WBID	Waterbody	Location	Counties	IR Category	Impairment(s)
IA 02-ICM-00145-L_0	Allen Green Refuge Marsh	Des Moines County S29 T72N R1W 8 mi. E of Mediapolis.	Des Moines	4c	Flow alteration
IA 03-SKU-0080_1	Big Creek	mo to Saunders Br S17 T71N R6W Henry Co.	Henry	4d	Organic enrichment/Low DO--Unionized Ammonia
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	Cause Unknown
IA 02-CED-0020_2	Cedar River	from Rock Run Cr. (S28 T80N R3W Cedar Co ) to Hwy 30 bridge at Cedar Rapids in S9 T82N R6W Linn Co.	Cedar--Johnson--Linn	5a	Flow alteration--Nutrients--Other habitat alterations--Pathogens--Siltation
IA 02-IOW-0161_0	Clear Creek	from confluence with tributary in Sec. 22 T80N R9W (Iowa Co.) to headwaters in S28 T80N R10W (Iowa Co.	Iowa	5a	Organic enrichment/Low DO
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	Organic enrichment/Low DO--Unionized Ammonia
IA 02-IOW-0040-L_0	Coralville Reservoir	Johnson County S22 T80N R6W (dam) 3 mi N of Iowa City.	Johnson	5a	Organic enrichment/Low DO--Suspended solids--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	Cause Unknown
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 Wapello Co.	Davis--Van Buren--Wapello	5b	Cause Unknown
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	Cause Unknown--Pathogens
IA 04-LDM-0020_2	Des Moines River	from Ottumwa dam (S24 T72N R14W Wapello Co.) to confluence with Cedar Cr in S33 T75N R17W Mahaska Co.	Mahaska--Monroe--Wapello	5a	Pathogens
IA 01-NEM-0060_1	Duck Creek	mouth (S27 T78N R4E Scott Co.) to County Road (Sec 16-21 T78N R3W Scott Co.). (Note: Segment boundary and use designations changed in 2004 to match 2002 WQ Standards.)	Scott	5a	Pathogens
IA 01-MAQ-0030_1	Elk River	mouth (Clinton Co.) to North Branch Elk River (S10 T83N R6E Clinton Co.)	Clinton	5b	Cause Unknown
IA 03-SKU-00955-L_0	Fairfield Municipal Reservoir2	Jefferson County SE 1/4 S24 T72N R10W near Fairfield.	Jefferson	4a
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 Davis Co.	Davis	5b	Organic enrichment/Low DO--Other habitat alterations--Unionized Ammonia
IA 03-SKU-00650-L_0	Geode Lake	Henry County S36 T70N R5W 4 mi. SW of Danville.	Des Moines--Henry	5a	Nutrients--Pathogens--pH--Siltation
IA 02-IOW-0093_0	Honey Creek	mouth (S1 T75N R5W Louisa Co.) to road crossing in S25 T76N R5W Louisa Co.	Louisa	5b	Cause Unknown
IA 04-LDM-00150-L_0	Indian Lake	Van Buren County S2 T67N R8W 1 mi SW of Farmington.	Van Buren	4a	Algal Grwth/Chlorophyll a--Noxious aquatic plants--Nutrients--Organic enrichment/Low DO--pH--Turbidity
IA 02-IOW-01150-L_0	Iowa Lake	Iowa County S19 T79N R11W 4 mi. NNW of Millersburg.	Iowa	5a	Algal Grwth/Chlorophyll a--Noxious aquatic plants--Nutrients--pH--Turbidity
IA 02-IOW-0020_1	Iowa River	from confluence with Cedar R. to Johnson-Washington Co. line	Johnson--Louisa--Washington	5b	Nutrients--Other habitat alterations--Siltation
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	Flow alteration--Nutrients--Other habitat alterations--Pathogens--Siltation
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 Highway 149 bridge in S35 T81N R9W Iowa Co.	Iowa--Johnson	5a	Pathogens
IA 02-IOW-0020_2	Iowa River	Johnson/Washington county line to English R.	Johnson--Washington	5b	Nutrients--Other habitat alterations--Siltation
IA 01-NEM-00115-L_0	Klum Lake	Louisa County S25 T75N R2W 2 mi. ESE of Grandview.	Louisa	4c	Flow alteration
IA 03-SKU-01450-L_0	Lake Darling	Washington County S21 T74N R9W 3 mi W of Brighton.	Washington	5a	Nutrients--Pathogens--Siltation--Turbidity
IA 02-IOW-00390-L_0	Lake Macbride	Johnson County S29 T81N R6W 4 mi. W of Solon.	Johnson	5a	Exotic species--Nutrients--Pathogens--Siltation--Turbidity
IA 01-NEM-00160-L_0	Lake Of The Hills	Scott County S25 T78N R2E 1/4 mi W of Davenport.	Scott	5a	Algal Grwth/Chlorophyll a--Siltation--Turbidity
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	Cause Unknown--Organic enrichment/Low DO
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	Arsenic--Metals--Pathogens
