| NWS ID | Station | HGI | HPI | HTI | MVI | PCI | PPC | PPH | PPJ | QRI | QTI | RWH | TAH | TAI | TVI | TWI | UDH | UDI | UPJ | UPV | USH | USI | VBI | WTI | WVI |
| ADEI4 | Adel - North Raccoon River | 891.23 | | | | | | | | | | | | | | | | | | | | | | | |
| AESI4 | South Skunk River 2 SSE Ames US 30 | 13.54 | | | | 34.46 | | 0 | | 1.42 | | | | | | | | | | | | | | | |
| AGAI4 | East Fork Des Moines River 8 S IFC--Algona Hwy B63 | 1091.4 | | | | | | | | | | | | | | | | | | | | | | | |
| AGNI4 | East Fork Des Moines River 1 N Algona | 11.22 | | | | 32.52 | | 0 | | | | | | | | | | | | | | | | | |
| AGRI4 | CEDAR RIVER 2 S St. Ansgar | 1097.36 | | | | | | | | | | | | | | | | | | | | | | | |
| AKRI4 | Big Sioux River 1 NW Akron | 6.37 | | | | 94.18 | | 0 | | 1.09 | | | | | | | | | | | | | | | |
| AKWI4 | South River 2 SSW Ackworth | 13.66 | | | | 6.27 | | 0 | | | | | | | | | | | | | | | 12.18 | | |
| ALFI4 | Fourmile Creek 4 WNW IFC--Altoona NE 54th Ave | 826.41 | | | | | | | | | | | | | | | | | | | | | | | |
| ALOI4 | Cedar River 0 ENE Waterloo | 8.96 | | | | 109.28 | | 0 | | 12.2 | | | | | | | | | | | | | | | |
| ALSI4 | South Fork Iowa River 5 W IFC--Alden Hwy D20 | 1126.83 | | | | | | | | | | | | | | | | | | | | | | | |
| ALTI4 | Floyd River AT Alton | 6.26 | | | | 76.39 | | 0 | | | | | | | | | | | | | | | 12.18 | | |
| AMAI4 | Amana - Price Creek USGS | 82.02 | | | | | | | | | | | | | | | | | | | | | | | |
| AMDI4 | Ames 2SSE - IFC Ioway Creek Duff | 874.13 | | | | | | | | | | | | | | | | | | | | | | | |
| AMEI4 | South Skunk River 2 N Ames W Riverside Rd | 5.52 | | | | 24.11 | | 0 | | 0.853 | | | | | | | | | | | | | | | |
| AMMI4 | AMES SCAN | | | | 55.6 | | | | | | | 111.9 | 33.4 | 35.1 | 42 | | 1 | | | | 9 | 14.1 | | | |
| AMPI4 | Amana - Price Creek | 712.23 | | | | | | | | | | | | | | | | | | | | | | | |
| AMQI4 | Ames 1W - IFC Ioway Creek at Stange Rd | 890.25 | | | | | | | | | | | | | | | | | | | | | | | |
| AMRI4 | South Skunk River 1 E IFC--Ames E 13th St | 880.3 | | | | | | | | | | | | | | | | | | | | | | | |
| AMWI4 | Ames 1SSW - Ioway Creek at Lincoln Way | 2.93 | | | | | | | | 0.453 | | | | | | | | | | | | | | | |
| ANFI4 | Fourmile Creek 3 NNE IFC--Ankeny NE 47th St | 909.56 | | | | | | | | | | | | | | | | | | | | | | | |
| ANKI4 | Fourmile Creek 2 ESE Ankeny NE 86th Ave | 5.22 | | | | | | | | | | | | | | | | | | | | | 12.18 | | |
| ANSI4 | Wapsipinicon River 1 SE Anamosa Shaw Rd | 13.3 | | | | 36.85 | | 0 | | | | | | | | | | | | | | | | | |
| AONI4 | Onion Creek 4 WNW IFC--Ames Hwy R38 | 955.95 | | | | | | | | | | | | | | | | | | | | | | | |
| APEI4 | Aplington - Drainage Ditch | 948.97 | | | | | | | | | | | | | | | | | | | | | | | |
| ATCI4 | East Nishnabotna River 5 SW Atlantic | 4.38 | | | | 47.17 | | 0 | | 0.672 | | | | | | | | | | | | | | | |
| NWS ID | Station | HGI | HPI | HTI | MVI | PCI | PPC | PPH | PPJ | QRI | QTI | RWH | TAH | TAI | TVI | TWI | UDH | UDI | UPJ | UPV | USH | USI | VBI | WTI | WVI |
| ATDI4 | Atkins - Dry Creek | 779.63 | | | | | | | | | | | | | | | | | | | | | | | |
| BANI4 | Elgin - Otter Creek | 884.52 | | | | | | | | | | | | | | | | | | | | | | | |
| BASI4 | Bassett - Beaver Creek | 1038.5 | | | | | | | | | | | | | | | | | | | | | | | |
| BAYI4 | Middle Raccoon River 6 SE Bayard | 11.6 | | | | 3.45 | | 0.01 | | | | | | | | | | | | | | | 12.18 | | |
| BCCI4 | Batavia 3ENE | 670.7 | | | | | | | | | | | | | | | | | | | | | | | |
| BCRI4 | Boone County | | | | | | | | 0 | | | | | | | | | | | | | | | | |
| BEAI4 | Beaver Creek 3 SSE IFC--Beaver Hwy P54 | 976.15 | | | | | | | | | | | | | | | | | | | | | | | |
| BHCI4 | Davenport - Black Hawk Creek at S Concord St | 553.69 | | | | | | | | | | | | | | | | | | | | | | | |
| BHLI4 | Black Hawk Lake 1 SE Lake View | | 8.05 | | | | | | | | | | | | | | | | | | | | | | |
| BIGI4 | Polk City 1SE - Big Creek Pounding | 37.56 | | | | 6.78 | | 0 | | | | | | | | | | | | | | | 13.12 | | |
| BLBI4 | Blairsburg | | | | | | | | 0 | | | | | | | | | | | | | | | | |
| BLFI4 | Upper Iowa River AT Bluffton | 4.69 | | | | 0.4 | | | | | | | | | | | | | | | | | | | |
| BLII4 | South Fork Iowa River 5 NNE Blairsburg | 5.39 | | | | | | | | | | | | | | | | | | | | | | | |
| BLVI4 | Mississippi River AT Bellevue LD12 | | 12 | 11.61 | | 4.37 | | 0 | | | 100.12 | | | 44.62 | | 47.8 | | 4 | | 9.47 | | 6.19 | 13.73 | | |
| BNDI4 | Brainard - Otter Creek | 976.92 | | | | | | | | | | | | | | | | | | | | | | | |
| BNLI4 | Brandon - Lime Creek | 787.71 | | | | | | | | | | | | | | | | | | | | | | | |
| BNNI4 | Brandon - North Bear Creek | 804.65 | | | | | | | | | | | | | | | | | | | | | | | |
| BOCI4 | Burr Oak Creek 4 N Perkins | 12.15 | | | | | | | | | | | | | | | | | | | | | | | |
| BODI4 | Des Moines River 3 WSW IFC--Boone Hwy E41 | 868.78 | | | | | | | | | | | | | | | | | | | | | | | |
| BPCI4 | Prairie Creek 6 W IFC--Gilbert V Ave | 962.69 | | | | | | | | | | | | | | | | | | | | | | | |
| BPLI4 | Iowa River 3 S Belle Plaine | 16.15 | | | | 88.53 | | | | | | | | | | | | | | | | | | | |
| BRAI4 | East Nishnabotna River 2 SSW IFC--Brayton 345th St | 1175.09 | | | | | | | | | | | | | | | | | | | | | | | |
| BRII4 | BRIGHTON | 606.1 | | | | | | | | | | | | | | | | | | | | | | | |
| BRLI4 | Mississippi River AT Burlington | 14.59 | | | | 12.34 | | 0 | | | | | | | | | | | | | | | | | |
| BSCI4 | Story City 8W - IFC Ioway Creek 120th | 972.66 | | | | | | | | | | | | | | | | | | | | | | | |
