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Where to fish

  • Forecast
  • Catches

Mine

  • Favorites
Forecast
AboutHow the forecast worksWhere fish livePrivacyTerms[email protected]
© 2026·AI-powered bite forecast
0.1.0+2161 · b4069346

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Canada / Ontario / Ottawa River

Bite forecast: Ottawa River

  • length 55 km
  • Flows into Lake Erie, Lake Erie drainage basin
Loading map…

Best fishing days for the next week

  1. TuesdaySeptember 8weather-based forecast
    69/100high activity

    Clear: 2–14 °C

  2. SundaySeptember 6weather-based forecast
    63/100high activity

    Clear: 13–26 °C

  3. SaturdaySeptember 5weather-based forecast
    61/100high activity

    Clear: 11–24 °C

Nearby towns

  • Ottawa1 km

Ottawa River (Ontario) — a spot well known among anglers. About 55 km long. Flows into Lake Erie, Lake Erie drainage basin. Nearest town — Ottawa. This page shows an hourly bite forecast for today and the week ahead; the algorithm factors in the weather, atmospheric pressure, and the moon phase.

Loading map…

Catches

Recorded 16 catches here. Most commonly caught: Bluegill, Channel catfish, Smallmouth bass. Peak season: June–August.

  • Smallmouth bass — Ottawa River, Aug 08, 10:02 AM
    Smallmouth bass
    Ottawa River
    Aug 08, 10:02 AM
  • European eel — Ottawa River, Sep 26, 2025, 2:48 PM
    European eel
    Ottawa River
    Sep 26, 2025, 2:48 PM
  • Channel catfish — Ottawa River, Jun 11, 2024, 2:28 PM
    Channel catfish
    Ottawa River
    Jun 11, 2024, 2:28 PM
  • Carp — Ottawa River, Aug 29, 2023, 12:37 PM
    Carp
    Ottawa River
    Aug 29, 2023, 12:37 PM
  • Bluegill — Ottawa River, Aug 22, 2023, 1:41 PM
    Bluegill
    Ottawa River
    Aug 22, 2023, 1:41 PM
  • Bluegill — Ottawa River, Aug 22, 2023, 1:40 PM
    Bluegill
    Ottawa River
    Aug 22, 2023, 1:40 PM
  • Bluegill — Ottawa River, Aug 22, 2023, 1:39 PM
    Bluegill
    Ottawa River
    Aug 22, 2023, 1:39 PM
  • Bluegill — Ottawa River, Aug 22, 2023, 1:39 PM
    Bluegill
    Ottawa River
    Aug 22, 2023, 1:39 PM

Fish biting at this waterbody

Choose a fish to see its hourly forecast, catches and BiteGuide.

  • Channel catfish

Nearby rivers

  • Décharge du Lac Leamy6 km
  • Ruisseau de la Brasserie7 km
  • Petite rivière Blanche10 km

Nearby water bodies

  • PondThe Pond3 km
  • LakeMcKay Lake3 km
  • LakeLac Beauchamp3 km
  • LakeBaie Mc-Laurin5 km
  • LakeLeamy Lake7 km
  • LakeLac de la Carrière7 km
  • LakeLa Crinque7 km
  • LakeRéservoir de la Blanche8 km
  • PondBrown's Inlet9 km
  • LakeDow's Lake9 km

Bite calendar

Aug 31 – Sep 6
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Bite activity:highmediumlowslow
Based on:weatherseasonal
What is a bite calendar?
Coho salmonLake sturgeonPikeYellow perchBrook troutMuskellungeSaugerSmallmouth bassWalleyeWhitefishAtlantic salmonBurbotSteelheadBlack crappieBrown troutCarpChannel catfishLake troutLargemouth bassRainbow troutChinook salmonRainbow smelt

Atlantic salmon

6/10 · Fair

Hourly activity

0:006:0012:0018:0023:00
Bite activity:highmediumlow

The bite is moderate — fish feed in short bursts. Pressure is rising — activity tends to be more subdued.

Peak bite hours

Best time — 07:00–08:00 (dawn bite) and 20:00–21:00 (dusk bite).

Tactics

Work the cover — snags, weed edges, hole entrances; retrieve the lure with pauses.

Lures

In clear water, natural colors work best: salmon spoon or salmon fly.

Gear

Pack transitional-season clothing — mornings and evenings are chilly.

Summary

An average day — best chances during peak windows.

How this forecast is calculated

Why this forecast

The computed water temperature is around 17 °C — warmer than the 4–14 °C comfort range for Atlantic salmon: in the heat it drops deeper and feeds less often.

Computed water temperature by month; the green band is the 4–14 °C comfort rangecomfort 4–14 °C17 °C
JFMAMJJASOND

Atlantic salmon works the twilight: the peaks are pinned to sunrise and sunset — their times are in the sun-and-moon card above.

