Map/Lakes/Southern & Central Ontario
O'Brien Lake
Surface area
87 ac35 ha
Max depth
55 ft16.76 m
Mean depth
14 ft4.36 m
Mgmt zone
FMZ 18
Shoreline
3.5 mi5.7 km
Depth map
None on file
O'Brien Lake is the 1208th-largest of 4,097 named lakes in Southern & Central Ontario, with 3.5 miles of charted shoreline and 2 islands. Its 55 ft maximum depth is greater than 70% of depth-surveyed lakes in the region.
Fish species
From MNRF aquatic resource surveys.
Also present: Banded Killifish, Bluegill, Brown Bullhead, Pumpkinseed, Rainbow Trout, Rock Bass
Lodges & operators0
No operators recorded on this lake yet. Know one? It may be listed under a nearby community — browse the map.
Similar water
Same region, overlapping species, comparable size.
- Bass Lake10 shared species · 227 ac
- Grippen Lake10 shared species · 512 ac
- Little Lake10 shared species · 947 ac
- Otty Lake10 shared species · 1,590 ac
- Lake Huron (lac Huron)10 shared species · 5,432,227 ac
Nearby lakes
- Farren Lake1.4 mi · species data
- Christie Lake2.4 mi · species data
- Crosby Lake2.2 mi · species data
- Davern Lake2.1 mi
- Little Silver Lake2.6 mi · species data
- Rainbow Lake2.9 mi · species data