| NWS ID | Station | HGI | HPI | HTI | MVI | PCI | PPC | PPH | PPJ | QRI | QTI | RWH | TAH | TAI | TVI | TWI | UDH | UDI | UPJ | UPV | USH | USI | VBI | WTI | WVI |
| BSFI4 | South Fork Iowa River 3 N IFC--Buckeye Hwy S27 | 1104.63 | | | | | | | | | | | | | | | | | | | | | | | |
| BSPI4 | Big Spirit Lake Spillway | 1398.54 | | | | | | | | | | | | | | | | | | | | | | | |
| BSQI4 | Gilbert 4WNW - IFC Ioway Creek at 160th | 930.91 | | | | | | | | | | | | | | | | | | | | | | | |
| BSSI4 | Cedar Creek 2 NW Bussey | 5.99 | | | | 6.48 | | 0 | | | | | | | | | | | | | | | | | |
| BSTI4 | Bassett - Beaver Creek | 1001.87 | | | | | | | | | | | | | | | | | | | | | | | |
| BTDI4 | West Main Drainage Ditch 1 & 2 1 ENE Britt | 75.54 | | | | | | | | | | | | | | | | | | | | | | | |
| BUCI4 | Littleton - Buck Creek | 929.97 | | | | | | | | | | | | | | | | | | | | | | | |
| CBSI4 | Beaver Slough AT Clinton 3rd St | 16.02 | | | | | | | | | | | | | | 49 | | | | | | | | | |
| CCDI4 | Catfish Creek SSW Dubuque-IFC-Catfish Creek - Manson Rd | 606.53 | | | | | | | | | | | | | | | | | | | | | | | |
| CCTI4 | Central City | 816.89 | | | | | | | | | | | | | | | | | | | | | | | |
| CCYI4 | Cedar River AT Charles City | 4.4 | | | | 0 | | 0 | | | | | | | | | | | | | | | | | |
| CDDI4 | Cedar Rapids - Dry Creek | 811.2 | | | | | | | | | | | | | | | | | | | | | | | |
| CDVI4 | Lovilia - Cedar Creek | 736.03 | | | | | | | | | | | | | | | | | | | | | | | |
| CDYI4 | Dry Run Creek 0 SE IFC--Cedar Falls Waterloo Rd | 847.59 | | | | | | | | | | | | | | | | | | | | | | | |
| CEBI4 | Cedar River AT Cedar Bluff | 13.98 | | | | 0 | | 0 | | | | | | | | | | | | | | | | | |
| CHDI4 | Charlotte - Deep Creek | 667.12 | | | | | | | | | | | | | | | | | | | | | | | |
| CHHI4 | Charlotte - Honey Creek | 668.48 | | | | | | | | | | | | | | | | | | | | | | | |
| CHII4 | Chillicothe - Des Moines River | 648.58 | | | | | | | | | | | | | | | | | | | | | | | |
| CIDI4 | Cedar Rapids - Cedar River No 2 | 10.56 | | | | | | | | | | | | | | | | | | | | | | | |
| CJTI4 | Iowa River AT Columbus Jct | 17.97 | | | | 2.05 | | 0 | | | | | | | | | | | | | | | | | |
| CLKI4 | Clear Lake 0 SW Clear Lake | | 4.9 | | | 19.49 | | 0 | | | | | | | | | | | | | | | | | |
| CLLI4 | Middle Raccoon River Tributary 2 SSW Carroll | 15.41 | | | | | | | | | | | | | | | | | | | | | | | |
| CLOI4 | Clive - Walnut Creek near NW 100th | 842.03 | | | | | | | | | | | | | | | | | | | | | | | |
| CLRI4 | Shell Rock River 1 WNW IFC--Clarksville Hwy C33 | 917.99 | | | | | | | | | | | | | | | | | | | | | | | |
| CLSI4 | Shell Rock River 5 NW IFC--Clarksville Hwy T47 | 929.73 | | | | | | | | | | | | | | | | | | | | | | | |
| NWS ID | Station | HGI | HPI | HTI | MVI | PCI | PPC | PPH | PPJ | QRI | QTI | RWH | TAH | TAI | TVI | TWI | UDH | UDI | UPJ | UPV | USH | USI | VBI | WTI | WVI |
| CMAI4 | Middle Raccoon River 0 NE IFC--Coon Rapids Hwy E63 | 1124.07 | | | | | | | | | | | | | | | | | | | | | | | |
| CMCI4 | Muddy Creek 2 NNE Coralville N | 3.66 | | | | 0 | | 0 | | | | | | | | | | | | | | | | | |
| CMMI4 | Mississippi River AT Camanche | 13.57 | | | | | | | | | | | | | | 53.6 | | | | | | | | | |
| CMOI4 | Middle Raccoon River 2 ESE IFC--Carroll Olympic Ave | 1196.55 | | | | | | | | | | | | | | | | | | | | | | | |
| CMTI4 | TURKEY RIVER AT Clermont | 818.49 | | | | | | | | | | | | | | | | | | | | | | | |
| CNEI4 | Cedar River 3 NE Conesville | 13.48 | | | | 0.51 | | 0 | | | | | | | | | | | | | | | | | |
| CNOI4 | East Nodaway River 3 ESE Clarinda Hwy 2 | 966.7 | | | | | | | | | | | | | | | | | | | | | | | |
| COFI4 | Masonville 2NE - Coffins Creek | 967.16 | | | | | | | | | | | | | | | | | | | | | | | |
| CONI4 | Conrad - Little Asher Creek | 946.78 | | | | | | | | | | | | | | | | | | | | | | | |
| CPBI4 | Center Point - Blue Creek | 763.08 | | | | | | | | | | | | | | | | | | | | | | | |
| CRAI4 | Clear Creek 2 W Coralville SW | 3.05 | | | | 3.18 | | 0 | | | | | | | | | | | | | | | | | |
| CREI4 | Cedar Rapids - Cedar River at Edgewood Rd | 7.89 | | | | | | | | | | | | | | | | | | | | | 12.18 | | |
| CRGI4 | Cedar Rapids - Indian Creek near Cottage Grove | 732.19 | | | | | | | | | | | | | | | | | | | | | | | |
| CRMI4 | Cedar Rapids - Indian Creek near Mount Vernon | 700.64 | | | | | | | | | | | | | | | | | | | | | | | |
| CROI4 | Orchard | 1024.08 | | | | | | | | | | | | | | | | | | | | | | | |
| CRRI4 | Little Sioux River 1 W Correctionville | 7.68 | | | | 28.61 | | 0 | | | | | | | | | | | | | | | | | |
| CRVI4 | Iowa River AT Coralville Dam | | 683.66 | | | 65.31 | | 0 | | | | | | 44.27 | | | | 323 | 12.08 | | | 8.61 | | | |
| CRWI4 | Crow Creek 3 NE Bettendorf Valley Rd | 4.28 | | | | | | | | | | | | | | | | | | | | | | | |
| CSCI4 | Cascade - NF Maquoketa River | 808.3 | | | | | | | | | | | | | | | | | | | | | | | |
| CSLI4 | North River 1 NNE IFC--Carlisle N 1st St | 769.33 | | | | | | | | | | | | | | | | | | | | | | | |
| CSRI4 | Ames 4NW - Ioway Creek Cameron School Rd | 3.71 | | | | | | | 0 | | | | | | | | | | | | | | | | |
| CTWI4 | Iowa River AT Coralville Res Tail | | | 54.24 | | | | | | | | | | | | | | | | | | | | | |
| CWAI4 | Walnut Creek 4 W IFC--Clive NW 128th St | 865.89 | | | | | | | | | | | | | | | | | | | | | | | |
| CWCI4 | Cornell 2NW - Willow Creek | 83.08 | | | | | | | | | | | | | | | | | | | | | | | |
| DAKI4 | East Fork Des Moines River 0 ENE Dakota City | 11.2 | | | | 15.17 | | 0 | | | | | | | | | | | | | | | | | |
