| 03086500 | Mahoning River at Alliance OH | 06/03 16:00 EDT | 18.6 | -- | -- | -- | -- | -- | -- | -- |
| 03090500 | Mahoning River bl Berlin Dam nr Berlin Center OH | 06/03 16:15 EDT | 16.2 | -- | -- | -- | -- | -- | -- | -- |
| 03091500 | Mahoning River at Pricetown OH | 06/03 16:00 EDT | 19.6 | -- | -- | -- | -- | -- | -- | -- |
| 03092090 | West Branch Mahoning River near Ravenna OH | 06/03 16:00 EDT | 18.4 | -- | -- | -- | -- | -- | -- | -- |
| 03092460 | West Branch Mahoning River at Wayland OH | 06/03 16:15 EDT | 15.0 | -- | -- | -- | -- | -- | -- | -- |
| 03094000 | Mahoning River at Leavittsburg OH | 06/03 16:15 EDT | 19.7 | -- | -- | -- | -- | -- | -- | -- |
| 03094704 | Mosquito Creek near Greene Center OH | 06/03 15:45 EDT | 19.9 | -- | -- | -- | -- | -- | -- | -- |
| 03095500 | Mosquito Creek bl Mosquito Ck Dam nr Cortland OH | 06/03 15:45 EDT | 20.3 | -- | -- | -- | -- | -- | -- | -- |
| 03098600 | Mahoning River below West Ave at Youngstown OH | 06/03 16:15 EDT | -- | 430 | 7.2 | 5.4 | -- | -- | -- | -- |
| | | 05/27 08:00 EDT | 21.4 | -- | -- | -- | -- | -- | -- | -- |
| | Instream | 06/03 16:15 EDT | 20.4 | -- | -- | -- | -- | -- | -- | -- |
| 03099500 | Mahoning River at Lowellville OH | 06/03 16:00 EDT | 20.6 | 459 | -- | 7.7 | -- | -- | -- | -- |
| 03102950 | Pymatuning Creek at Kinsman OH | 06/03 16:30 EDT | 18.5 | -- | -- | -- | -- | -- | -- | -- |
| 03119341 | McGuire Creek above Leesville Lake OH | 06/03 15:45 EDT | 21.8 | 262 | -- | -- | -- | -- | -- | -- |
| 03119971 | North Fork McGuire Creek near Carrollton OH | 06/03 15:45 EDT | 20.0 | 236 | -- | -- | -- | -- | -- | -- |
| 03119979 | Bear Hole Run near Carrollton OH | 06/03 16:15 EDT | 18.3 | 217 | -- | -- | -- | -- | -- | -- |
| 03120820 | Indian Fork at Dellroy OH | 06/03 15:45 EDT | 19.8 | 328 | -- | -- | -- | -- | -- | -- |
| 03120869 | Willow Run near Dellroy OH | 06/03 15:45 EDT | 20.2 | 247 | -- | -- | -- | -- | -- | -- |
| 03120961 | Unnamed Tributary near Dellroy OH | 06/03 15:45 EDT | 19.6 | 338 | -- | -- | -- | -- | -- | -- |
| 03125338 | Stillwater Creek above Piedmont Lake OH | 06/03 16:30 EDT | 19.9 | 1,650 | -- | -- | -- | -- | -- | -- |
| 03126395 | Brushy Fork above Clendening Lake OH | 06/03 15:30 EDT | 20.5 | 2,100 | -- | -- | -- | -- | -- | -- |
| 03127980 | Clear Fork above Tappan Lake OH | 06/03 16:15 EDT | 22.5 | 1,170 | -- | -- | -- | -- | -- | -- |
| 03127986 | Standingstone Fork above Tappan Lake OH | 06/03 15:45 EDT | 20.8 | 1,510 | -- | -- | -- | -- | -- | -- |
| 03127989 | Beaverdam Run above Tappan Lake OH | 06/03 16:15 EDT | 22.5 | 194 | -- | -- | -- | -- | -- | -- |
| 03140853 | Seneca Fork above Senecaville Lake OH | 06/03 16:15 EDT | 22.2 | 456 | -- | -- | -- | -- | -- | -- |
| 03140900 | South Fork above Senecaville Lake OH | 06/03 15:45 EDT | 24.0 | 465 | -- | -- | -- | -- | -- | -- |
| 03140950 | Beaver Creek above Senecaville Lake OH | 06/03 16:30 EDT | 23.2 | 708 | -- | -- | -- | -- | -- | -- |
| 03145483 | Raccoon Creek near Granville OH | 06/03 16:00 EDT | 22.6 | 671 | 8.1 | 10.5 | 13.2 | -- | -- | -- |
| 03159540 | Shade River near Chester OH | 06/03 16:00 EDT | 20.0 | -- | -- | -- | -- | -- | -- | -- |
| 03216070 | OHIO RIVER AT IRONTON, OH | 06/03 16:00 EDT | 23.6 | 344 | 7.7 | 7.4 | 3.0 | 0.65 | -- | -- |
| 03219500 | Scioto River near Prospect OH | 06/03 16:00 EDT | 22.2 | 639 | 7.5 | 6.5 | -- | -- | -- | -- |
| 03220510 | Scioto R. at O'Shaughnessy Dam near Dublin OH | 06/03 15:00 EDT | 23.9 | 590 | 8.2 | 6.9 | -- | -- | -- | -- |
| 03221500 | Griggs Reservoir at Columbus OH | 06/03 15:00 EDT | 20.8 | -- | -- | -- | -- | -- | -- | -- |
| 03228039 | Scioto River above Shadeville OH | 06/03 16:00 EDT | 23.5 | 673 | 8.2 | 9.0 | 19.0 | -- | -- | -- |
