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United States / Virginia / River Flat Branch

Bite forecast: River Flat Branch

  • length 0 mi
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Best fishing days for the next week

  1. WednesdaySeptember 9weather-based forecast
    56/100medium activity

    Clear: 57–90 °F

  2. ThursdaySeptember 10weather-based forecast
    56/100medium activity

    Partly cloudy: 63–93 °F

  3. TuesdaySeptember 8weather-based forecast
    53/100medium activity

    Cloudy: 52–81 °F

Nearby towns

  • Fairfax9 mi

River Flat Branch (Virginia) — a popular fishing spot. About 0 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.

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Nearby rivers

  • Cub Run3 mi
  • Bull Run4 mi
  • Popes Head Creek4 mi
  • Little Bull Run6 mi
  • Occoquan River8 mi

Nearby water bodies

  • ReservoirUpper Occoquan Polish Pond1 mi
  • LakeSumner Lake1 mi
  • PondFlat Branch Pond2 mi
  • LakeSouth Twin Lake4 mi
  • LakeNorth Twin Lake4 mi
  • PondCotting Lake4 mi
  • PondPreservation Easement5 mi
  • LakeChantilly Lake5 mi
  • PondHappy Pond5 mi
  • ReservoirWoodover Farms Lake7 mi

Bite calendar

7–Sep 13
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Bite activity:highmediumlowslow
Based on:weatherseasonal
What is a bite calendar?
Striped bassSmallmouth bassWalleyeWhite bassBlack crappieBrook troutWhite crappieBlue catfishBluegillCarpChannel catfishFlathead catfishLargemouth bassRainbow troutSpotted bass

Black crappie

7/10 · Good

Hourly activity

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

The bite is strong — fish are active. 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

Worth going — it's a productive day.

How this forecast is calculated

Why this forecast

The computed water temperature is around 71 °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 °F71 °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 dropping 0.24 inHg over the day — fish are usually more active ahead of a weather change.

Pressure through the day, 0.24 inHg change
00:00 · 30.0723:00 · 29.83 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

10 SepThursday, September 10
+88°

Partly cloudy · feels like +87°

Low / high
+63°…+94°
Precipitation
0.00 in
Wind
12 mph WNW
Cloud cover
48%
Humidity
43%
Pressure
29.95 inHg
00:00+66°—3 mphsouthwest wind, 3 mph73%48%
01:00+65°—3 mphsouthwest wind, 3 mph75%47%
02:00+65°—3 mphwest wind, 3 mph77%41%
03:00+64°—3 mphwest wind, 3 mph79%28%
04:00+64°—4 mphwest wind, 4 mph80%12%
05:00+63°—4 mphwest wind, 4 mph81%2%
06:00+63°—4 mphwest wind, 4 mph83%5%
07:00+63°—3 mphwest wind, 3 mph84%15%
08:00+65°—3 mphwest wind, 3 mph82%23%
09:00+71°—5 mphwest wind, 5 mph73%24%
10:00+78°—8 mphwest wind, 8 mph60%24%
11:00+84°—11 mphwest wind, 11 mph49%30%
12:00+88°—12 mphwest wind, 12 mph43%48%
13:00+90°—13 mphwest wind, 13 mph39%72%
14:00+92°—13 mphwest wind, 13 mph37%90%
15:00+93°—14 mphwest wind, 14 mph35%98%
16:00+94°—14 mphwest wind, 14 mph34%100%
17:00+92°—13 mphwest wind, 13 mph36%100%
18:00+89°—10 mphwest wind, 10 mph43%96%
19:00+84°—6 mphwest wind, 6 mph53%89%
20:00+79°—3 mphsouthwest wind, 3 mph61%85%
21:00+77°—2 mphsouthwest wind, 2 mph66%90%
22:00+74°—3 mphwest wind, 3 mph70%98%
23:00+73°—3 mphwest wind, 3 mph74%100%
+94°+78°+63°
Weather throughout the day
0:006:0012:0018:0023:00

Sun and moon

Thursday, September 10
The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
DaylightMoon above the horizon
Sunrise
06:55
Sunset
19:33
Day length
12 h 38 min
Sunshine hours
12 h 10 min
UV index
5
moderate
Moon
Waning crescent
Moonrise
06:04
Moonset
19:06

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 windowThursday, September 10
Feeding windows on the day scale, local time0:0012:0024:00
Major periodsMinor periods
  • Major00:00–01:17Moon underfoot
  • Minor05:34–06:34Moonrise
  • Major11:41–13:41Moon overhead
  • Minor18:36–19:36Moonset

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?