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Forecast
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© 2026·AI-powered bite forecast
0.1.0+2161 · b4069346

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United States / Virginia / Occoquan River

Bite forecast: Occoquan River

  • length 29 mi
Loading map…

Best fishing days for the next week

  1. MondaySeptember 7weather-based forecast
    52/100medium activity

    Partly cloudy: 52–79 °F

Nearby rivers

  • Popes Head Creek5 mi
  • Hooes Run5 mi

Nearby water bodies

  • ReservoirOccoquan Reservoir1 mi
  • LakeWestridge Lake3 mi
  • PondCotting Lake4 mi
  • ReservoirLake Omiscol4 mi
  • ReservoirWoodover Farms Lake5 mi
  • ReservoirBurke Lake5 mi
  • LakeHeron Pond5 mi
  • ReservoirLake Jackson6 mi
  • ReservoirLake Mercer6 mi
  • ReservoirLake Barton6 mi

Occoquan River (Virginia) — a spot well known among anglers. About 46 km long. Nearest town — Fairfax. See when the bite is best: hourly fish activity for the days ahead, computed from the weather, pressure, and season.

TuesdaySeptember 8weather-based forecast
52/100medium activity

Partly cloudy: 57–84 °F

  • ThursdaySeptember 3weather-based forecast
    49/100medium activity

    Clear: 75–91 °F

  • Nearby towns

    • Fairfax9 mi
    Loading map…

    Catches

    Recorded 9 catches here. Most commonly caught: Largemouth bass, Black crappie, Muskellunge. Peak season: February–September.

    • Largemouth bass — Occoquan River, Feb 01, 2021
      3
      Largemouth bass
      Occoquan River
      30 °F13 mph
      Feb 01, 2021
    • Largemouth bass — Occoquan River, Jul 17, 2019
      3
      Largemouth bass
      Occoquan River
      90 °F4 mph
      Jul 17, 2019
    • Largemouth bass — Belmont Bay, Jun 17, 2019
      3
      Largemouth bass
      Belmont Bay
      88 °F4 mph
      Jun 17, 2019
    • Largemouth bass — Occoquan River, Apr 21, 2019
      3
      Largemouth bass
      Occoquan River
      63 °F4 mph
      Apr 21, 2019
    • Largemouth bass — Occoquan River, Apr 19, 2019
      3
      Largemouth bass
      Occoquan River
      73 °F11 mph
      Apr 19, 2019
    • Largemouth bass — Occoquan River, Apr 12, 2019
      3
      Largemouth bass
      Occoquan River
      68 °F9 mph
      Apr 12, 2019
    • Muskellunge
      Occoquan River
      77 °F2 mph
      Sep 07, 2020
    • Black crappie
      Occoquan River
      63 °F16 mph
      Apr 27, 2019

    Bite calendar

    Wednesday, September 2

    Aug 31 – Sep 6
    Mon
    Tue
    Wed
    Thu
    Fri
    Sat
    Sun
    Bite activity:highmediumlowslow
    Based on:weatherseasonal
    What is a bite calendar?
    Black crappieSmallmouth bassStriped bassWhite bassWalleyeWhite crappieBrook troutLargemouth bassBlue catfishBluegillCarpChannel catfishFlathead catfishRainbow troutSpotted bass

    Black crappie

    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 dropping — this usually boosts the bite.

    Peak bite hours

    Best time — 06:00–08:00 (dawn bite) and 19:00–21:00 (dusk bite).

    Tactics

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

    Lures

    In clear water, natural colors work best: small jig or minnow bait.

    Gear

    It's a hot day — a hat, sunglasses, and plenty of water are a must.

    Summary

    An average day — best chances during peak windows.

    How this forecast is calculated

    Why this forecast

    The computed water temperature is around 74 °F — inside the 57–75 °F comfort range for Black crappie, so baseline activity is high.

    Computed water temperature by month; the green band is the 57–75 °F comfort rangecomfort 57–75 °F74 °F
    JFMAMJJASOND

    Black crappie 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 Black crappie feeds0:0012:0024:00

    Pressure is flat: it moves no more than 0.00 inHg over the day, so the weather isn't shifting today's bite.

    Pressure through the day, 0.00 inHg change
    00:00 · 30.0123:00 · 30.01 inHg

    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 Black crappie here.

