Mapping and Data

Conservation Halton (CH) takes an active role in accurately mapping hazard and environment related information and providing data services through the Geographic Information Systems Program (GISP). This enables information to be shared with both government and non-government agencies.

The GISP partners with both internal and external clients to maintain authoritative GIS datasets. This information can be provided in the form of analysis summaries, project services, maps and GIS data layers that support a wide variety of watershed activities including planning and permit review and restoration of sensitive natural heritage areas. Information is available as a map or digital data (in both GIS and non-GIS formats).

GIS Data

The Digital Information Request Form is used to list specific Geographic Information System (GIS) data sets that you wish to request from the Conservation Authority. Once completed this form is used by staff to complete a Data Sharing Agreement (DLA) for your signature that will describe the data requested and any fees that will be applied to complete your request. Once a DLA is signed staff will begin work on your request. If a fee is applicaple, this must be paid before the data is released.

Typically a request will be processed within a few days of receipt of the signed DLA, however, workloads and the size of your data request will have an impact on timelines. Staff will provide you with an anticipated delivery date.

The digital Data Holdings and Availability document will assist you in determining what data is available from Conservation Halton. It also provides useful information on where to go for "third party datasets" (data Conservation Halton cannot provide due to licensing restrictions). Our fee schedule is also described in this document. 

The Data Dissemination Policy provides an overview of data distribution at Conservation Halton and briefly describes the "Groups" subject to fees. Any fees recovered under this policy contribute to funding the update of GIS data and maps provided to the public. 


Property maps showing approximate regulation limits under Ontario Regulation 162/06 can be obtained by completing the Property Information Request Form and submitting it to the Planning and Regulation Services Department. Staff can review these maps with you and discuss any specifics around the environmental features and natural hazards that may be on your property. More detailed mapping information can also be obtained by Requesting Mapping (PDF) from our GIS Department. Cost recovery fees are charged for this service.

Web Based GIS Services

Conservation Halton now has online mapping which shows the Approximate Regulations Limit (ARL) throughout our watershed. The ARL mapping will allow you to look up your property and see if it may be within or near a regulated area under Ontario Regulation 162/06. Click the link in the right hand navigation bar, or click here to go to Online Mapping.