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	Pathogens
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	Pathogens
IA 01-NEM-0010_1	Mississippi River	from Iowa R. (Louisa Co.) to Lock & Dam 15 at Davenport Scott Co.	Louisa--Muscatine--Scott	5a	Pathogens
IA 01-NEM-0010_3	Mississippi River	from Lock &Dam 14 at Le Claire (Scott Co.) to confluence with Wapsipinicon R. (Scott / Clinton county line).	Scott	5a	Pathogens
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 intake is located near river mile 484.)	Scott	5a	Arsenic--Metals--Pathogens--PCB's
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	Metals--Nutrients--Pathogens
IA 03-SKM-0010_1	Mississippi River	IA/MO line to confluence with Sugar Cr. in S23 T67N R5W Lee Co.	Lee	5a	Arsenic--Metals--Pathogens--PCB's
IA 04-LDM-0140_1	Muchakinock Creek	mouth (SW 1/4 NW 1/4 S6 T73N R15W Wapello Co.) to confluence with Little Muchakinock Cr. in S34 T75N R16W Mahaska Co.	Mahaska--Monroe--Wapello	5b	Nutrients--Other habitat alterations--Unknown toxicity
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	Nutrients--Organic enrichment/Low DO--Other habitat alterations--Siltation
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	Other--Unionized Ammonia
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 1/4 S4 T78N R8W Johnson Co.	Johnson	5b	Cause Unknown
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 Co. (approx. 1/2 mile downstream from county road W62).	Johnson	5b	Cause Unknown
IA 04-LDM-00215-L_0	Ottumwa Lagoon	Wapello County S25 T72N R14W at Ottumwa.	Wapello	4a	Algal Grwth/Chlorophyll a--Nutrients--Organic enrichment/Low DO--Pesticides--Turbidity
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	Cause Unknown
IA 01-MAQ-0130_0	Prairie Creek	mouth (S17 T84N R3E Jackson Co.) to unnamed tributary in S2 T83N R2E Clinton Co.	Clinton--Jackson	5b	Cause Unknown
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-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 PCS Nitrogen).	Clinton	4a	Unionized Ammonia
IA 03-SKU-0085_0	Saunders Branch	mouth (SW 1/4 S17 T71N R6W Henry Co.) to headwaters	Henry	5a	Organic enrichment/Low DO--Priority organics--Unionized Ammonia
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	Algal Grwth/Chlorophyll a--Nutrients--Organic enrichment/Low DO--Turbidity--Unionized Ammonia
IA 03-SKU-0010_1	Skunk River	mouth to confluence with Big Cr. southeast of Mt. Pleasant in S19 T70N R5W in Henry Co.	Des Moines--Henry--Lee	5a	Pesticides
IA 04-LDM-0090_2	Soap Creek	from confluence with Little Soap Cr. (S1 T70N R13W Davis Co.) to confluence with unnamed tributary in S31 T71N R16W MonroeCo	Appanoose--Davis--Monroe	5b	Cause Unknown
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	5b	Other
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	Nutrients--Organic enrichment/Low DO--Other habitat alterations--Siltation
IA 04-LDM-0133_0	Unnamed Creek (near Eddyville)	mouth (SW 1/4 S6 T73N R15W Wapello Co.) to headwaters in S11 T73N R16W Monroe Co.	Monroe--Wapello	4d	Organic enrichment/Low DO--Unionized Ammonia
IA 02-IOW-01615_0	unnamed tributary to Clear Creek	from mouth (NW 1/4 S26 T80N R10W Iowa Co.) to headwaters in S21 T80N R10W Iowa Co.	Iowa	5a	Organic enrichment/Low DO
IA 02-IOW-0187_1	Walnut Creek	mouth (S31 T82N R12W Benton Co.) to confluence with North Walnut Cr in S7 T81N R13W Poweshiek Co. trib S24 T81N R15W Poweshiek Co.	Benton--Iowa--Poweshiek	5b	Cause Unknown
IA 03-SKU-00945-L_0	Walton Reservoir	Jefferson County S30 T72N R9W at NE edge of Fairfield.	Jefferson	5a	Atrazine
IA 01-WPS-0010_4	Wapsipinicon River	from Plum Cr. (S18 T82N R1E Clinton Co.) to confuence with Walnut Cr. in S18 T83N R2W Jones Co.	Cedar--Clinton--Jones	5b	Flow alteration--Nutrients--Siltation
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	Pathogens
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	Pathogens
IA 03-SKU-0130_0	West Fork Crooked Creek	mouth to trib S21 T76N R9W Washington Co	Washington	5b	Cause Unknown