    JFMAMJJASOND

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

    2 SepWednesday, September 2
    +87°

    Clear · feels like +94°

    Low / high
    +73°…+91°
    Precipitation
    0.00 in
    Wind
    2 mph SW
    Cloud cover
    0%
    Humidity
    50%
    Pressure
    30.08 inHg
    00:00+76°—5 mphnorthwest wind, 5 mph63%0%
    01:00+75°—6 mphwest wind, 6 mph63%0%
    02:00+75°—6 mphnorthwest wind, 6 mph62%0%
    03:00+74°—6 mphnorthwest wind, 6 mph64%0%
    04:00+74°—5 mphnorthwest wind, 5 mph62%0%
    05:00+73°—1 mphwest wind, 1 mph61%0%
    06:00+73°—2 mphwest wind, 2 mph61%0%
    07:00+73°—1 mphnorthwest wind, 1 mph61%0%
    08:00+75°—2 mphnorthwest wind, 2 mph61%0%
    09:00+79°—1 mphsouthwest wind, 1 mph62%0%
    10:00+82°—2 mphsouthwest wind, 2 mph59%0%
    11:00+85°—3 mphsouth wind, 3 mph54%0%
    12:00+87°—2 mphsouthwest wind, 2 mph50%0%
    13:00+88°—5 mphwest wind, 5 mph46%0%
    14:00+89°—6 mphwest wind, 6 mph42%0%
    15:00+90°—5 mphwest wind, 5 mph40%0%
    16:00+91°—4 mphwest wind, 4 mph38%0%
    17:00+90°—5 mphwest wind, 5 mph38%1%
    18:00+90°—4 mphwest wind, 4 mph40%0%
    19:00+87°—3 mphsouthwest wind, 3 mph45%0%
    20:00+84°—5 mphwest wind, 5 mph46%0%
    21:00+83°—6 mphwest wind, 6 mph48%17%
    22:00+82°—7 mphnorthwest wind, 7 mph46%19%
    23:00+82°—7 mphnorthwest wind, 7 mph47%16%
    +91°+82°+73°
    Weather throughout the day
    0:006:0012:0018:0023:00

    Sun and moon

    Wednesday, September 2
    The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
    DaylightMoon above the horizon
    Sunrise
    06:48
    Sunset
    19:45
    Day length
    12 h 57 min
    Sunshine hours
    12 h
    UV index
    6
    high
    Moon
    Waning gibbous
    Moonrise
    22:18
    Moonset
    12:36

    The day is 2 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 windowWednesday, September 2
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Major04:03–06:03Moon overhead
    • Minor12:06–13:06Moonset
    • Major16:30–18:30Moon underfoot
    • Minor21:48–22:48Moonrise

    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?

    BiteGuide·From anglers’ reports

    What actually worked on this water

    Based on 9 verified catchesPeriod: 2019–2021

    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
    621
    Largemouth bassBlack crappieMuskellunge
    By fish species
    ValueCatchesShare
    Largemouth bass667%
    Black crappie222%
    Muskellunge111%

    By month

    vertical axis — number of catches

    035
    15111
    FebAprJunJulSep
    By month
    ValueCatchesShare
    Feb111%
    Apr556%
    Jun111%
    Jul111%
    Sep111%

    Air temperature, °F

    vertical axis — number of catches

    023
    12312
    2359687786
    Air temperature, °F
    ValueCatchesShare
    23–30 °F111%
    59–66 °F222%
    68–75 °F333%
    77–84 °F111%
    86–93 °F222%

    Pressure, inHg

    vertical axis — number of catches

    035
    351
    29.7229.9230.12
    Pressure, inHg
    ValueCatchesShare
    29.72–29.88 inHg333%
    29.92–30.08 inHg556%
    30.12–30.28 inHg111%

    Wind direction

    vertical axis — number of catches

    035
    1521
    SESWNW
    Wind direction
    ValueCatchesShare
    SE111%
    S556%
    W222%
    NW111%

    Wind speed, mph

    vertical axis — number of catches

    024
    1422
    04913
    Wind speed, mph
    ValueCatchesShare
    0–2 mph111%
    4–7 mph444%
    9–11 mph222%
    13–16 mph222%