The Map Library and GIS products are part of the Ohio Coastal Atlas suite of mapping resources developed to provide coastal decision-makers, professionals, educators, interest groups and the public with information about Lake Erie and its watershed. Maps and graphics focus on Ohio's coastal counties, Lake Erie, Lake Erie Watershed, the Great Lakes and our nations coast.

Maps which have been created by the OCM and used in various OCM applications and/or created for our partner agencies' needs are available below to download as PDF files. The Interactive Coastal Atlas Map Viewer (version 2.0), which features many data layers is accessible by selecting Interactive Atlas. Topic-specific, interactive viewers are accessible by selecting Use Case Map Viewers.

While some maps are created to print at a variety of sizes including large poster format, most map files linked below scaled to print on 11x17 paper. Printer settings can be adjusted to print the maps on other standard paper sizes.

Maps Generated by the Office of Coastal Management

• Ohio Coastal Counties
• Lake Erie and the Lake Erie Watershed
• Great Lakes
• National

Ohio Coastal Management Program/Coastal Regulatory Maps

• Designated Coastal Management Area Maps illustrate the detailed Coastal Management Area boundary in frame-by-frame PDF file series. Territory from nine of Ohio's 88 counties lies within the Coastal Management Area which is sometimes referred to as the "coasal zone."

• Final 2010 Coastal Erosion Area maps - In accordance with Ohio Revised Code, the ODNR Division of Geological Survey periodically maps Ohio’s Lake Erie coast to identify areas with higher erosion rates. The objective of the Coastal Erosion Area (CEA) Program is to identify the hazards and mitigate the economic losses of erosion-related damage. The latest remapping was finalized in 2010. Based on the amount of recession that occurred between 1990 and 2004, areas projected to erode more than 11 feet over the next 30 years if no preventative steps are taken, are included in the 2010 designated coastal erosion areas as shown on these maps.

Other Lake Erie-related Maps

• Wind Turbine Favorability Analysis Map (v1.4) by the Office of Coastal Management
• Historic USGS Topographic maps of Ohio hosted by Maptech
• East Sandusky Bay Water Trail Map and Guide from the ODNR Division of Watercraft.
• Lake Erie Nautical Charts from the National Oceanic and Atmospheric Administration's Office of Coast Survey. These can also be viewed on the "Ports, Harbors and Recreational Boating Map Viewer."
• 2010 Census Data Map showing population change around the Great Lakes