| NWS ID | Station | HGI | HPI | HTI | MVI | PCI | PPC | PPH | PPJ | QRI | QTI | RWH | TAH | TAI | TVI | TWI | UDH | UDI | UPJ | UPV | USH | USI | VBI | WTI | WVI |
| DAWI4 | North Raccoon River 1 N IFC--Dawson Hwy P46 | 935.69 | | | | | | | | | | | | | | | | | | | | | | | |
| DBCI4 | Dyersville 1W - Bear Creek | 929.37 | | | | | | | | | | | | | | | | | | | | | | | |
| DBFI4 | Dubuque - N Fork Catfish | 690.48 | | | | | | | | | | | | | | | | | | | | | | | |
| DBGI4 | Dubuque - Granger Creek at Dubuque | 606.06 | | | | | | | | | | | | | | | | | | | | | | | |
| DCHI4 | Upper Iowa River 4 S Dorchester Hwy 76 | 8.95 | | | | 7.75 | | 0 | | | | | | | | | | | | | | | | | |
| DCLI4 | Colo - Dye Creek | 1021.74 | | | | | | | | | | | | | | | | | | | | | | | |
| DEDI4 | Brushy Creek 3 SE IFC--Dedham IA 141 | 1189.17 | | | | | | | | | | | | | | | | | | | | | | | |
| DEPI4 | Deep River 1 NE Deep River | 68.87 | | | | | | | | | | | | | | | | | | | | | | | |
| DEQI4 | Delhi - Maquoketa River | 840.38 | | | | | | | | | | | | | | | | | | | | | | | |
| DESI4 | Des Moines River 2 S Des Moines SE 6th St | 20.06 | | | | 4.6 | | 0 | | | | | | | | | | | | | | | 11.56 | | |
| DHCI4 | Dyersville 1NE - Hewitt Creek | 932.42 | | | | | | | | | | | | | | | | | | | | | | | |
| DKEI4 | Duck Creek SSW Davenport-IFC-Duck Creek - Eastern Ave | 617.86 | | | | | | | | | | | | | | | | | | | | | | | |
| DKTI4 | Dunkerton - Wapsipinicon River | 928.49 | | | | | | | | | | | | | | | | | | | | | | | |
| DLDI4 | Mississippi River AT Dubuque LD11 | | 14.89 | 10.61 | | 0.38 | | 0 | | | | | | 44.25 | | 47.4 | | 331 | | 22.76 | | 18.27 | 13.76 | | |
| DLLI4 | White Breast Creek 3 WNW Melcher-Dallas | 8.57 | | | | 7.26 | | 0 | | | | | | | | | | | | | | | | | |
| DMOI4 | Des Moines River 1 NW Des Moines 2nd Ave | 18.12 | | | | 3.2 | | 0 | | | | | | | | 32 | | | | | | | 12.49 | | |
| DMWI4 | Raccoon River 6 WSW Des Moines IA 28 | 26.55 | | | | 0 | | | | | | | | | | | | | | | | | 12.18 | | |
| DNKI4 | Dunkerton 1WNW - Crane Creek | 944.01 | | | | | | | | | | | | | | | | | | | | | | | |
| DNLI4 | Boyer River 4 SW Dunlap | 1059.05 | | | | | | | | | | | | | | | | | | | | | | | |
| DSKI4 | Denison - Boyer River at K Ave | 1155.17 | | | | | | | | | | | | | | | | | | | | | | | |
| DSOI4 | Soap Creek 5 NW IFC--Drakesville Falcon Blvd | 707.3 | | | | | | | | | | | | | | | | | | | | | | | |
| DUDI4 | Dundee - Maquoketa River | 967.74 | | | | | | | | | | | | | | | | | | | | | | | |
| DUMI4 | Hargrave Creek 3 W IFC--Dumont Franklin Ave | 984.87 | | | | | | | | | | | | | | | | | | | | | | | |
| DVSI4 | Thompson River 0 ENE Davis City | 2.58 | | | | 4.93 | | 0 | | | | | | | | | | | | | | | | | |
| DWCI4 | WATERLOO CREEK 1 S Dorchester | 6.85 | | | | | | | | | | | | | | | | | | | | | | | |
| NWS ID | Station | HGI | HPI | HTI | MVI | PCI | PPC | PPH | PPJ | QRI | QTI | RWH | TAH | TAI | TVI | TWI | UDH | UDI | UPJ | UPV | USH | USI | VBI | WTI | WVI |
| DYSI4 | Wolf Creek 6 N Dysart | 3.91 | | | | | | | | | | | | | | | | | | | | | | | |
| DYVI4 | Dyersville - NF Maquoketa River | 922.15 | | | | | | | | | | | | | | | | | | | | | | | |
| EAVI4 | Avoca - EB West Nishnabotna | 1119.95 | | | | | | | | | | | | | | | | | | | | | | | |
| EBRI4 | Salt Creek 3 S Elberon | 8.36 | | | | | | | | 0.389 | | | | | | | | | | | | | | | |
| ECLI4 | Lawton - Elliot Creek | 72.38 | | | | | | | | | | | | | | | | | | | | | | | |
| EDBI4 | Beaver Creek 2 W IFC--Eldora IA 175 | 968.9 | | | | | | | | | | | | | | | | | | | | | | | |
| EDYI4 | Des Moines River 0 S Eddyville | 57.8 | | | | | 0.01 | | | | | | | | | | | | | | | | | | |
| EFDI4 | South Raccoon River 3 SW IFC--Redfield Dexfield Rd | 921.41 | | | | | | | | | | | | | | | | | | | | | | | |
| EFWI4 | Jefferson | 7.61 | | | | 24.91 | | 0 | | | | | | | | | | | | | | | | | |
| EGNI4 | Elgin | 793.56 | | | | | | | | | | | | | | | | | | | | | | | |
| EISI4 | Riverton - East Nishnabotna River L68 | 918.85 | | | | | | | | | | | | | | | | | | | | | | | |
| ELHI4 | Ely - Hoosier Creek | 713.81 | | | | | | | | | | | | | | | | | | | | | | | |
| ELTI4 | East Nishnabotna River 1 WSW Elliott Hwy 48 | 1051.57 | | | | | | | | | | | | | | | | | | | | | | | |
| EMEI4 | Indian Creek AT Emerson Morton Ave | 1039.74 | | | | | | | | | | | | | | | | | | | | | | | |
| EMNI4 | Indian Creek 3 NE Emerson | 1059.21 | | | | | | | | | | | | | | | | | | | | | | | |
| EMTI4 | West Fork Des Moines River 1 NW Emmetsburg | 2.68 | | | | 2.67 | | 0 | | | | | | | | | | | | | | | 12.49 | | |
| EOKI4 | Mississippi River AT Keokuk LD19 | | 18.28 | 12.26 | | 0 | | 0 | | | | | | 49.48 | | 52 | | 151 | | 10.49 | | 5.89 | 13.78 | | |
| EQUI4 | Little Soap Creek 2 N IFC--Floris Quail Ave | 645.85 | | | | | | | | | | | | | | | | | | | | | | | |
| ERCI4 | Roberts Creek 2 NE Elkader 2NE | 749.37 | | | | | | | | | | | | | | | | | | | | | | | |
| ESQI4 | Ames - Ioway Creek | 3.78 | | | | | | | 0 | | | | | | | | | | | | | | | | |
| FAXI4 | Fairfax - Prairie Creek | 740.47 | | | | | | | | | | | | | | | | | | | | | | | |
| FDDI4 | Des Moines River 4 NW IFC--Fort Dodge Hwy D14 | 993.8 | | | | | | | | | | | | | | | | | | | | | | | |
| FERI4 | Winnebago River 0 S IFC--Fertile S 1st St | 1152.96 | | | | | | | | | | | | | | | | | | | | | | | |
| FLCI4 | Chequest Creek 5 SSW IFC--Selma Wheat Ave | 670.09 | | | | | | | | | | | | | | | | | | | | | | | |
