Please Note: These maps are not suitable for use in determining detailed boundaries for diversion permitting of Lake Erie-Ohio River waters.  The maps can be used for initial planning regarding diversions.  Please contact the Division of Water Resources to review any diversion proposals.  Copies of  "Principal Streams & Their Drainage Areas" can be obtained by contacting the Division of Water Resources by phone or e-mail. 

Principal Streams & Their Drainage Areas

Download & Online Viewing Options

• View Map [gif]
• Download Map [pdf]

Lake Erie - Ohio River Divide in Ohio

NOTE CONCERNING BASIN DIVIDE SOURCE DATA: The basin divide line shown on this map was derived from the Natural Resources Conservation Service ArcView shapefile "14-Digit Hydrologic Unit Areas for Ohio." This map may be used for initial planning regarding diversions of water across the divide.

Download & Online Viewing Options

• Statewide Basin Divide [pdf]
• Closeup of Akron Area [jpg]
• Closeup of Bucyrus Area [jpg]