Loughborough Lake
110 ft
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Depth scale
Survey readout
Loughborough Lake is mapped to a depth of 33.5 m (110 ft) on the Ontario MNRF survey and covers about 1,998 ha (4,937 acres) in Frontenac County, Ontario.
Measured from the Ontario MNRF bathymetry survey.
- Deepest mapped contour
- 33.5 m (110 ft)
- Surface area
- 1,998 ha (4,937 acres)
- Shoreline
- 76.9 km (47.8 mi) · irregular
- Fishing access
- 3 MNRF fishing access points · 3 boat launches
Additional depth details8 contours
- Contour depths
- 0–33.5 m (110 ft)
- Deep-spot markers
- 33.5 m (110 ft)
Provenance
Sources: Ontario MNRF / LIO Bathymetry, OpenStreetMap (ODbL), Contains information licensed under the Open Government Licence – Ontario, Contains modified Copernicus Sentinel data (Sentinel-2), processed by ontariolakedepths.com, Copernicus DEM 30 m (© DLR/Airbus).
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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 Copernicus DEM (30 m) elevation, with a Copernicus Sentinel-2 satellite basemap and OpenStreetMap shoreline. Colour shows surveyed depth; dark lines are the survey's own isobaths.
- Coordinates
- 44.42825, -76.44841
- MNRF lake ID
- 18-3873-49226
- Vertical exaggeration
- 4.93× below the waterline; land at true scale
- Basemap
- Copernicus Sentinel-2 · ESA, via Microsoft Planetary Computer
- Model size
- 2.1 MB
Check the source: this lake’s record (18-3873-49226) 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 2026-09-28. Depths between contours are interpolated, not measured.
Paddling
Paddling Index methodology v1.0 · calculated 2026-09-16Loughborough Lake has a mostly natural, lightly developed setting, long open-water fetch, substantial nearby higher-volume roads.
Why this score?5 components
Included in the index
| Component | Rating | Points of weight | Measurement |
|---|---|---|---|
| Natural setting | Very Good | 28.1 of 35 | 82% natural land cover within 150 m of shore (50% forest, 21% wetland; 8% developed) |
| Geometric wind exposure | Modest | 2.3 of 29 | mean fetch 3,842 m · 12% of sampled water within 500 m of shelter · long open-water 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 | 3 MNRF fishing access points · boat ramp |
| Road isolation | Modest | 0.9 of 18 | substantial nearby higher-volume roads · 747 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 — 50% forest and 21% wetland cover within 150 m of shore
- Mapped wildlife habitat
- None mapped — Ontario MNRF has not mapped moose, deer or waterfowl habitat within 1 km of this lake. The province maps these areas where it has surveyed, so this is not evidence that wildlife is absent. · Ontario MNRF Wildlife Values Area. Contains information licensed under the Open Government Licence – Ontario.
Compare Ontario lakes by Paddling Index →
Angler catch reports
Fish ON-Line · 2014–2023What anglers say they caught here, logged trip by trip in Ontario’s Fish ON-Line app — most recently in February 2023.
Pictures are sized relative to each other. Illustrations are AI-generated representative adults in everyday colours, not photographs (provenance).
How people fish it: boat 58% · ice 33% · shore 8%
Catch rate: about 1.8 fish an hour, all species together (12 trips, 52 hours logged)
Kept: 27% of the fish reported; the rest were released
About these fish → the Fish of Ontario guide
Loughborough Lake — common questions
How deep is Loughborough Lake?
The deepest contour on the Ontario MNRF bathymetric survey of Loughborough Lake is 33.5 m (110 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 Loughborough Lake?
Loughborough Lake covers about 1,998 ha (4,937 acres) in Frontenac County, Ontario.
Is there public access to Loughborough Lake?
The Ontario MNRF lists 3 fishing access points within 100 m of the shoreline of Loughborough Lake: 3 boat launches. 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.
