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Fishing around Ottawa
AI field guide · refreshed weeklyOttawa Fall Fishing: September Transition
What's biting
Largemouth Bass
Where: Shallow bays and weed edges of the Rideau River, Rideau Lake, and Ottawa River backwaters; look for remaining aquatic vegetation.
Early fall is prime—bass feed aggressively before water cools. Use topwater plugs or soft plastics (4–5 inch) in low-light hours (dawn, dusk, overcast). Target structure: fallen trees, dock pilings, reed beds in 1–2 m (3–6 ft) of water.
Smallmouth Bass
Where: Rocky shoals and drop-offs in the Rideau River, Ottawa River main channel, and deeper sections of Rideau Lake.
Smallmouth are transitioning to deeper water as temps drop; fish rocky points and 3–5 m (10–16 ft) depths with tube jigs or crayfish-pattern soft plastics. Early morning and late afternoon are most productive.
Walleye
Where: Rideau Lake main basin, Ottawa River channel, and deeper holes in the Rideau River; also Mooney's Bay.
Walleye are beginning their fall movement to deeper structure. Fish live shiners or jigs tipped with minnows in 4–6 m (13–20 ft) of water, especially around dusk when they feed. Jigging vertically over structure is effective.
Northern Pike
Where: Weed beds and shallower bays of Rideau Lake and Ottawa River backwaters; also Dow's Lake.
Pike remain in shallow weeds through early September; use large spinnerbaits (size 4–5), crankbaits, or 6–8 inch soft plastics. Cast along weed edges and work slowly—pike are less aggressive as water cools.
Yellow Perch
Where: Shallow bays and weed-lined shores of Rideau Lake, Ottawa River, and Mooney's Bay.
Perch school in deeper water as fall progresses but are still accessible in shallows this week. Use small jigs (1/8–1/4 oz) tipped with live minnows or small shiners in 1–3 m (3–10 ft) depths; fish early morning and evening.
Best times
Early morning (6–8 a.m.) and late afternoon to dusk (5–8 p.m.) are most productive. Overcast conditions on September 9–10 will be excellent; avoid midday bright sun. The waning crescent moon favors low-light feeding.
Waters to try
- Rideau Lake, Rideau River, Ottawa River (main channel and backwaters), Mooney's Bay, Dow's Lake, Kars Lake
Regulations
Check the Ontario Fishing Regulations Summary (https://www.ontario.ca/page/fishing-ontario) for current season status, bag limits, and size restrictions for each species. Regulations vary by water body and change annually. A valid Ontario fishing license is required.
Ontario Fishing Regulations Summary ↗The fishing note for Ottawa, every week
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