GIS & Interactive Mapping

Assortment of maps


GIS (Geographical Information System) is a computer system capable of capturing, managing, analyzing, and displaying geographically referenced information; that is, data identified according to its location. ERCA began using GIS in the mid 1990s to support its programs. Today, the GIS program includes creating and maintaining authoritative spatial datasets, managing ERCA’s digital mapping portal, supporting spatial and non-spatial databases, providing GIS project support, and the production of maps.

The use of GIS allows efficient and effective input for use in regulations, municipal planning, recreation, and restoration projects. It also supports information linkages between ERCA and its municipal partners, and assists in municipal planning and implementing watershed management priorities.

Digital aerial photos were taken of the region for the years 2000, 2004, 2008, 2010 and 2013. The extent of these photos includes all municipalities including the County of Essex, City of Windsor, Point Pelee National Park, and may include Pelee Island. Generally, these photos are available for viewing for free through the digital interactive mapping portals available from various municipalities.

Interactive Mapping

Step 1: Launch the Map

Click the link below and select “Public”, then click the “Launch Map Viewer” button.

Step 2: Find your area of interest by zooming in on the map

By default you will be able to see whether you are in ERCA’s Limit of Regulated Area. Explore the available layers on the left to get further spatial information about your area of interest.


This interactive mapping is presented for visual reference only. Data represented should not to be considered as legal boundaries. Confirmation of actual boundaries of the Limit of Regulated Area would need to be field verified by ERCA staff to ensure compliance with the text based regulations as further detailed in the “Determination of Regulation Limits” reference manual located at the ERCA office.