| 03228300 | Big Walnut Creek at Sunbury OH | 06/03 15:00 EDT | 22.6 | 552 | 8.6 | 10.9 | -- | -- | -- | -- |
| 03228805 | Alum Creek at Africa OH | 06/03 16:00 EDT | 21.3 | -- | -- | -- | -- | -- | -- | -- |
| 03230427 | Clover Groff Ditch below Alton OH | 06/03 16:00 EDT | 26.3 | 572 | 8.7 | 11.7 | 2.8 | 1.1 | -- | -- |
| 03232470 | Paint Creek near Bainbridge OH | 06/03 16:15 EDT | 20.7 | -- | -- | -- | -- | -- | -- | -- |
| 03240000 | Little Miami River near Oldtown OH | 06/03 16:30 EDT | 20.5 | -- | -- | -- | -- | -- | -- | -- |
| 03242350 | Caesar Creek near Wellman OH | 06/03 16:00 EDT | 19.8 | -- | -- | -- | -- | -- | -- | -- |
| 03247041 | E Fk Little Miami River bl Harsha Dam nr Bantam OH | 06/03 16:00 EDT | 19.9 | -- | -- | -- | -- | -- | -- | -- |
| 03260500 | Indian Lake at Russells Point OH | 06/03 16:00 EDT | 25.3 | -- | -- | -- | -- | -- | -- | -- |
| 03262700 | Great Miami River at Troy OH | 06/03 16:00 EDT | 23.0 | -- | -- | -- | -- | -- | -- | -- |
| 03265000 | Stillwater River at Pleasant Hill OH | 06/03 16:00 EDT | 23.3 | -- | -- | -- | -- | -- | -- | -- |
| 03267900 | Mad River at St Paris Pike at Eagle City OH | 06/03 15:00 EDT | 14.5 | -- | -- | -- | -- | -- | -- | -- |
| 03268100 | Buck Creek bl CJ Brown Reservoir nr Springfield OH | 06/03 16:00 EDT | 20.6 | -- | -- | -- | -- | -- | -- | -- |
| 03274000 | Great Miami River at Hamilton OH | 06/03 16:00 EDT | 22.3 | -- | -- | -- | -- | -- | -- | -- |
| 04183500 | Maumee River at Antwerp OH | 05/04 12:15 EDT | -- | -- | -- | -- | -- | 4.32 | -- | -- |
| | [at sampler location] | 06/03 15:45 EDT | 21.8 | 572 | 7.6 | 6.6 | 46.2 | -- | -- | -- |
| 04188496 | Eagle Creek above Findlay OH | 06/03 15:45 EDT | 22.0 | 699 | 7.9 | 9.1 | 26.2 | -- | -- | -- |
| 04192500 | Maumee River near Defiance OH | 06/03 16:00 EDT | 21.3 | -- | -- | -- | -- | -- | -- | -- |
| 04193500 | Maumee River at Waterville OH | 06/03 16:00 EDT | 23.4 | 522 | 7.8 | 7.6 | 78.3 | -- | -- | -- |
| 04198000 | Sandusky River near Fremont OH | 06/03 16:30 EDT | 22.5 | -- | -- | -- | -- | -- | -- | -- |
| 04199000 | Huron River at Milan OH | 06/03 15:30 EDT | 24.0 | 528 | 8.3 | 8.8 | 5.6 | -- | -- | -- |
| 04199500 | Vermilion River near Vermilion OH | 06/03 16:00 EDT | -- | -- | -- | 8.4 | -- | -- | -- | -- |
| | | 06/03 11:45 EDT | -- | -- | 10.9 | -- | -- | -- | -- | -- |
| | | 05/29 10:00 EDT | 18.8 | 537 | -- | -- | 7.5 | -- | -- | -- |
| 04200500 | Black River at Elyria OH | 06/03 16:15 EDT | 22.8 | 582 | 8.3 | 10.0 | -- | -- | -- | -- |
| | [FNU_EXO] | 06/03 16:15 EDT | -- | -- | -- | -- | 9.5 | -- | -- | -- |
| 04201500 | Rocky River near Berea OH | 06/03 15:00 EDT | 21.4 | -- | -- | -- | -- | -- | -- | -- |
| 04206425 | Cuyahoga River at Jaite OH | 06/03 15:45 EDT | 21.2 | -- | -- | -- | -- | -- | -- | -- |
| | [YSI EXO turbidity sensor] | 06/03 15:45 EDT | -- | -- | -- | -- | 5.0 | -- | -- | -- |
| 04208000 | Cuyahoga River at Independence OH | 06/03 16:30 EDT | 20.9 | 829 | 8.0 | 9.1 | 10.9 | -- | -- | -- |
| 04208509 | Cuyahoga River at Rivergate Park at Cleveland OH | 06/03 16:00 EDT | 21.8 | -- | -- | -- | -- | -- | -- | -- |
| 04212100 | Grand River near Painesville OH | 06/03 16:00 EDT | 23.9 | 413 | 8.2 | 9.3 | 3.3 | -- | -- | -- |
| 04213000 | Conneaut Creek at Conneaut OH | 06/03 16:00 EDT | 13.3 | -- | -- | -- | -- | -- | -- | -- |
| 395339083130100 | Big Darby Creek above Georgesville OH | 06/03 16:00 EDT | 22.9 | 679 | 8.6 | 14.2 | -- | -- | -- | -- |
| 411402080492400 | Mahoning River near U.S. Route 422 at Warren OH | 06/03 16:30 EDT | 20.1 | 358 | 7.7 | 8.2 | -- | -- | -- | -- |
| 412122083061400 | Sandusky River below Bradys Island at Fremont OH | 06/03 16:00 EDT | 22.2 | 519 | -- | 7.4 | 93.1 | -- | -- | -- |
Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data
starting March 11, 2024 