Know Your Lake
Mazinaw Lake
Township of Addington Highlands; Township of North Frontenac, County of Lennox and Addington; County of Frontenac
Mazinaw Lake is in Addington Highlands, with its north end in North Frontenac. Bon Echo Provincial Park is on the lake; its 100 m high Mazinaw Rock has over 260 Indigenous pictographs.
Lake facts
Boating rules
No lake-specific restriction found in the schedules. Elsewhere on the lake the general rule applies: 10 km/h within 30 m of shore (Vessel Operation Restriction Regulations, s. 2(7)).
Public record · Transport Canada, Schedules of the Vessel Operation Restriction Regulations (TP 15587), 2nd edition April 2026 · checked November 5 2026Fish in the lake
Walleye, Northern Pike, Smallmouth Bass, Largemouth Bass, Lake Trout, Lake Whitefish, Cisco, Yellow Perch, Pumpkinseed, Rock Bass, Burbot, Brown Bullhead. These game and pan fish are recorded in the MNR lake record filed as Upper Mazinaw Lake; not all are common today.
Public record · Ontario MNR Aquatic Resource Area (ARA) Water Poly Segment, Land Information Ontario open data (data used by Fish ON-Line) · checked November 5 2026Fishing zone
Zone 18
Public record · Fisheries Management Zone 18, Ontario Fishing Regulations Summary, ontario.ca · checked November 5 2026Water clarity
Lake Partner Program volunteer data: 2025 average water clarity (Secchi depth) 4.6 m from 9 readings; 2025 average total phosphorus 4.2 micrograms per litre from 2 samples.
Public record · Ontario Lake Partner Program open data, Secchi depth and total phosphorus files (2025 release), data.ontario.ca/dataset/ontario-lake-partner · checked November 5 2026Boat launches
Provincial data lists 1 boat launch or access points on or beside the lake (0 marked municipal, provincial or federal; others private or not stated). Check ownership, fees and parking locally.
Public record · Ontario MNR Fishing Access Point layer, Land Information Ontario open data (points within 400 m of the lake outline) · checked November 5 2026Parks on the lake
Bon Echo Provincial Park (ontarioparks.ca/park/bonecho).
Public record · Ontario Parks: Bon Echo Provincial Park (Mazinaw Rock pictographs) · checked November 5 2026
Lake ratings
Rated 1 to 5 by cottage owners on this lake (one rating per owner) and by renters after a Dock & Loon stay (one per stay). An average shows once 3 people have rated. Every rating counts, low ones included. Ratings and tags are opinions, not checks of water quality, algae or ice safety.
| Rating | Cottage owners | Renters |
|---|---|---|
| Swimming | No ratings yet | No ratings yet |
| Quiet and calm | No ratings yet | No ratings yet |
| Fishing | No ratings yet | No ratings yet |
| Paddling | No ratings yet | No ratings yet |
| Boating and water sports | No ratings yet | No ratings yet |
| Scenery and sunsets | No ratings yet | No ratings yet |
General information only. Lake rules and conditions change: check the official source before you swim, boat or fish.