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Are old landslides in sensitive clay mapped near the home?
Parts of eastern Ontario, including much of Ottawa, sit on marine clay (Leda clay) that can fail in large slides along river valleys. The slopes concerned are part of the conservation authority's regulated hazard lands, and no open map of past slides is published for reuse.
Report check: Old landslides in sensitive clay. Entry reviewed 20 Oct 2026; each source below shows its own data date.
How a report shows itsample, made-up home
No open map of old landslides in sensitive (Leda) clay covers this address for reuse. Unstable slopes are part of the conservation authority's regulated hazard lands, so the conservation authority for this address can say what its maps show.
Where we read it
- Not in any report: where to look
Published byConservation Ontario
What the record is
Natural Resources Canada and the Geological Survey have studied the clay and the historic slides along the Ottawa, South Nation and other rivers, and the conservation authorities map the unstable slopes they regulate. None of those maps is licensed for a product like this one.
Our reports don't read these maps. The report still lists the check, and its line points to the conservation authority for the address, whose regulated-area map shows the hazard lands.
Where it runs
No open map of old landslides in sensitive (Leda) clay covers this address for reuse. Unstable slopes are part of the conservation authority's regulated hazard lands, so the conservation authority for this address can say what its maps show.
Sources
Look it up for one address
No record we may copy answers this check, so neither the free check nor the full report reads it. The full report still lists it, with the line above: where to look for that address.
Public-record information, not legal, financial, insurance or inspection advice. Records change and can be incomplete, and this page describes the records, not any particular home. Spotted an error, or have a question about this record? Email [email protected]; we answer from the record, and corrections are listed on the guide index. What we cover, city by city.