Map/Lakes/Northeastern Ontario
Flatstone Lake
Surface area
155 ac63 ha
Max depth
45 ft13.7 m
Mean depth
16 ft5 m
Water type
Cold-water
Mgmt zone
FMZ 8
Shoreline
2.6 mi4.2 km
Depth map
Available
Flatstone Lake is the 867th-largest of 4,179 named lakes in Northeastern Ontario, with 2.6 miles of charted shoreline and 5 islands. Its 45 ft maximum depth is greater than 52% of depth-surveyed lakes in the region.
Fish species
From MNRF aquatic resource surveys.
Also present: Common Shiner, Rainbow Trout, Rock Bass, White Sucker
Stocked: Rainbow Trout, Splake (most recently 2025).
Lodges & operators0
No operators recorded on this lake yet. Know one? It may be listed under a nearby community — browse the map.
Stocking history
MNRF recreational fish stocking recorded for this water.
| Year | Species | Fish stocked |
|---|---|---|
| 2025 | Splake | 1,920 |
| 2024 | Rainbow Trout | 2,000 |
| 2023 | Rainbow Trout | 3,300 |
| 2022 | Rainbow Trout | 3,300 |
| 2021 | Rainbow Trout | 3,300 |
| 2020 | Rainbow Trout | 3,300 |
| 2019 | Rainbow Trout | 3,300 |
| 2018 | Rainbow Trout | 3,300 |
| 2017 | Rainbow Trout | 3,300 |
| 2016 | Rainbow Trout | 3,300 |
Similar water
Same region, overlapping species, comparable size.
- Trout Lake6 shared species · 4,678 ac
- Lake Bernard6 shared species · 5,180 ac
- Wanapitei Lake (lac Wanapitei)6 shared species · 32,913 ac
- Greenleaf Lake5 shared species · 156 ac
- Black Duck Lake5 shared species · 177 ac
Nearby lakes
- Sigs Lake0.6 mi · species data
- Crawford Lake1.1 mi · species data
- Lost Lake1.1 mi · species data
- Wigwam Lake1.3 mi · species data
- Leroy Lake1.7 mi · species data
- Babs Lake1.2 mi · species data