Waters · Canada
Ottawa River fishing report
Updated Monday, 24 August 2026 · refreshed several times daily
A vast, moody river system with a cult muskie following — long deep basins, current necks and weedlines that produced some of Canada's largest measured fish.
Today's report: good (79/100)
Smallmouth Bass is the most promising species on Ottawa River today. Water temperature is around 16.4°C and barometric pressure is stable.
Best time to fish today
- 17:00–19:00 local time — score 75/100
- 10:00–12:00 local time — score 82/100
- 13:00–15:00 local time — score 73/100
3-day outlook by species
| Species | Monday 24 Aug | Tuesday 25 Aug | Wednesday 26 Aug |
|---|---|---|---|
| Muskellunge | 61 — good | 61 — good | 59 — fair |
| Walleye | 69 — good | 70 — good | 72 — good |
| Smallmouth Bass | 79 — good | 81 — excellent | 76 — good |
Why this score
Cast & Scan uses a deterministic, published scoring model — no black box. The strongest influences on today's Ottawa River rating:
- water temperature: helping (+1)
- light: helping (+1)
- wind: helping (+1)
- precipitation: helping (+0.9)
- season: helping (+0.85)
- pressure trend: helping (+0.8)
Forecast computed Mon, 24 Aug 2026 20:04:09 GMT · data: Open-Meteo · refreshed several times daily · see our published accuracy
Scan your exact spot
This page rates a representative point on Ottawa River. Bays, river mouths and depth changes can fish very differently — open the scanner, drop a pin on your exact swim and get a spot-specific forecast with tactics. Free, in the browser, no signup.
Wondering how this stacks up against the apps you already know? Cast & Scan vs Fishbrain vs BassForecast — an honest comparison, including where they beat us.
Nearby waters
- St. Lawrence River (Thousand Islands) — New York, USA (132 km away)
- Bay of Quinte — Ontario, Canada (171 km away)
- Lake Champlain — Vermont/New York, USA (261 km away)
- Susquehanna River — Pennsylvania, USA (586 km away)