| 03086500 | Mahoning River at Alliance OH | 05/12 16:00 EDT | 14.2 | -- | -- | -- | -- | -- | -- | -- |
| 03090500 | Mahoning River bl Berlin Dam nr Berlin Center OH | 05/12 15:15 EDT | 13.3 | -- | -- | -- | -- | -- | -- | -- |
| 03091500 | Mahoning River at Pricetown OH | 05/12 16:00 EDT | 16.4 | -- | -- | -- | -- | -- | -- | -- |
| 03092090 | West Branch Mahoning River near Ravenna OH | 05/12 16:00 EDT | 13.9 | -- | -- | -- | -- | -- | -- | -- |
| 03092460 | West Branch Mahoning River at Wayland OH | 05/12 15:15 EDT | 13.7 | -- | -- | -- | -- | -- | -- | -- |
| 03094000 | Mahoning River at Leavittsburg OH | 05/12 15:15 EDT | 14.0 | -- | -- | -- | -- | -- | -- | -- |
| 03094704 | Mosquito Creek near Greene Center OH | 05/12 15:45 EDT | 13.7 | -- | -- | -- | -- | -- | -- | -- |
| 03095500 | Mosquito Creek bl Mosquito Ck Dam nr Cortland OH | 05/12 15:45 EDT | 17.0 | -- | -- | -- | -- | -- | -- | -- |
| 03098600 | Mahoning River below West Ave at Youngstown OH | 05/12 15:15 EDT | 15.0 | 348 | 8.0 | 8.6 | -- | -- | -- | -- |
| | Instream | 05/12 15:15 EDT | 14.6 | -- | -- | -- | -- | -- | -- | -- |
| 03099500 | Mahoning River at Lowellville OH | 05/12 16:00 EDT | 15.0 | 416 | -- | 8.8 | -- | -- | -- | -- |
| 03102950 | Pymatuning Creek at Kinsman OH | 05/12 15:30 EDT | 13.2 | -- | -- | -- | -- | -- | -- | -- |
| 03119341 | McGuire Creek above Leesville Lake OH | 05/12 15:45 EDT | 15.3 | 204 | -- | -- | -- | -- | -- | -- |
| 03119971 | North Fork McGuire Creek near Carrollton OH | 05/12 15:45 EDT | 15.2 | 196 | -- | -- | -- | -- | -- | -- |
| 03119979 | Bear Hole Run near Carrollton OH | 05/12 15:15 EDT | 14.1 | 153 | -- | -- | -- | -- | -- | -- |
| 03120820 | Indian Fork at Dellroy OH | 05/12 15:45 EDT | 13.6 | 218 | -- | -- | -- | -- | -- | -- |
| 03120869 | Willow Run near Dellroy OH | 05/12 15:45 EDT | 15.7 | 170 | -- | -- | -- | -- | -- | -- |
| 03120961 | Unnamed Tributary near Dellroy OH | 05/12 15:45 EDT | 15.7 | 280 | -- | -- | -- | -- | -- | -- |
| 03125338 | Stillwater Creek above Piedmont Lake OH | 05/12 15:30 EDT | 14.9 | 1,140 | -- | -- | -- | -- | -- | -- |
| 03126395 | Brushy Fork above Clendening Lake OH | 05/12 15:30 EDT | 15.7 | 1,900 | -- | -- | -- | -- | -- | -- |
| 03127980 | Clear Fork above Tappan Lake OH | 05/12 15:15 EDT | 15.8 | 1,040 | -- | -- | -- | -- | -- | -- |
| 03127986 | Standingstone Fork above Tappan Lake OH | 05/12 15:45 EDT | 16.0 | 1,540 | -- | -- | -- | -- | -- | -- |
| 03127989 | Beaverdam Run above Tappan Lake OH | 05/12 15:15 EDT | 16.5 | 177 | -- | -- | -- | -- | -- | -- |
| 03140853 | Seneca Fork above Senecaville Lake OH | 05/12 15:15 EDT | 14.1 | 396 | -- | -- | -- | -- | -- | -- |
| 03140900 | South Fork above Senecaville Lake OH | 05/12 15:45 EDT | 16.3 | 402 | -- | -- | -- | -- | -- | -- |
| 03140950 | Beaver Creek above Senecaville Lake OH | 05/12 15:30 EDT | 16.3 | 627 | -- | -- | -- | -- | -- | -- |
| 03145483 | Raccoon Creek near Granville OH | 05/12 16:00 EDT | 17.9 | 536 | 8.2 | 10.7 | 20.0 | -- | -- | -- |
| 03159540 | Shade River near Chester OH | 05/12 15:00 EDT | 15.6 | -- | -- | -- | -- | -- | -- | -- |
| 03216070 | OHIO RIVER AT IRONTON, OH | 05/12 16:00 EDT | 19.9 | 319 | 7.8 | 8.8 | 15.0 | 0.46 | -- | -- |
| 03219500 | Scioto River near Prospect OH | 05/12 16:00 EDT | 15.5 | 458 | 7.8 | 6.4 | -- | -- | -- | -- |
| 03220510 | Scioto R. at O'Shaughnessy Dam near Dublin OH | 05/12 15:00 EDT | 17.3 | 414 | 7.9 | 9.5 | -- | -- | -- | -- |
| 03221500 | Griggs Reservoir at Columbus OH | 05/12 15:00 EDT | 17.2 | -- | -- | -- | -- | -- | -- | -- |
| 03228039 | Scioto River above Shadeville OH | 05/12 15:00 EDT | 18.1 | 470 | 7.9 | 7.6 | 92.0 | -- | -- | -- |
| 03228300 | Big Walnut Creek at Sunbury OH | 05/12 15:00 EDT | 16.9 | 460 | 8.3 | 9.7 | -- | -- | -- | -- |
