MAM Update - Special July 2017

Mines and Minerals Division: 

Larder Lake Mining Division Spatial Data Now Available

New data more accurately showing the location of unpatented mining claims, leases and patents for the Larder Lake Mining Division is now available on CLAIMaps. Other divisions for which similar data can currently be viewed include the Kenora, Red Lake, Patricia, Sault Ste. Marie, Sudbury and Southern Ontario mining divisions. Over the coming months, this new data will be made available for the remaining mining divisions as they are updated.

The updated map information represents all unpatented mining claims that have gone through the transition process for these seven mining divisions – as well as updates to township lot and concession fabric, where applicable.

To update CLAIMaps, the Provincial Recording Office staff plots the coordinates of new surveys received onto the disposition layer. That information is verified by the Ministry of Natural Resources and Forestry then uploaded into their Land Information Ontario (LIO) database. We then review the georeferenced claims and use the best available data to adjust boundaries as needed.

With the updating in place, clients are able to see the accurate location of georeferenced unpatented mining claims.

You should note that as staking activity continues across the province, this newer information will also need to be integrated into the updated maps over time. The next two divisions targeted will be the Porcupine division, followed by the Thunder Bay division.

Instructions on how to view the new data in CLAIMaps are available on our website.

For additional assistance or more information on these new data sets please contact Léanne Messier at 1-888-415-9845 ext 5793 or email at