Lake index snapshot: Jul 15, 2026. Individual survey dates are not supplied in this index.
Williamson Lake fishing information
Williamson Lake is a lake or pond in Ontario’s Fisheries Management Zone 10 near Montgomery Township. Use this profile for recorded fish species, available lake measurements and fishing-zone information. Open the interactive map for live conditions and additional records.
Official zone rules ↗
Williamson Lake depth information
Searching for a Williamson Lake depth chart? The available Ontario MNRF source data reports a maximum depth of 33.6 metres. This is lake-profile reference data, not a navigational bathymetric contour chart.
Fish species in Williamson Lake
Species come from MNRF survey records — absence of a record doesn't guarantee absence of the fish.
Fishing access
Access-point details have not been included in this lake’s saved profile. This does not establish whether public access is available.
Look for access points on the map →
Stocking history
Stocking details have not been included in this lake’s saved profile. This does not mean it has never been stocked.
Check stocking history on the map →
Nearby lakes and rivers
Browse all named waterbodies in FMZ 10 →
Open Williamson Lake on the interactive map → for live weather, water levels, solunar times and full stocking history. Always confirm seasons, limits and sanctuaries in the official Ontario Fishing Regulations Summary.