The day: daylight hours and when Atlantic salmon feeds0:0012:0024:00

Pressure is flat: it moves no more than 1 hPa over the day, so the weather isn't shifting today's bite.

Pressure through the day, 1 hPa change
00:00 · 102023:00 · 1019 hPa

One more input — the moon's feeding windows: within their hours the score sits higher than across the rest of the day. The window times are in the “Solunar feeding periods” card below.

Feeding windows on the day scale0:0012:0024:00

September is an active season for Atlantic salmon here.

JFMAMJJASOND

These are the same values the bite curve above was computed from. How the forecast works

5 SepSaturday, September 5
+21°

Clear · feels like +21°

Low / high
+10°…+24°
Precipitation
0.0 mm
Wind
2 m/s ESE
Cloud cover
0%
Humidity
58%
Pressure
1021 hPa
00:00+12°—2 m/snortheast wind, 2 m/s97%0%
01:00+12°—1 m/snortheast wind, 1 m/s97%0%
02:00+11°—1 m/snortheast wind, 1 m/s98%0%
03:00+11°—1 m/snorth wind, 1 m/s97%0%
04:00+11°—1 m/snorth wind, 1 m/s97%0%
05:00+11°—1 m/snortheast wind, 1 m/s97%0%
06:00+11°—1 m/snortheast wind, 1 m/s97%0%
07:00+10°—1 m/snortheast wind, 1 m/s97%0%
08:00+12°—1 m/snortheast wind, 1 m/s93%0%
09:00+15°—1 m/seast wind, 1 m/s84%0%
10:00+17°—1 m/seast wind, 1 m/s74%0%
11:00+19°—2 m/seast wind, 2 m/s65%0%
12:00+21°—2 m/ssoutheast wind, 2 m/s58%0%
13:00+22°—2 m/ssoutheast wind, 2 m/s52%5%
14:00+23°—2 m/ssoutheast wind, 2 m/s47%11%
15:00+24°—2 m/ssoutheast wind, 2 m/s45%7%
16:00+24°—2 m/ssoutheast wind, 2 m/s44%17%
17:00+24°—2 m/ssoutheast wind, 2 m/s44%5%
18:00+23°—1 m/ssoutheast wind, 1 m/s49%0%
19:00+21°—1 m/ssoutheast wind, 1 m/s62%0%
20:00+17°—2 m/ssoutheast wind, 2 m/s73%0%
21:00+15°—2 m/ssoutheast wind, 2 m/s79%6%
22:00+15°—2 m/ssoutheast wind, 2 m/s81%100%
23:00+14°—2 m/ssoutheast wind, 2 m/s81%5%
+24°+17°+10°
Weather throughout the day
0:006:0012:0018:0023:00

Sun and moon

Saturday, September 5
The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
DaylightMoon above the horizon
Sunrise
06:49
Sunset
20:05
Day length
13 h 16 min
Sunshine hours
13 h
UV index
4
moderate
Moon
Waning crescent
Moonrise
—
Moonset
16:25

The day is 3 min shorter than yesterday.

Sunshine hours count direct sun only — cloud cover cuts it, so it is shorter than daylight.

Solunar feeding periods

+14% in the windowSaturday, September 5
Feeding windows on the day scale, local time0:0012:0024:00
Major periodsMinor periods
  • Major06:58–08:58Moon overhead
  • Minor15:55–16:55Moonset
  • Major19:30–21:30Moon underfoot

The windows are set by the moon's transit and rise, and the forecast above already accounts for them: within these hours the bite score sits higher than across the rest of the day, while the day's overall level still comes from the catch-calibrated model.

What are solunar periods?

Measured river conditions are available for Ottawa River: current gauge height, streamflow, and water temperature when reported by the source.

Water

Streamflow
778 m³/s

USGS gauge OTTAWA RIVER AT BRITANNIA, 19 km away · measured 2026-09-02 09:35 · data source · provisional data, subject to revision

BiteGuide·From anglers’ reports

What actually worked on this water

Based on 16 verified catchesPeriod: 2020–2026

This is a summary of anglers' reports, not a proven cause of the bite: conditions lining up does not mean they drove it.

By fish species

vertical axis — number of catches

036
6511111
BluegillChannel catfishCarpEuropean eelPikeSmallmouth bassYellow perch
By fish species
ValueCatchesShare
Bluegill638%
Channel catfish531%
Carp16%
European eel16%
Pike16%
Smallmouth bass16%
Yellow perch16%

By month

vertical axis — number of catches

059
13291
MayJunJulAugSep
By month
ValueCatchesShare
May16%
Jun319%
Jul213%
Aug956%
Sep16%

By time of day

vertical axis — number of catches

036
126421
689101314
By time of day
ValueCatchesShare
06:0016%
08:00213%
09:00638%
10:00425%
13:00213%
14:0016%