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Where to fish

  • Forecast
  • Catches

Mine

  • Favorites
ForecastCatchesFavorites
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© 2026·AI-powered bite forecast
0.1.0+2163 · 92c14a40

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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. WednesdaySeptember 9weather-based forecast
    67/100high activity

    Cloudy: 15–21 °C

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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.

Fish biting at this waterbody

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

  • Channel catfish

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

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
TuesdaySeptember 8weather-based forecast
66/100high activity

Drizzle: 9–13 °C

  • SundaySeptember 6weather-based forecast
    60/100high activity

    Partly cloudy: 13–25 °C

  • Nearby towns

    • Ottawa1 km

    Bite calendar

    7–Sep 13
    Mon
    Tue
    Wed
    Thu
    Fri
    Sat
    Sun
    Bite activity:highmediumlowslow
    Based on:weatherseasonal
    What is a bite calendar?
    Brook troutCoho salmonWhitefishCarpLake sturgeonLargemouth bassMuskellungePikeSaugerWalleyeYellow perchAtlantic salmonBrown troutSmallmouth bassSteelheadChannel catfishChinook salmonRainbow troutBlack crappieLake troutBurbotRainbow smelt

    Atlantic salmon

    7/10 · Good

    Hourly activity

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

    The bite is strong — fish are active. Weather is steady, with no sharp swings — fish behave predictably.

    Peak bite hours

    Best time — 07:00–08:00 (dawn bite) and 19:00–21:00 (dusk bite).

    Tactics

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

    Lures

    The water's turning murky — go with bright, noisy lures: salmon spoon or salmon fly.

    Gear

    Pack transitional-season clothing — mornings and evenings are chilly. Rain is expected — don't forget a rain jacket or a waterproof shell.

    Summary

    Worth going — it's a productive day.

    How this forecast is calculated

    Why this forecast

    The computed water temperature is around 14 °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 °C14 °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 dropping 9 hPa over the day — fish are usually more active ahead of a weather change.

    Pressure through the day, 9 hPa change
    00:00 · 102123:00 · 1012 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

    8 SepTuesday, September 8
    +10°

    Drizzle · feels like +9°

    Low / high
    +9°…+14°
    Precipitation
    1.0 mm
    Wind
    3 m/s E
    Cloud cover
    100%
    Humidity
    98%
    Pressure
    1018 hPa
    00:00+9°1.2 mm3 m/snortheast wind, 3 m/s98%100%
    01:00+9°1.2 mm3 m/snortheast wind, 3 m/s98%100%
    02:00+9°1.2 mm3 m/snortheast wind, 3 m/s98%100%
    03:00+9°0.2 mm3 m/snortheast wind, 3 m/s98%100%
    04:00+9°0.2 mm3 m/snortheast wind, 3 m/s98%100%
    05:00+9°0.2 mm3 m/snortheast wind, 3 m/s98%100%
    06:00+9°0.7 mm3 m/snortheast wind, 3 m/s98%100%
    07:00+9°0.7 mm3 m/snortheast wind, 3 m/s98%100%
    08:00+9°0.7 mm3 m/snortheast wind, 3 m/s98%100%
    09:00+10°0.3 mm3 m/seast wind, 3 m/s98%100%
    10:00+10°0.3 mm3 m/seast wind, 3 m/s98%100%
    11:00+10°0.3 mm3 m/seast wind, 3 m/s98%100%
    12:00+10°1.0 mm3 m/seast wind, 3 m/s98%100%
    13:00+10°1.0 mm3 m/seast wind, 3 m/s99%100%
    14:00+11°1.0 mm2 m/seast wind, 2 m/s99%100%
    15:00+11°0.2 mm2 m/seast wind, 2 m/s99%100%
    16:00+12°0.2 mm3 m/seast wind, 3 m/s99%100%
    17:00+12°0.2 mm3 m/seast wind, 3 m/s99%100%
    18:00+13°—3 m/seast wind, 3 m/s99%100%
    19:00+13°—3 m/seast wind, 3 m/s99%100%
    20:00+13°—3 m/seast wind, 3 m/s99%100%
    21:00+14°0.1 mm2 m/seast wind, 2 m/s99%100%
    22:00+14°0.1 mm2 m/ssoutheast wind, 2 m/s98%100%
    23:00+14°0.1 mm3 m/ssoutheast wind, 3 m/s98%100%
    +14°+12°+9°
    Weather throughout the day
    0:006:0012:0018:0023:00

    Sun and moon

    Tuesday, September 8
    The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
    DaylightMoon above the horizon
    Sunrise
    06:54
    Sunset
    19:58
    Day length
    13 h 4 min
    Sunshine hours
    0 min
    UV index
    0
    low
    Moon
    Waning crescent
    Moonrise
    03:16
    Moonset
    18:21

    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

    +11% in the windowTuesday, September 8
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Minor02:46–03:46Moonrise
    • Major09:57–11:57Moon overhead
    • Minor17:51–18:51Moonset
    • Major22:23–00:00Moon 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
    887 m³/s

    USGS gauge OTTAWA RIVER AT BRITANNIA, 19 km away · measured 2026-09-02 23:35 · 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%