| FLMI4 | Le Mars | 1191.24 | | | | | | | | | | | | | | | | | | | | | | | |
| NWS ID | Station | HGI | HPI | HTI | MVI | PCI | PPC | PPH | PPJ | QRI | QTI | RWH | TAH | TAI | TVI | TWI | UDH | UDI | UPJ | UPV | USH | USI | VBI | WTI | WVI |
| FLNI4 | North Fork Maquoketa River 3 WNW Fulton | 3.77 | | | | | | | | | | | | | | | | | | | | | | | |
| FLSI4 | Soap Creek 1 N IFC--Floris Quail Ave | 634.57 | | | | | | | | | | | | | | | | | | | | | | | |
| FLZI4 | Lizard Creek 5 WNW Fort Dodge | 6.02 | | | | | | | | | | | | | | | | | | | | | | | |
| FODI4 | Des Moines River 2 WNW Fort Dodge | 5.96 | | | | 0 | | 0 | | | | | | | | | | | | | | | | | |
| FORI4 | Winnebago River 2 SSE IFC--Forest City Hwy B14 | 1194.32 | | | | | | | | | | | | | | | | | | | | | | | |
| FRAI4 | Des Moines River 0 SSW IFC--Fraser Kale Rd | 886.7 | | | | | | | | | | | | | | | | | | | | | | | |
| FRDI4 | Frederika - EF Wapsipinicon River | 1011.98 | | | | | | | | | | | | | | | | | | | | | | | |
| FREI4 | Freeport - Upper Iowa River | 829.75 | | | | | | | | | | | | | | | | | | | | | | | |
| FRSI4 | Maurice - Struble | 1243.8 | | | | | | | | | | | | | | | | | | | | | | | |
| FSTI4 | Brockcamp Creek AT Festina | 989.98 | | | | | | | | | | | | | | | | | | | | | | | |
| FTAI4 | Rogers Creek AT Fort Atkinson | 1008.18 | | | | | | | | | | | | | | | | | | | | | | | |
| FTKI4 | Fort Atkinson - Turkey River | 1001.02 | | | | | | | | | | | | | | | | | | | | | | | |
| GENI4 | Muscatine - Geneva Creek | 588.24 | | | | | | | | | | | | | | | | | | | | | | | |
| GJTI4 | Buttrick Creek 3 WSW Grand Junction | 8.19 | | | | 8.63 | | 0 | | | | | | | | | | | | | | | 10.62 | | |
| GLBI4 | Gilbert - Montgomery Creek | 966.19 | | | | | | | | | | | | | | | | | | | | | | | |
| GLDI4 | Boone River 2 WSW Goldfield | 11.42 | | | | 37.41 | | 0 | | | | | | | | | | | | | | | | | |
| GMDI4 | Garrison - Mud Creek | 848.03 | | | | | | | | | | | | | | | | | | | | | | | |
| GMUI4 | Garrison - Mud Creek | 912.35 | | | | | | | | | | | | | | | | | | | | | | | |
| GNEI4 | Green - Shell Rock River | 949.91 | | | | | | | | | | | | | | | | | | | | | | | |
| GOLI4 | Goldfield - Boone River | 1079.76 | | | | | | | | | | | | | | | | | | | | | | | |
| GPKI4 | Alpha - Gouldsburg County Park | 986.87 | | | | | | | | | | | | | | | | | | | | | | | |
| GRBI4 | Turkey River AT Garber | 10.27 | | | | 0 | | | | | | | | | | 50.1 | | | | | | | | 5 | |
| GRMI4 | Beaver Creek 3 E Grimes | 7.64 | | | | 0 | | 0 | | | | | | | | | | | | | | | | | |
| GTTI4 | Mississippi River AT Guttenberg Dam 10 | | 611.64 | 11.19 | | | | | | | | | | | | | | | | | | | 14.06 | | |
| HAVI4 | Richland Creek 1 NNE Haven | 14.48 | | | | 65.03 | | 0 | | 0.365 | | | | | | | | | | | | | 12.81 | | |
| NWS ID | Station | HGI | HPI | HTI | MVI | PCI | PPC | PPH | PPJ | QRI | QTI | RWH | TAH | TAI | TVI | TWI | UDH | UDI | UPJ | UPV | USH | USI | VBI | WTI | WVI |
| HBTI4 | West Fork Des Moines River 0 WSW Humboldt | 5.39 | | | | 3.62 | | 0 | | | | | | | | | | | | | | | | | |
| HILI4 | Hills - Iowa River | 621.58 | | | | | | | | | | | | | | | | | | | | | | | |
| HMBI4 | Nishnabotna River 1 E Hamburg | 10.79 | | | | 38.46 | | 0 | | | | | | | | | | | | | | | | | |
| HMCI4 | Homestead - Clear Creek | 757.17 | | | | | | | | | | | | | | | | | | | | | | | |
| HMSI4 | Homestead - Clear Creek | 748.49 | | | | | | | | | | | | | | | | | | | | | | | |
| HMTI4 | Homestead - Clear Creek Trib | 740.3 | | | | | | | | | | | | | | | | | | | | | | | |
| HNKI4 | West Nishnabotna River AT Hancock | 3.66 | | | | 0.35 | | 0 | | | | | | | | | | | | | | | | | |
| HOUI4 | Houghton - Sugar Creek | 631.87 | | | | | | | | | | | | | | | | | | | | | | | |
| HRTI4 | Walnut Creek 4 NNW Hartwick | 5.95 | | | | | | | | 0.509 | | | | | | | | | | | | | | | |
| HTCI4 | Tipton Creek 5 NNW IFC--Hubbard 230th St | 1085.06 | | | | | | | | | | | | | | | | | | | | | | | |
| HTII4 | Tipton Creek 4 E IFC--Hubbard N Ave | 1011.17 | | | | | | | | | | | | | | | | | | | | | | | |
| HWNI4 | West Nishnabotna River 1 NW Henderson Hwy H12 | 1017.79 | | | | | | | | | | | | | | | | | | | | | | | |
| HWOI4 | Hiawatha - Otter Creek | 743.41 | | | | | | | | | | | | | | | | | | | | | | | |
| ICBI4 | Council Bluffs - Indian Creek | 1041.64 | | | | | | | | | | | | | | | | | | | | | | | |
| ICDI4 | Iowa City - Deer Creek | 677.96 | | | | | | | | | | | | | | | | | | | | | | | |
| ICLI4 | Nodaway River 1 E Clarinda | 11.66 | | | | 7.43 | | 0 | | | | | | 38.89 | | | | | | | | | | | |
| ICRI4 | Iowa City - Ralston Creek | 652.9 | | | | | | | | | | | | | | | | | | | | | | | |
| ICWI4 | Iowa City - Willow Creek | 662.1 | | | | | | | | | | | | | | | | | | | | | | | |
| IDNI4 | Middle River 5 NNW Indianola | 12.87 | | | | 2.47 | | 0.04 | | | | | | | | | | | | | | | | | |
| IFAI4 | Iowa Falls - Iowa River | 1064.4 | | | | | | | | | | | | | | | | | | | | | | | |
| IOCI4 | Old Mans Creek 5 SW Iowa City SW | 4.53 | | | | | | | | | | | | | | | | | | | | | | | |
| IOWI4 | Iowa City - Iowa River | 17.01 | | | | 0 | | 0 | | | | | | | | | | | | | | | | | |
| IRCI4 | Rapid Creek 4 NE Iowa City NE | 5.31 | | | | 78.01 | | 0 | | | | | | | | | | | | | | | 12.91 | | |
| IWNI4 | West Nishnabotna River 0 ENE Irwin Cora St | 1236.67 | | | | | | | | | | | | | | | | | | | | | | | |
| JCOI4 | Jerico -Crane Creek | 1142.73 | | | | | | | | | | | | | | | | | | | | | | | |
| NWS ID | Station | HGI | HPI | HTI | MVI | PCI | PPC | PPH | PPJ | QRI | QTI | RWH | TAH | TAI | TVI | TWI | UDH | UDI | UPJ | UPV | USH | USI | VBI | WTI | WVI |
