Ontario Lake Depths
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Fletcher Lake

Haliburton County, Ontario · MNRF bathymetric survey
21.3m Mapped depth
70 ft
270 ha 8 contours Fishing access
Paddling Index70Goodsheltered geometry · wooded shoreline
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Depth scale

The lake

Survey readout

Fletcher Lake is mapped to a depth of 21.3 m (70 ft) on the Ontario MNRF survey and covers about 270 ha (667 acres) in Haliburton County, Ontario. Depths come from the Ontario MNRF survey of 1975.

Measured from the Ontario MNRF bathymetry survey.

Deepest mapped contour
21.3 m (70 ft)
Survey year
1975
Surface area
270 ha (667 acres)
Shoreline
21.9 km (13.6 mi) · irregular
Fishing access
1 MNRF fishing access point · 1 boat launch
Additional depth details8 contours
Contour depths
0–21.3 m (70 ft)
Deep-spot markers
21.3 m (70 ft)
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Chart data

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
45.35369, -78.78195
MNRF lake ID
17-6738-50244
Vertical exaggeration
1.4×
Basemap
Ontario FRI
Model size
1.6 MB

Check the source: this lake’s record (17-6738-50244) 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: 1975. This model was built 2026-09-06. Depths between contours are interpolated, not measured.

Paddling

Paddling Index methodology v1.0 · calculated 2026-09-16
70 / 100GoodData confidence: High

Fletcher Lake has a mostly natural, lightly developed setting, generally sheltered geometry, nearby higher-volume roads.

Why this score?5 components

Included in the index

ComponentRatingPoints of weightMeasurement
Natural settingVery Good28.1 of 3585% natural land cover within 150 m of shore (84% forest, 1% wetland; 14% developed)
Geometric wind exposureVery Good19.8 of 29mean fetch 897 m · 8% of sampled water within 500 m of shelter · generally short fetch
Motor & speed rulesNot 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 accessGood15.0 of 181 MNRF fishing access point · boat ramp
Road isolationMixed6.6 of 18nearby higher-volume roads · 32 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 — 84% forest and 1% wetland cover within 150 m of shore
Mapped wildlife habitat
Mapped — Ontario MNRF has mapped moose aquatic feeding areas and deer 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.
How this index is calculated. The Paddling Index is a relative composite derived from lake geometry and public land-cover, access and road-network data. It is not a user review, a safety rating, or a prediction of an individual outing. Differences of a few points should not be treated as meaningful — an 84 and an 82 are broadly comparable. Components and weights for Ontario lakes: natural setting 35%, geometric wind exposure 29%, public access 18%, road isolation 18%. Motor and speed restrictions are not modelled for Ontario, and road traffic is estimated from road class, not measured. Where a component has no data the remaining weights are renormalized and the confidence rating is lowered; below Medium confidence no number is shown. Ontario scores are relative to other Ontario lakes and are not directly comparable with Paddling Index scores on our sister sites, which use different data sources and include a watercraft-rules component. Sources: Ontario MNRF bathymetry outline (0 m contour or survey index polygon), Ontario Land Cover v1.0, Ontario MNRF (Open Government Licence – Ontario) (2020), Ontario MNRF Fishing Access Points (Open Government Licence – Ontario) (2026-09) and Ontario Road Network (Open Government Licence – Ontario); traffic estimated by road class, not measured (2026-09). Conditions change quickly — check current weather and local conditions before going out.

Angler catch reports

Fish ON-Line · 2013–2025

What anglers say they caught here, logged trip by trip in Ontario’s Fish ON-Line app — most recently in May 2025.

35Trips logged
6Species
432Fish reported

Pictures are sized relative to each other. Illustrations are AI-generated representative adults in everyday colours, not photographs (provenance).

Lake Trout21 of 35 trips · 94 caught
Smallmouth Bass17 of 35 trips · 330 caught
Yellow Perch3 of 35 trips · 3 caught
Brook Trout2 of 35 trips · 2 caught
Largemouth Bass1 trip · one angler’s report · 2 caught
Walleye1 trip · one angler’s report · 1 caught

How people fish it: ice 49% · boat 43% · shore 9%
Catch rate: about 2.4 fish an hour, all species together (35 trips, 178 hours logged)
Kept: 10% of the fish reported; the rest were released

Trips are logged voluntarily by anglers in Ontario’s Fish ON-Line app. This is what people report catching, not a Ministry survey, and a species nobody has logged may still be here. Contains information licensed under the Open Government Licence – Ontario. Source: Ontario Ministry of Natural Resources, Fish ON-Line. A logged catch does not mean it is legal to catch or keep: check the Ontario Fishing Regulations Summary for this lake’s zone and exceptions.
Quick answers

Fletcher Lake — common questions

How deep is Fletcher Lake?

The deepest contour on the Ontario MNRF bathymetric survey of Fletcher Lake is 21.3 m (70 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 Fletcher Lake?

Fletcher Lake covers about 270 ha (667 acres) in Haliburton County, Ontario.

Is there public access to Fletcher Lake?

The Ontario MNRF lists 1 fishing access point within 100 m of the shoreline of Fletcher 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.