Johnnie Lake
100 ft
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Depth scale
Survey readout
Johnnie Lake is mapped to a depth of 30.5 m (100 ft) on the Ontario MNRF survey and covers about 365 ha (903 acres) in Sudbury District, Ontario.
Measured from the Ontario MNRF bathymetry survey.
- Deepest mapped contour
- 30.5 m (100 ft)
- Surface area
- 365 ha (903 acres)
- Shoreline
- 30.1 km (18.7 mi) · irregular
- Fishing access
- 1 MNRF fishing access point · 1 boat launch
- In
- Killarney Provincial Park · Ontario Parks
Additional depth details7 contours
- Contour depths
- 0–30.5 m (100 ft)
- Deep-spot markers
- 30.5 m (100 ft)
Provenance
Sources: Ontario MNRF / LIO Bathymetry, Ontario FRI Leaf-On Imagery, Ontario FRI LiDAR DTM, OpenStreetMap (ODbL), Contains information licensed under the Open Government Licence – Ontario.
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Map details & sources5 sources
All layers registered to one bounding box; positions in WGS 84.
Survey-derived depth contours drape over Ontario LiDAR (FRI DTM) elevation, with a Ontario FRI aerial basemap and OpenStreetMap shoreline. Colour shows surveyed depth; dark lines are the survey's own isobaths.
- Coordinates
- 46.09741, -81.23205
- MNRF lake ID
- 17-4826-51036
- Vertical exaggeration
- 1.4×
- Basemap
- Ontario FRI
- Model size
- 1.4 MB
Check the source: this lake’s record (17-4826-51036) in the Ontario MNRF bathymetry index, and the contour line layer the map is drawn from (Land Information Ontario open data, Open Government Licence – Ontario). Survey year: not recorded in the source. This model was built 2026-09-07. Depths between contours are interpolated, not measured.
Paddling
Paddling Index methodology v1.0 · calculated 2026-09-16Johnnie Lake has a heavily wooded and largely undeveloped setting, generally sheltered geometry, limited nearby major-road exposure.
On a canoe route · portages mapped. Portage trails end at this shoreline. Portages carry canoes over land between waters, and the ground around the lake in the 3D view is terrain those trails cross. Trail condition, length and elevation change are not measured here — check the park or canoe-route map before you go. Trails: OpenStreetMap (ODbL).
Why this score?5 components
Included in the index
| Component | Rating | Points of weight | Measurement |
|---|---|---|---|
| Natural setting | Excellent | 32.6 of 35 | 93% natural land cover within 150 m of shore (88% forest, 1% wetland; 1% developed) |
| Geometric wind exposure | Very Good | 18.0 of 29 | mean fetch 1,035 m · 5% of sampled water within 500 m of shelter · generally short fetch |
| Motor & speed rules | Not modelled | — | Canada publishes vessel motor and speed restrictions as federal legal schedules, not map data, so they are not part of the Ontario index. Check local signage and Transport Canada rules before going out. |
| Public access | Good | 15.0 of 18 | 1 MNRF fishing access point · boat ramp |
| Road isolation | Very Good | 11.6 of 18 | limited nearby major-road exposure · 19 Ontario Road Network segments within 1.2 km (traffic estimated from road class, not measured) |
Additional paddling considerations
These describe the lake but are not part of the v1 Paddling Index and do not change the number above.
- Wake sensitivity
- Low — wide enough that wakes disperse over most of the lake
- Observed motorized activity
- Unknown — No lake-level measurement of boat traffic is available. Legal permission to operate motors is not evidence of use.
- Wildlife habitat potential
- High — 88% forest and 1% wetland cover within 150 m of shore
- Mapped wildlife habitat
- Mapped — Ontario MNRF has mapped moose aquatic feeding areas and moose wintering area within 1 km of this lake. These are habitat records from provincial surveys, not animal counts; areas with nothing mapped may still hold wildlife. · Ontario MNRF Wildlife Values Area. Contains information licensed under the Open Government Licence – Ontario.
Compare Ontario lakes by Paddling Index →
Johnnie Lake — common questions
How deep is Johnnie Lake?
The deepest contour on the Ontario MNRF bathymetric survey of Johnnie Lake is 30.5 m (100 ft). That is the deepest depth the historical survey map records, which may differ from the deepest point of the lake itself.
How big is Johnnie Lake?
Johnnie Lake covers about 365 ha (903 acres) in Sudbury District, Ontario.
Is there public access to Johnnie Lake?
The Ontario MNRF lists 1 fishing access point within 100 m of the shoreline of Johnnie Lake: 1 boat launch. Recorded ownership: 1 provincial. The list includes municipal and privately owned sites, and some may charge a fee or restrict parking, so it confirms a place anglers use rather than a public right of way. Check locally before you go.