| JEWI4 | Mud Lake Drainage Ditch 71 1 N Jewell | 82.07 | | | | | | | | | | | | | | | | | | | | | | | |
| JMEI4 | Floyd River 1 NE James | 9.19 | | | | 56.09 | | 0 | | | | | | | | | | | | | | | | | |
| KALI4 | English River 1 SSW Kalona | 6.53 | | | | | | | | | | | | | | | | | | | | | | | |
| KCQI4 | Keosauqua - Chequest Creek | 621.03 | | | | | | | | | | | | | | | | | | | | | | | |
| KECI4 | English Creek 4 ESE Knoxville | 9.89 | | | | 3.73 | | 0 | | | | | | | | | | | | | | | | | |
| KEQI4 | Des Moines River AT Keosauqua | 17.08 | | | | | | | | | | | | | | | | | | | | | | | |
| KESI4 | Kesley - EF Cedar River | 947.78 | | | | | | | | | | | | | | | | | | | | | | | |
| KITI4 | Langworthy - Kitty Creek | 853.48 | | | | | | | | | | | | | | | | | | | | | | | |
| KLGI4 | North Skunk River 3 SE IFC--Kellogg S 12th Ave E | 813.71 | | | | | | | | | | | | | | | | | | | | | | | |
| KRSI4 | Kinross - South English | 689.67 | | | | | | | | | | | | | | | | | | | | | | | |
| LADI4 | Big Bear Creek AT Ladora | 14.99 | | | | 0 | | 0 | | | | | | | | | | | | | | | 12.6 | | |
| LAKI4 | Lake Creek 3 W IFC--Lake City IA 175 | 1104.64 | | | | | | | | | | | | | | | | | | | | | | | |
| LAPI4 | Wolf Creek 0 WNW IFC--La Porte City W Main St | 806.75 | | | | | | | | | | | | | | | | | | | | | | | |
| LARI4 | Larrabee - Mill Creek | 1232.75 | | | | | | | | | | | | | | | | | | | | | | | |
| LCOI4 | Little Cedar River 5 E Orchard 5E | 1075.24 | | | | | | | | | | | | | | | | | | | | | | | |
| LCYI4 | Lacey - Middle Creek | 77.94 | | | | | | | | | | | | | | | | | | | | | | | |
| LECI4 | Mississippi River AT Le Claire LD14 | | 15.16 | 8.04 | | 1.12 | | 0 | | | | | | 46.07 | | 51 | | 0 | | 10.39 | | 5.56 | 12.86 | | |
| LELI4 | Winnebago River 0 NNE IFC--Leland Hwy A38 | 1210.41 | | | | | | | | | | | | | | | | | | | | | | | |
| LFSI4 | Sanborn 4W - Little Floyd River | 83.06 | | | | | | | | | | | | | | | | | | | | | | | |
| LGNI4 | Boyer River AT Logan | 5.17 | | | | 27.26 | | 0 | | | | | | | | | | | | | | | | | |
| LKCI4 | North Raccoon River 2 WSW Lanesboro | 11.03 | | | | 70.56 | | 0 | | | | | | | | | | | | | | | | | |
| LMCI4 | Lester - Mud Creek | 1365.91 | | | | | | | | | | | | | | | | | | | | | | | |
| LNNI4 | Little Sioux River AT Linn Grove | 17.04 | | | | 80.12 | | 0 | | | | | | | | | | | | | | | | | |
| LNSI4 | Mississippi River AT Lansing | 9.28 | 621.54 | | | | | | | | | | | | | | | | | | | | | | |
| LNTI4 | Iowa River 5 SW Lone Tree | -1310.72 | | | | 0.18 | | 0.01 | | | | | | | | | | | | | | | | | |
| NWS ID | Station | HGI | HPI | HTI | MVI | PCI | PPC | PPH | PPJ | QRI | QTI | RWH | TAH | TAI | TVI | TWI | UDH | UDI | UPJ | UPV | USH | USI | VBI | WTI | WVI |
| LPRI4 | West Fork Little Sioux River 3 SE Lake Park | 1391.85 | | | | | | | | | | | | | | | | | | | | | | | |
| LRGI4 | Little Rock River - George Ibex | 1302.19 | | | | | | | | | | | | | | | | | | | | | | | |
| LRHI4 | Troublesome Creek 4 E IFC--Lorah Troublesome Creek Rd | 1187.28 | | | | | | | | | | | | | | | | | | | | | | | |
| LSCI4 | Cherokee | 1160.05 | | | | | | | | | | | | | | | | | | | | | | | |
| LSMI4 | Milford | 1365.13 | | | | | | | | | | | | | | | | | | | | | | | |
| LSSI4 | Spencer 4 NW | | | | | 9.89 | | 0 | | | | | | | | | | | | | | | | | |
| LTNI4 | Littleton - Little Wapsipinicon River | 928.35 | | | | | | | | | | | | | | | | | | | | | | | |
| MAAI4 | Massena - West Nodaway River | 68.77 | | | | | | | | | | | | | | | | | | | | | | | |
| MACI4 | Marion - Indian Creek | 812.95 | | | | | | | | | | | | | | | | | | | | | | | |
| MAPI4 | Maple River AT Mapleton | 5.94 | | | | 61.79 | | 0 | | | | | | | | | | | | | | | | | |
| MAQI4 | Maquoketa River 2 NE Maquoketa | 12.91 | | | | | | | | | | | | | | | | | | | | | 12.63 | | |
| MAYI4 | May City | 1421.71 | | | | | | | | | | | | | | | | | | | | | | | |
| MBNI4 | North Raccoon River 2 WSW IFC--Minburn Minburn Rd | 899.99 | | | | | | | | | | | | | | | | | | | | | | | |
| MBRI4 | Marquette | 4.1 | | | | 56.18 | | 0 | | | | | | | | | | | | | | | | | |
| MCBI4 | Mosquito Creek 4 ENE Council Bluffs | 992.56 | | | | | | | | | | | | | | | | | | | | | | | |
| MCCI4 | Cheslea Creek 2 SW IFC--Mason City 19th St SW | 1136.65 | | | | | | | | | | | | | | | | | | | | | | | |
| MCHI4 | Maquoketa River AT Manchester Hwy 20 | 5.34 | | | | 66.73 | | 0 | | | | | | | | | | | | | | | 12.86 | | |
| MCII4 | Winnebago River 2 E IFC--Mason City S Illinois Ave | 1063.35 | | | | | | | | | | | | | | | | | | | | | | | |
| MCKI4 | Winnebago River 7 NW IFC--Mason City Killdeer Ave | 1111.22 | | | | | | | | | | | | | | | | | | | | | | | |
| MCRI4 | Winnebago River 5 ESE IFC--Mason City Hwy S56 | 1044.31 | | | | | | | | | | | | | | | | | | | | | | | |
| MCWI4 | Winnebago River 1 NNE Mason City | 6.46 | | | | 10 | | 0 | | | | | | | | | | | | | | | | | |
| MDCI4 | Muscatine - Mad Creek No2 | 617.38 | | | | | | | | | | | | | | | | | | | | | | | |
| MELI4 | Merrill County - Floyd River | 1154.27 | | | | | | | | | | | | | | | | | | | | | | | |
| MERI4 | Merrimac | 585.86 | | | | | | | | | | | | | | | | | | | | | | | |
| MGOI4 | Indian Creek 3 NNW Mingo | 6.64 | | | | 25.17 | | 0 | | | | | | | | | | | | | | | 12.18 | | |
| NWS ID | Station | HGI | HPI | HTI | MVI | PCI | PPC | PPH | PPJ | QRI | QTI | RWH | TAH | TAI | TVI | TWI | UDH | UDI | UPJ | UPV | USH | USI | VBI | WTI | WVI |