| 03228805 | Alum Creek at Africa OH | 05/12 16:00 EDT | 20.4 | -- | -- | -- | -- | -- | -- | -- |
| 03230427 | Clover Groff Ditch below Alton OH | 05/12 15:00 EDT | 20.8 | 502 | 8.9 | 17.2 | -- | 1.0 | -- | -- |
| | | 05/12 14:30 EDT | -- | -- | -- | -- | 622 | -- | -- | -- |
| 03232470 | Paint Creek near Bainbridge OH | 05/12 15:15 EDT | 18.9 | -- | -- | -- | -- | -- | -- | -- |
| 03240000 | Little Miami River near Oldtown OH | 05/12 15:30 EDT | 17.5 | -- | -- | -- | -- | -- | -- | -- |
| 03242350 | Caesar Creek near Wellman OH | 05/12 15:00 EDT | 15.5 | -- | -- | -- | -- | -- | -- | -- |
| 03247041 | E Fk Little Miami River bl Harsha Dam nr Bantam OH | 05/12 15:00 EDT | 13.3 | -- | -- | -- | -- | -- | -- | -- |
| 03260500 | Indian Lake at Russells Point OH | 05/12 16:00 EDT | 22.2 | -- | -- | -- | -- | -- | -- | -- |
| 03262700 | Great Miami River at Troy OH | 05/12 16:00 EDT | 17.6 | -- | -- | -- | -- | -- | -- | -- |
| 03265000 | Stillwater River at Pleasant Hill OH | 05/12 15:00 EDT | 17.9 | -- | -- | -- | -- | -- | -- | -- |
| 03267900 | Mad River at St Paris Pike at Eagle City OH | 05/12 15:00 EDT | 13.2 | -- | -- | -- | -- | -- | -- | -- |
| 03268100 | Buck Creek bl CJ Brown Reservoir nr Springfield OH | 05/12 16:00 EDT | 18.4 | -- | -- | -- | -- | -- | -- | -- |
| 03274000 | Great Miami River at Hamilton OH | 05/12 15:00 EDT | 19.1 | -- | -- | -- | -- | -- | -- | -- |
| 04183500 | Maumee River at Antwerp OH | 05/04 12:15 EDT | -- | -- | -- | -- | -- | 4.32 | -- | -- |
| | [at sampler location] | 05/12 14:45 EDT | 16.9 | 498 | 7.7 | 8.0 | 67.2 | -- | -- | -- |
| 04188496 | Eagle Creek above Findlay OH | 05/12 14:45 EDT | 15.5 | 557 | 7.8 | 9.5 | 33.9 | -- | -- | -- |
| 04192500 | Maumee River near Defiance OH | 05/12 15:00 EDT | 17.1 | -- | -- | -- | -- | -- | -- | -- |
| 04193500 | Maumee River at Waterville OH | 05/12 15:00 EDT | 18.3 | 484 | 7.9 | 8.4 | 128 | -- | -- | -- |
| 04198000 | Sandusky River near Fremont OH | 05/12 15:30 EDT | 15.7 | -- | -- | -- | -- | -- | -- | -- |
| 04199000 | Huron River at Milan OH | 05/12 15:30 EDT | 17.8 | 492 | 8.2 | 9.3 | 46.8 | -- | -- | -- |
| 04199500 | Vermilion River near Vermilion OH | 05/12 16:00 EDT | 18.1 | 483 | 8.2 | 9.6 | 24.7 | -- | -- | -- |
| 04200500 | Black River at Elyria OH | 05/12 15:15 EDT | 16.0 | 519 | 8.2 | 9.7 | -- | -- | -- | -- |
| | [FNU_EXO] | 05/12 15:15 EDT | -- | -- | -- | -- | 27.8 | -- | -- | -- |
| 04201500 | Rocky River near Berea OH | 05/12 15:00 EDT | 16.6 | -- | -- | -- | -- | -- | -- | -- |
| 04206425 | Cuyahoga River at Jaite OH | 11/02 10:15 EDT | 8.2 | -- | -- | -- | -- | -- | -- | -- |
| | [YSI EXO turbidity sensor] | 11/02 09:45 EDT | -- | -- | -- | -- | 2.7 | -- | -- | -- |
| 04208000 | Cuyahoga River at Independence OH | 05/12 15:30 EDT | Eqp | -- | -- | -- | -- | -- | -- | -- |
| | | 05/08 14:30 EDT | -- | Eqp | Eqp | Eqp | Eqp | -- | -- | -- |
| 04208509 | Cuyahoga River at Rivergate Park at Cleveland OH | 05/12 15:00 EDT | 17.0 | -- | -- | -- | -- | -- | -- | -- |
| 04212100 | Grand River near Painesville OH | 05/12 15:00 EDT | 15.6 | 418 | 8.1 | 10.1 | 5.5 | -- | -- | -- |
| 04213000 | Conneaut Creek at Conneaut OH | 05/12 16:00 EDT | 9.1 | -- | -- | -- | -- | -- | -- | -- |
| 395339083130100 | Big Darby Creek above Georgesville OH | 05/12 15:00 EDT | 17.7 | 570 | 8.2 | 9.6 | -- | -- | -- | -- |
| 411402080492400 | Mahoning River near U.S. Route 422 at Warren OH | 05/12 15:30 EDT | 14.6 | 313 | 7.7 | 9.1 | -- | -- | -- | -- |
| 412122083061400 | Sandusky River below Bradys Island at Fremont OH | 05/12 15:00 EDT | 16.7 | 404 | -- | 8.5 | 243 | -- | -- | -- |
Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data
starting March 11, 2024 