Ohio Watersheds

  1   Ottawa-Stony  
  2   Raisin
  3   Tiffin     
  4   St. Joseph
  5   Upper Maumee   
  6   Lower Maumee
  7   Auglaize     
  8   St. Marys
  9   Blanchard   
10  Cedar-Portage
11  Sandusky   
12  Lake Erie Islands
13  Huron-Vermilion   
14  Black-Rocky
15  Cuyahoga   
16  Chagrin-Ashtabula  
17  Grand
18  Chautauqua-Conneaut
19  Shenango   
20  Mahoning
21  Upper Ohio
22  Upper Ohio-Wheeling
23  Little Muskingum-Middle Island
24  Muskingum   
25  Wills
26  Tuscarawas   
27  Walhonding
28  Mohican     
29  Licking
30  Hocking                                                               Souce: Ohio Department of Natural Resources
31  Upper Ohio-Shade

32  Symmes-Raccoon
33  Little Scioto-Tygarts
34  Lower Scioto   
35  Upper Scioto   
36  Paint 37 Ohio Brush-Whiteoak
38  Little Miami
39  Middle Ohio-Laughery
40  Lower Great Miami
42  Upper Great Miami
43  Mississinewa
44  Upper Wabash

A Drainage Divide...

The yellow line below indicates a geographical divide for watershed drainage in Ohio.  Watersheds North of the yellow line drain into Lake Erie and watersheds South of the yellow line drain into the Mississippi waterbasin and out into the Gulf of Mexico.

More information on Ohio's watersheds may be found at:

1. Ohio Watersheds
   
   
2. "Experience Ohio's Watersheds" by City and Regional Planning Program, Ohio State University.

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