| MHYI4 | Manchester 3NNE - Honey Creek | 945.75 | | | | | | | | | | | | | | | | | | | | | | | |
| MIWI4 | Iowa River 1 N Marshalltown | 14.87 | | | | 0 | | 0 | | 4.13 | | | | | | | | | | | | | | | |
| MKCI4 | Keg Creek 1 WSW Mineola Hwy H12 | 999.12 | | | | | | | | | | | | | | | | | | | | | | | |
| MLSI4 | Little Sioux River 2 NW Montgomery | 1386.71 | | | | | | | | | | | | | | | | | | | | | | | |
| MNEI4 | Mosquito Creek 1 NNE Neola | 1078.48 | | | | | | | | | | | | | | | | | | | | | | | |
| MNTI4 | Monticello - Maquoketa Creek | 796.73 | | | | | | | | | | | | | | | | | | | | | | | |
| MPZI4 | MOUNT PLEASANT 1 SSW [CCOOP] | | | | | 13.39 | | | | | | | | 72.9 | | | | | | | | | 12.7 | | |
| MRBI4 | Shell Rock River 2 SSE IFC--Marble Rock 290th St | 950.38 | | | | | | | | | | | | | | | | | | | | | | | |
| MRGI4 | Maple River AT Galva | 1253.36 | | | | | | | | | | | | | | | | | | | | | | | |
| MROI4 | Iowa River AT Marengo | 15.43 | | | | 0 | | 0 | | | | | | | | | | | | | | | | | |
| MSPI4 | Willow Creek 1 W IFC--Mason City N Pierce Ave | 1111.37 | | | | | | | | | | | | | | | | | | | | | | | |
| MSVI4 | Boyer River 2 ENE Missouri Valley | 1001.21 | | | | | | | | | | | | | | | | | | | | | | | |
| MSWI4 | Willow Creek 0 WSW IFC--Mason City 1st St SW | 1102.25 | | | | | | | | | | | | | | | | | | | | | | | |
| MTCI4 | Camp Creek 5 S IFC--Mitchellville IA 163 | 813.84 | | | | | | | | | | | | | | | | | | | | | | | |
| MTWI4 | Timber Creek 4 SE Marshalltown | 6.1 | | | | 17.06 | | 0 | | 0.388 | | | | | | | | | | | | | | | |
| MUDI4 | Mud Creek 5 WSW Henderson | 1026.66 | | | | | | | | | | | | | | | | | | | | | | | |
| MUSI4 | Mississippi River AT Muscatine | 13.19 | | | | 665 | | 0 | | | | | | | | | | | | | | | | | |
| MUTI4 | Muscatine - Mad Creek | 570.66 | | | | | | | | | | | | | | | | | | | | | | | |
| MUVI4 | Vinton - Mud Creek | 819.99 | | | | | | | | | | | | | | | | | | | | | | | |
| MXII4 | East Indian Creek 4 N IFC--Maxwell Hwy S27 | 887.6 | | | | | | | | | | | | | | | | | | | | | | | |
| NEPI4 | English River 4 S Parnell | 16.94 | | | | 2.97 | | 0 | | | | | | | | | | | | | | | 12.73 | | |
| NHRI4 | Beaver Creek 0 NNE New Hartford | 6.04 | | | | 82.69 | | 0 | | 0.927 | | | | | | | | | | | | | | | |
| NRSI4 | Shell Rock River 2 NW IFC--Nora Springs 277th St | 1054.66 | | | | | | | | | | | | | | | | | | | | | | | |
| NRWI4 | North River 2 SE Norwalk | 12.6 | | | | | | | | | | | | | | | | | | | | | | | |
| NUAI4 | Little Cedar River AT Nashua | 949.27 | | | | | | | | | | | | | | | | | | | | | | | |
| NWS ID | Station | HGI | HPI | HTI | MVI | PCI | PPC | PPH | PPJ | QRI | QTI | RWH | TAH | TAI | TVI | TWI | UDH | UDI | UPJ | UPV | USH | USI | VBI | WTI | WVI |
| NWSI4 | North Washington 1SSE - Little Wapsi | 1090.49 | | | | | | | | | | | | | | | | | | | | | | | |
| NWVI4 | New Vienna - NF Maquoketa River | 982.83 | | | | | | | | | | | | | | | | | | | | | | | |
| OAMI4 | Oakland Mills - Skunk River | 564.56 | | | | | | | | | | | | | | | | | | | | | | | |
| OKVI4 | Iowa River AT Oakville | 9.91 | | | | | | | | | | | | | | | | | | | | | | | |
| OLII4 | Olin 1N - Wapsipinicon River | 744.63 | | | | | | | | | | | | | | | | | | | | | | | |
| ORNI4 | Oran - Little Wapsi | 83.3 | | | | | | | | | | | | | | | | | | | | | | | |
| OSCI4 | Slough Creek 3 SE Orchard 3SE | 1096.18 | | | | | | | | | | | | | | | | | | | | | | | |
| OSGI4 | Osage 2 W | 1067.48 | | | | | | | | | | | | | | | | | | | | | | | |
| OSPI4 | Osage - Spring Creek Hwy 9 | 1136.13 | | | | | | | | | | | | | | | | | | | | | | | |
| OSRI4 | Rock Creek 6 W Osage 6W | 1137.77 | | | | | | | | | | | | | | | | | | | | | | | |
| OTMI4 | Des Moines River 1 S Ottumwa | 8.58 | | | | | | | | | | | | | | 48.8 | | | | | | | | | |
| OTRI4 | Cedar River 3 N Otranto | 1132.41 | | | | | | | | | | | | | | | | | | | | | | | |
| OTUI4 | Osterdock - Turkey River | 627.66 | | | | | | | | | | | | | | | | | | | | | | | |
| OTVI4 | Otterville - Otter Creek | 907.29 | | | | | | | | | | | | | | | | | | | | | | | |
| OWBI4 | Beaver Creek 2 NNW IFC--Owasa 170th St | 1082.28 | | | | | | | | | | | | | | | | | | | | | | | |
| OWSI4 | South Beaver Creek 3 WSW IFC--Owasa US 65 | 1088.14 | | | | | | | | | | | | | | | | | | | | | | | |
| OXCI4 | Oxford - Clear Creek | 714.01 | | | | | | | | | | | | | | | | | | | | | | | |
| OXDI4 | Clear Creek SSW Oxford-IFC-Clear Creek - Eagle Ave | 700.75 | | | | | | | | | | | | | | | | | | | | | | | |
| OXRI4 | Oxford - Rhine Creek | 730.32 | | | | | | | | | | | | | | | | | | | | | | | |
| OYEI4 | Owens County - Willow Creek | 1254.25 | | | | | | | | | | | | | | | | | | | | | | | |
| PABI4 | Palo - Bear Creek | 739.75 | | | | | | | | | | | | | | | | | | | | | | | |
| PADI4 | Palo - Dry Creek | 738.74 | | | | | | | | | | | | | | | | | | | | | | | |
| PANI4 | Middle Raccoon River 1 SW Panora | 5.85 | | | | 45.94 | | 0 | | | | | | | | -183.4 | | | | | | | 12.18 | | |
| PARI4 | Beaver Creek 3 E IFC--Parkersburg Hwy T47 | 912.29 | | | | | | | | | | | | | | | | | | | | | | | |
| PCHI4 | Perry Creek 4 W Hinton | 15.32 | | | | 38.69 | | 0 | | | | | | | | | | | | | | | 11.56 | | |
| NWS ID | Station | HGI | HPI | HTI | MVI | PCI | PPC | PPH | PPJ | QRI | QTI | RWH | TAH | TAI | TVI | TWI | UDH | UDI | UPJ | UPV | USH | USI | VBI | WTI | WVI |
| PELI4 | Des Moines River 4 SW Red Rock Reservoir | | 741.72 | | | | | | | | | | | | | | | | | | | | 13.68 | | |
| PFLI4 | Cedar River 1 E IFC--Plainfield IA 188 | 926.17 | | | | | | | | | | | | | | | | | | | | | | | |
