tributary in S9, T77N, R3W, Muscatine Co. | Muscatine | 5b-v | biological-fish/inverts |
| IA 02-CED-0157_2 | Pike Run | from unnamed tributary (NW 1/4, S9, T77N, R3W, Muscatine Co.) to road crossing in SW 1/4, S34, T78N, R3W, Muscatine Co. | Muscatine | 5b-v | biological-fish/inverts |
| IA 02-IOW-0175_2 | Price Creek | from mouth of Mill Race (S26 T81N R9W Iowa Co.) to confluence with unnamed tributary in NW 1/4 S8 T81N R9W Iowa Co | Iowa | 5p | bacteria |
| IA 02-IOW-0176_0 | Price Creek | from confluence with unnamed trib in NW1/4 S8 T81N R9W Iowa Co. to headwaters in S31 T82N R10W Benton Co. | Iowa | 5p | bacteria |
| IA 02-IOW-0155_1 | Ralston Creek | from mouth (S15, T79N, R6W, Johnson Co.) to confluence with unnamed tributary in S11, T79N, R6W, Johnson Co. | Johnson | 5a | priority organics |
| IA 01-NEM-0067_0 | Robin Creek | from mouth (SW1/4 S14 T78N R3E Scott Co.) to headwaters in SW1/4 S10 T78N R3E Scott Co. | Scott | 5p | bacteria |
| IA 01-MAQ-0010_1 | Rock Creek | mouth (S31, T81N, R6E, Clinton Co.) to unnamed tributary in SW 1/4, NE 1/4, S30, T81N, R6E, Clinton Co. (upstream from | Clinton | 5a & 4a | low DO; ammonia; nitrogen |
| IA 03-SKU-0085_0 | Saunders Branch | mouth (SW 1/4, S17, T71N, R6W, Henry Co.) to headwaters | Henry | 5b-t | biological-fish/inverts |
| IA 02-IOW-0450_0 | Short Creek | from mouth (T75N R04W Sec19) to headwaters(T75N R06W Sec3) | Louisa, Washington | 4d | fish kill-restitution sought/received |
| IA 01-MAQ-0005-L_0 | Shrickers Slough | approximately 2 miles SW of Camanche in Sections 5 6 and 7 of T80N R6E Clinton Co. | Clinton | 5a | algae; turbidity |
| IA 01-NEM-0068_1 | Silver Creek | from mouth (SE1/4 SE1/4 S16 T78N R3E Scott Co.) to confluence with unnamed trib in SW1/4 S33 T79N R3E Scott Co. | Scott | 5a | bacteria |
| IA 03-SKU-0081_0 | South Big Creek | from confluence with Lawrence Creek (T71N R5W Sec5) to headwaters (T72N R4W Sec20) | Des Moines, Henry | 5b | biological-fish kill |
| IA 03-SSK-0010_2 | South Skunk River | from the Highway 21 bridge (S34,T75N, R13W, Keokuk Co.) to the Highway 63 bridge north of Oskaloosa in S25, T76N, R16W, | Keokuk, Mahaska | 5a | bacteria; nitrate |
| IA 01-NEM-0063_0 | Stafford Creek | from mouth (SE1/4 S21 T78N R4E Scott Co.) to headwaters in SW1/4 S9 T78N R4E Scott Co. | Scott | 5p | bacteria |
| IA 02-CED-0170_1 | Sugar Creek | mouth (S17, T78N, R2W, Muscatine Co.) to confluence with Mud Cr. in S10, T78N, R2W, Muscatine Co. | Muscatine | 5b-t | biological-fish/inverts |
| IA 04-LDM-0119_0 | Sugar Creek | mouth (NE 1/4, S32, T72N, R13W, Wapello Co.) to headwaters in S6, T72N, R13W, Wapello Co. | Wapello | 4d | fish kill-restitution sought/received |
| IA 02-CED-0163_0 | Unnamed Tributary to Mud Creek | from mouth (T79N R1W Sec34) to headwaters (T79N R1W Sec3) | Cedar | 5b | biological-fish kill |
| IA 02-IOW-01525_0 | Unnamed Tributary to Picayune Creek | from mouth (T78N R07W Sec23) to headwaters (T78N R07W Sec20 NW) | Johnson | 5a | biological-fish kill |
| IA 02-IOW-0451_0 | Unnamed Tributary to Short Creek | from mouth (T75N R04W Sec19) to headwaters(T75N R05W Sec36) | Louisa | 4d | fish kill-restitution sought/received |
| IA 03-SKU-01651_0 | Unnamed Tributary to Unnamed Tributary to Richland Creek | from mouth (T74N R10W Sec32) to headwaters (T73N R11W Sec12) | Jefferson | 4d | fish kill-restitution sought/received |
| IA 02-CED-01545_0 | Unnamed Tributary to West Branch Wapsinonoc Creek (aka Hoover Creek) | from mouth (T79N R04W Sec08, Cedar Co.) to headwaters (T80N R05W Sec25, Johnson Co. ) | Cedar, Johnson | 5p | bacteria |
| IA 03-SKU-00945-L_0 | Walton Reservoir | Jefferson County S30T72NR9W at NE edge of Fairfield. | Jefferson | 5a | atrazine |
| IA 01-WPS-0010_1 | Wapsipinicon River | mouth (Scott-Clinton county line) to confuence with Silver Cr. in NW 14, S6, T80N, R4E, Clinton Co. | Clinton, Jones, Scott | 5a | bacteria |
| IA 01-WPS-0010_2 | Wapsipinicon River | from Silver Cr. (NW 14, S6, T80N, R4E, Clinton Co.) to confuence Rock Cr. in S35, T81N, R1E, Clinton Co.) | Clinton, Scott | 5a | bacteria |
| IA 03-SKU-0130_0 | West Fork Crooked Creek | mouth to trib S21,T76N,R9W Washington Co | Washington | 5b | biological-fish kill |