Lake St. Lawrence
Lake St. Lawrence
- Boat Ramps
- 9
- Access Points
- 0
- Species
- 29
Lake St. Lawrence is a reservoir located along the St. Lawrence River in eastern Ontario, Canada, formed by the construction of the Moses-Saunders Power Dam as part of the St. Lawrence Seaway project. Stretching through a scenic landscape of islands, bays, and flooded shorelines, it offers a diverse and productive fishery that draws anglers from across the region. The lake is managed in partnership with the St. Lawrence Parks Commission and the Kemptville District of the Ontario Ministry of Natural Resources, ensuring a balance between recreational use and conservation. With its mix of shallow flats, deeper channels, and varied structure, Lake St. Lawrence provides excellent opportunities for both shore anglers and those fishing from boats.
Species & education
Learn what type of fish are at Lake St. Lawrence and what's needed to catch them.
Fishing spots, boat ramps & amenities
Learn how to get on Lake St. Lawrence. Uncover great fishing access points, boat ramps, and all the facilities you need for an unforgettable day on the water. Some locations shown may border or include private property. Always check property boundaries and applicable regulations before visiting. onWater's Public & Private Land layer can help you plan your access with confidence.
Know where you can legally fish on Lake St. Lawrence
See public and private land boundaries along the water, turn on private parcels with owner details to know where permission is required, and find land-trust parcels that offer permitted fishing access.
On licenses and regulations
Ontario Boating Regulations
This page explains what a Pleasure Craft License is, who needs one, how to apply for one, and how to keep your information up to date.
Ontario Fishing License
To fish in Ontario, individuals aged 18 to 64 require both an Outdoors Card and a valid fishing license. The Outdoors Card serves as a personal identification for licensing and is typically valid for three years.
Ontario Fishing Regulations
An annual guide to the rules and regulations for recreational fishing in Ontario. It contains information about recreational fishing licences, open seasons and catch limits, as well as up-to-date fishing regulations for each fishing zone.
Ontario Stream Access Laws
What you need to know about camping and other recreational activities on Ontario’s Crown land (also known as public land). This excludes provincial parks and conservation reserves.
Take Lake St. Lawrence with you
The onWater Fish app keeps this water's access points, species and conditions in your pocket, with the tools you use once you're there.
Use the map without signal
Download the map around Lake St. Lawrence to use it offline when coverage drops.
Log your catches here
Keep a private fishing journal for Lake St. Lawrence to find where and when fish are biting for you.
HD depth charts from Garmin
Find drop offs, ledges, channels, points and shallow flats with Garmin depth charts in the app.
Get the onWater Fish app
Free on iOS and Android
Water and weather conditions (10 day forecast)
See the best times to fish Lake St. Lawrence and check the forecast before you go.
No forecast data available.
Lake St. Lawrence fishing guides
Book a trip with a local fishing guide through Guidesly.

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