| PKFI4 | Packard 2ENE - Flood Creek | 941.45 | | | | | | | | | | | | | | | | | | | | | | | |
| PLEI4 | Spring Creek 4 ESE IFC--Pleasant Hill SE 32nd Ave | 781.11 | | | | | | | | | | | | | | | | | | | | | | | |
| PLHI4 | Fourmile Creek 1 S IFC--Pleasant Hill Vandalia Rd | 775.81 | | | | | | | | | | | | | | | | | | | | | | | |
| PLKI4 | Big Creek Lake 2 NNW Polk City | 20.32 | | | | 6.09 | | 0.05 | | | | | | | | | | | | | | | 11.24 | | |
| PLMI4 | Mud Creek 6 E IFC--Pleasant Hill IA 163 | 819.1 | | | | | | | | | | | | | | | | | | | | | | | |
| PLOI4 | Cedar River AT Palo Blairs Ferry Rd | 10.87 | | | | 0 | | 0 | | | | | | | | 48.1 | | | | | | | | | |
| PMDI4 | Bluff Creek 0 NW Pilot Mound | 81.71 | | | | | | | | | | | | | | | | | | | | | | | |
| PNBI4 | Burchfield Creek 4 NNW IFC--Panora Sage Trl | 1045.98 | | | | | | | | | | | | | | | | | | | | | | | |
| PNLI4 | Lake Panorama 1 WNW Panora | | 45.6 | | | | | | | | | | | | | | | | | | | | 13.12 | | |
| PRAI4 | Prairieburg 3 S | 834.47 | | | | | | | | | | | | | | | | | | | | | | | |
| PROI4 | North Raccoon River 1 W Perry | 9.8 | | | | 7.42 | | 0 | | | | | | | | | | | | | | | 11.56 | | |
| PSGI4 | Soldier River AT Pisgah | 3.37 | | | | 0 | | 0 | | | | | | 90.57 | | | | | | | | | 12.49 | | |
| QTNI4 | Quasqueton - Wapsipinicon River | 868 | | | | | | | | | | | | | | | | | | | | | | | |
| RABI4 | Chariton River 1 N Rathbun | 2.24 | | | | | | | | 0.0136 | | | | | | | | | | | | | | | |
| RAPI4 | Rock River AT Rock Rapids | 7.67 | | | | 26.17 | | 0 | | | | | | | | | | | | | | | | | |
| RBDI4 | Robins - Dry Creek | 845.54 | | | | | | | | | | | | | | | | | | | | | | | |
| RCOI4 | Rock Creek 2 WSW Orchard 2WSW | 1027.31 | | | | | | | | | | | | | | | | | | | | | | | |
| RDFI4 | Middle Raccoon River 0 W IFC--Redfield Hwy F59 | 911.9 | | | | | | | | | | | | | | | | | | | | | | | |
| RDOI4 | East Nishnabotna River AT Red Oak | 7.68 | | | | 27.87 | | 0 | | | | | | | | | | | | | | | | | |
| RDPI4 | West Nishnabotna River 1 W Randolph | 9.32 | | | | 26.92 | | 0 | | | | | | 36.97 | | 46.9 | | | | | | | | | |
| RIVI4 | Riverdale - Duck Creek | 564.72 | | | | | | | | | | | | | | | | | | | | | | | |
| RKFI4 | Rockford 3 SSE | 971.6 | | | | | | | | | | | | | | | | | | | | | | | |
| RKVI4 | Rock River AT Rock Valley | 5.22 | | | | | | | | | | | | | | | | | | | | | | | |
| NWS ID | Station | HGI | HPI | HTI | MVI | PCI | PPC | PPH | PPJ | QRI | QTI | RWH | TAH | TAI | TVI | TWI | UDH | UDI | UPJ | UPV | USH | USI | VBI | WTI | WVI |
| RLFI4 | Pilot Creek 3 E Rolfe | 3.68 | | | | 28.77 | | 0 | | | | | | | | | | | | | | | | | |
| RLLI4 | Roland - Long Dick Creek | 992.91 | | | | | | | | | | | | | | | | | | | | | | | |
| RNDI4 | Houghton - Volga River Hwy93 | 1084.48 | | | | | | | | | | | | | | | | | | | | | | | |
| RNSI4 | South Skunk River 2 SSE IFC--Randall Hwy R61 | 977.1 | | | | | | | | | | | | | | | | | | | | | | | |
| ROLI4 | Roland - Bear Creek | 956.02 | | | | | | | | | | | | | | | | | | | | | | | |
| ROWI4 | Iowa River 4 WNW Rowan | 6.83 | | | | 4.77 | | 0 | | 0.638 | | | | | | | | | | | | | | | |
| RRDI4 | Des Moines River 4 SW Pella | | | 692.68 | | | | | | | | | | | | 48.4 | | | | | | | | | |
| RRMI4 | Red Rock Dam | | | | | 6.68 | | 0 | | | | | | 40.1 | | | | 11 | 8.95 | | | 5.95 | 14 | | |
| RSRI4 | Rochester - Cedar River | 647.62 | | | | | | | | | | | | | | | | | | | | | | | |
| RSSI4 | South Skunk River 1 WSW IFC--Reasnor Hwy F62 | 751.37 | | | | | | | | | | | | | | | | | | | | | | | |
| SARI4 | North Raccoon River 3 NNW IFC--Sac City 230th St | 1194.9 | | | | | | | | | | | | | | | | | | | | | | | |
| SAYI4 | Des Moines River 4 WNW Saylorville Reservoir | | 836.99 | | | 31.57 | | 0 | | | | | | | | | | 357 | | | | 7.15 | 14.63 | | |
| SCRI4 | North Raccoon River 5 S Sac City | 9.13 | | | | 2.13 | | 0 | | | | | | | | | | | | | | | 11.87 | | |
| SDEI4 | Saude - Little Turkey River | 1119.37 | | | | | | | | | | | | | | | | | | | | | | | |
| SDTI4 | Des Moines River 2 W Saylorville | | | 10.34 | | | | | | | | | | | | | | | | | | | 12.49 | | |
| SFLI4 | Sheffield 11SE - WF Cedar River | 991.5 | | | | | | | | | | | | | | | | | | | | | | | |
| SFRI4 | Sheldon | 1367.84 | | | | | | | | | | | | | | | | | | | | | | | |
| SHAI4 | SHAGBARK HILLS SCAN | | | | 38 | | | | | | | 24.67 | 28 | 29.7 | 44 | | 344 | | | | 0.4 | 2.6 | | | |
| SILI4 | Silver Creek AT Silver City Dobney Ave | 1007.28 | | | | | | | | | | | | | | | | | | | | | | | |
| SIOI4 | Perry Creek AT Sioux City | 6.68 | | | | 26.64 | | 0 | | | | | | | | | | | | | | | | | |
| SLFI4 | Sutliff - Cedar River | 679.27 | | | | | | | | | | | | | | | | | | | | | | | |
| SLKI4 | Spirit Lake 2 NW Orleans | | 14.13 | | | 22.05 | | 0 | | | | | | | | | | | | | | | | | |
| SPGI4 | Spring Run Creek | 1398.61 | | | | | | | | | | | | | | | | | | | | | | | |
| SPII4 | Little Sioux River 3 NW Spencer / Highway 18 | 1317.5 | | | | | | | | | | | | | | | | | | | | | | | |
| SPNI4 | Spencer | 1301.41 | | | | | | | | | | | | | | | | | | | | | | | |
| NWS ID | Station | HGI | HPI | HTI | MVI | PCI | PPC | PPH | PPJ | QRI | QTI | RWH | TAH | TAI | TVI | TWI | UDH | UDI | UPJ | UPV | USH | USI | VBI | WTI | WVI |
| SPVI4 | Spillville - Turkey River | 1060.93 | | | | | | | | | | | | | | | | | | | | | | | |
| SRLI4 | Storm Lake at Storm Lake | | 14.14 | | | | | | | | | | | | | 7.2 | | | | | | | | | |
