Lake Diefenbaker

Boat Ramps: 3
Access Points: 0
Species: 0

Lake Diefenbaker is one of Saskatchewan's premier sport fishing destinations and the largest reservoir in southern Saskatchewan. Formed by the Gardiner Dam and the Qu'Appelle Valley Dam, this massive manmade lake stretches along approximately 800 kilometers of shoreline, offering anglers hundreds of bays, coulees, and coves to explore across all seasons. The lake sits within Saskatchewan's Southern Fishing Zone and draws anglers from across Canada and beyond, having produced three world record-breaking catches. Whether you're chasing trophy walleye through the summer months, targeting rainbow trout in the cold clear waters, or drilling holes through the ice in winter, Lake Diefenbaker delivers a genuinely world-class fishing experience in a dramatic prairie landscape.

Sk licenses and regulations4 to check before you go

Species & education

Learn what type of fish are at Lake Diefenbaker and what's needed to catch them.

No species information available.

Fishing spots, boat ramps & amenities

Learn how to get on Lake Diefenbaker. 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 Diefenbaker

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.

Sk licenses and regulations

Saskatchewan 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.

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Saskatchewan Fishing License

Residents and Non-Residents aged 16 and older must have a valid Saskatchewan Angling License.

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Saskatchewan Fishing Regulations

Sport fishing in Saskatchewan is regulated by The Fisheries Regulations under The Fisheries (Saskatchewan) Act, 2020. Below is a summary of the major regulations, which apply to all provincial Crown waters in Saskatchewan, excluding federal waters (e.g. Prince Albert National Park), and must be complied with at all times. Complete copies of the Act and Regulations may be obtained from the Publications Centre or by calling 1-800-226-7302.

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Saskatchewan Stream Access Laws

Saskatchewan is divided into three management zones for angling regulation.

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Take Lake Diefenbaker 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 Diefenbaker to use it offline when coverage drops.
Log your catches here
Keep a private fishing journal for Lake Diefenbaker 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.