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Watershed Groups in Ohio

Click on a county below to see a list of local watershed groups. Or view the complete list of watershed groups in our database. Note that groups will not appear in the county lists if they do not have counties-of-coverage information on record.

View a map of watershed areas by 8-digit Hydrologic Unit Codes (HUC).

Please report any errors or omissions in this list by emailing watershedweb@ag.osu.edu.

Below are Ohio counties listed alphabetically. Skip the graphical map to go to that list.

Map of Ohio with County boundaries

Below are Ohio counties listed alphabetically. Skip this menu to go to those starting with A and B Skip to those starting with C Skip to Ohio counties starting with D, E, F, and G Skip to Ohio counties starting with H Skip to Ohio counties starting with J, K, and L Skip to Ohio counties starting with M Skip to Ohio counties starting with N, O, and P Skip to Ohio counties starting with R and S Skip to Ohio counties starting with T, U, and V Skip to Ohio counties starting with W

Adams | Allen | Ashland | Ashtabula | Athens | Auglaize | Belmont |
Brown | Butler | Carroll | Champaign | Clark | Clermont | Clinton |
Columbiana | Coshocton | Crawford | Cuyahoga | Darke | Defiance | Delaware |
Erie | Fairfield | Fayette | Franklin | Fulton | Gallia | Geauga |
Greene | Guernsey | Hamilton | Hancock | Hardin | Harrison | Henry |
Highland | Hocking | Holmes | Huron | Jackson | Jefferson | Knox |
Lake | Lawrence | Licking | Logan | Lorain | Lucas | Madison |
Mahoning | Marion | Medina | Meigs | Mercer | Miami | Monroe |
Montgomery | Morgan | Morrow | Muskingum | Noble | Ottawa | Paulding |
Perry | Pickaway | Pike | Portage | Preble | Putnam | Richland |
Ross | Sandusky | Scioto | Seneca | Shelby | Stark | Summit |
Trumbull | Tuscarawas | Union | Van Wert | Vinton | Warren | Washington |
Wayne | Williams | Wood | Wyandot

 

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If you have trouble accessing this page and need to request an alternate format, contact our web support at watershedweb@ag.osu.edu.
Williams County Franklin County Cuyahogo County Fulton County Lucas County Defiance County Henry County Wood County Paulding County Ottawa County Van Wert County Putnam County Mercer Allen Auglaize Darke Shelby Miami Hancock Hardin Logan Champaign Clark Madison Union Marion Delaware Wyandot Seneca Sandusky Crawford Erie Huron Morrow Richland Preble Montgomery Greene Butler Hamilton Warren Clermont Clinton Brown Adams Highland Fayette Pickaway Ross Pike Scioto Lorain Lawrence Gallia Meigs Jackson Vinton Hocking Athens Washington Monroe Noble Fairfield Perry Morgan Licking Knox Muskingum Guernsey Belmont Jefferson Harrison Columbiana Carroll Coshocton Tuscarawas Holmes Ashland Wayne Stark Medina Summit Lake Geauga Portage Mahoning Trumbull Ashtabula