| STBI4 | Iowa River 0 WSW Steamboat Rock | 7.48 | | | | 0 | | 0 | | 2.22 | | | | | | | | | | | | | | | |
| STHI4 | Stanhope | | | | | | | | 0 | | | | | | | | | | | | | | | | |
| STRI4 | Des Moines River 4 WSW Stratford | 10.3 | | | | 14.85 | | 0 | | | | | | | | | | | | | | | | | |
| SWCI4 | Sutherland - Waterman Creek 470th | 1233.82 | | | | | | | | | | | | | | | | | | | | | | | |
| SWNI4 | Des Moines River 2 NE Swan | 51.69 | | | | 12.86 | | | | | | | | | | | | | | | | | | | |
| TAMI4 | Iowa River 1 S Tama US 63 | 14.96 | | | | 2.81 | | 0 | | | | | | | | | | | | | | | 12.73 | | |
| TARI4 | Raven Creek 5 W IFC--Tama Hwy E49 | 825.93 | | | | | | | | | | | | | | | | | | | | | | | |
| TCGI4 | Turkey River 3 SE Cresco | 1122.12 | | | | | | | | | | | | | | | | | | | | | | | |
| TENI4 | Turkey River 8 NW 10 Mile Bridge 8NW Elkader | 760.66 | | | | | | | | | | | | | | | | | | | | | | | |
| TFGI4 | Tiffin - Buffalo Creek | 703.07 | | | | | | | | | | | | | | | | | | | | | | | |
| TFII4 | Tiffin - Buffalo Creek - Ireland Ave | 729.69 | | | | | | | | | | | | | | | | | | | | | | | |
| TMAI4 | Iowa River 3 W Tama Hwy E49 | 9.78 | | | | 0 | | 0 | | 5 | | | | | | | | | | | | | | | |
| TMBI4 | Bennett Creek 4 WSW IFC--Tama G Ave | 827.95 | | | | | | | | | | | | | | | | | | | | | | | |
| TPTI4 | Brushy Fork Creek 4 ENE Templeton | 67.53 | | | | | | | | | | | | | | | | | | | | | | | |
| TRAI4 | Traer - Coon Creek | 882.79 | | | | | | | | | | | | | | | | | | | | | | | |
| TRCI4 | Des Moines River 1 ENE Tracy | 8.87 | | | | 0.32 | | 0 | | | | | | | | | | | | | | | | | |
| TRNI4 | Monona-Harrison Ditch 4 SSW Turin | 5.5 | | | | 50.05 | | 0 | | | | | | | | | | | | | | | 11.87 | | |
| TROI4 | South Chequest Creek 2 N IFC--Troy Yak Blvd | 664.83 | | | | | | | | | | | | | | | | | | | | | | | |
| TURI4 | Little Sioux River 4 SSE Turin | 10.04 | | | | 47.24 | | 0 | | | | | | | | | | | | | | | | | |
| UIDI4 | Upper Iowa River 3 NW Decorah 3NW | 887.88 | | | | | | | | | | | | | | | | | | | | | | | |
| ULDI4 | Delhi 4W - Upper Lake Delhi | 897 | | | | | | | | | | | | | | | | | | | | | | | |
| URBI4 | North Walnut Creek 1 SW IFC--Urbandale Hickman Rd | 835.36 | | | | | | | | | | | | | | | | | | | | | | | |
| USOI4 | Soap Creek 5 N IFC--Unionville 313th Ave | 770.1 | | | | | | | | | | | | | | | | | | | | | | | |
| NWS ID | Station | HGI | HPI | HTI | MVI | PCI | PPC | PPH | PPJ | QRI | QTI | RWH | TAH | TAI | TVI | TWI | UDH | UDI | UPJ | UPV | USH | USI | VBI | WTI | WVI |
| VANI4 | Raccoon River 0 NE IFC--Van Meter Hwy R16 | 850.5 | | | | | | | | | | | | | | | | | | | | | | | |
| VGAI4 | Volga River AT Volga | 778.23 | | | | | | | | | | | | | | | | | | | | | | | |
| VIMI4 | Vinton - Mud Creek | 772.7 | | | | | | | | | | | | | | | | | | | | | | | |
| VINI4 | Cedar River AT Vinton | 4.79 | | | | 3.5 | | 0 | | | | | | | | 48 | | | | | | | | | |
| VNMI4 | Raccoon River 0 ENE Van Meter | 9.34 | | | | 2.36 | | 0.02 | | | | | | | | -135.7 | | | | | | | 13.12 | | |
| WADI4 | Volga River AT Wadena | 847.61 | | | | | | | | | | | | | | | | | | | | | | | |
| WAEI4 | Elk Run Creek 5 E IFC--Waterloo Independence Ave | 847.26 | | | | | | | | | | | | | | | | | | | | | | | |
| WAPI4 | Iowa River AT Wapello | 19.93 | | | | 0 | | 0 | | | | | | | | | | | | | | | | | |
| WASI4 | Washburn - Miller Creek | 821.94 | | | | | | | | | | | | | | | | | | | | | | | |
| WAVI4 | Avoca 1W - West Nishnabotna River | 1115.11 | | | | | | | | | | | | | | | | | | | | | | | |
| WBCI4 | Boone River 3 SSE Webster City | 4.74 | | | | 12.13 | | 0 | | | | | | | | | | | | | | | | | |
| WBWI4 | West Branch - Wapsinonoc Creek | 3.48 | | | | | | | | | | | | | | | | | | | | | | | |
| WCRI4 | Walnut Creek SSW Olin-IFC-Walnut Creek - 35th St | 748.29 | | | | | | | | | | | | | | | | | | | | | | | |
| WCSI4 | Willow Creek 6 SE Soldier | 66.37 | | | | | | | | | | | | | | | | | | | | | | | |
| WCWI4 | Little Walnut Creek 6 WNW IFC--Clive 156th St | 898.77 | | | | | | | | | | | | | | | | | | | | | | | |
| WFCI4 | Washington 2SW - WF Crooked Crrek | 663.04 | | | | | | | | | | | | | | | | | | | | | | | |
| WFMI4 | West Fork Little Sioux River AT Moville | 1130.02 | | | | | | | | | | | | | | | | | | | | | | | |
| WISI4 | Riverton - West Nishnabotna J46 | 913.86 | | | | | | | | | | | | | | | | | | | | | | | |
| WLMI4 | Williamsburg - Clear Creek Trib | 771.81 | | | | | | | | | | | | | | | | | | | | | | | |
| WLRI4 | Walnut Creek 6 E IFC--Runnells Adkins St | 759.4 | | | | | | | | | | | | | | | | | | | | | | | |
| WLSI4 | Welsh Lake | 1396.6 | | | | | | | | | | | | | | | | | | | | | | | |
| WLTI4 | Welton - Silver Creek | 82.3 | | | | | | | | | | | | | | | | | | | | | | | |
| WNDI4 | North Walnut Creek 1 NW IFC--Windsor Heights College Dr | 826.68 | | | | | | | | | | | | | | | | | | | | | | | |
| WONI4 | Spillville - Wonder Creek | 1059.63 | | | | | | | | | | | | | | | | | | | | | | | |
| WUOI4 | West Union - Otter Creek | 1082.92 | | | | | | | | | | | | | | | | | | | | | | | |
| NWS ID | Station | HGI | HPI | HTI | MVI | PCI | PPC | PPH | PPJ | QRI | QTI | RWH | TAH | TAI | TVI | TWI | UDH | UDI | UPJ | UPV | USH | USI | VBI | WTI | WVI |
| WVLI4 | Cedar River 1 NNE Waverly | 2.22 | | | | 4.5 | | 0 | | | | | | | | 47.9 | | | | | | | | | 1.01 |
| WWDI4 | Beaver Creek 4 SSW Woodward | 14.74 | | | | 8.87 | | 0 | | | | | | | | | | | | | | | 11.24 | | |
| WYOI4 | Wyoming - Bear Creek | 794.83 | | | | | | | | | | | | | | | | | | | | | | | |