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Forecast
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United States / Oregon / Mompano Reservoir

Bite forecast: Mompano Reservoir

  • 55 acres
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Best fishing days for the next week

  1. TuesdaySeptember 8weather-based forecast
    81/100high activity

    Clear: 46–70 °F

  2. SundaySeptember 6weather-based forecast
    74/100high activity

    Clear: 46–70 °F

  3. ThursdaySeptember 3weather-based forecast
    68/100high activity

    Cloudy: 39–52 °F

Mompano Reservoir (Oregon) — a popular fishing spot. About 22 ha in area. Nearby towns: Oregon City, Lake Oswego and Milwaukie. See when the bite is best: hourly fish activity for the days ahead, computed from the weather, pressure, and season.

Nearby towns

  • Oregon City6 mi
  • Lake Oswego11 mi
  • Milwaukie11 mi

Nearby rivers

  • Clear Creek4 mi

Nearby water bodies

  • ReservoirMint Lake2 mi
  • ReservoirBriscoe Reservoir2 mi
  • ReservoirBull Frog Lake4 mi
  • ReservoirWillamette Falls Hydroelectric Power Reservoir6 mi
  • LakeClackamette Cove6 mi
  • ReservoirC C Porter Dam7 mi
  • ReservoirLake Leona7 mi
  • ReservoirHillside Reservoir8 mi
  • ReservoirHorning Reservoir8 mi
  • LakeHershiser Reservoir8 mi
Loading map…

Bite calendar

7–Sep 13
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Bite activity:highmediumlowslow
Based on:weatherseasonal
What is a bite calendar?
Coho salmonYellow perchBluegillBrook troutCutthroat troutLargemouth bassSmallmouth bassWalleyeWhitefishChannel catfishSteelheadRainbow troutBlack crappieChinook salmonLake trout

Black crappie

6/10 · Fair

Hourly activity

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

The bite is strong — fish are active. Pressure is rising — activity tends to be more subdued.

Peak bite hours

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

Tactics

Look for drop-offs and gaps in the weeds, retrieve slowly, lingering over promising spots.

Lures

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

Gear

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

Summary

Worth going — it's a productive day.

How this forecast is calculated

Why this forecast

The computed water temperature is around 62 °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 °F62 °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 0.06 inHg over the day — fish are usually more active ahead of a weather change.

Pressure through the day, 0.06 inHg change
00:00 · 30.0923:00 · 30.03 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

8 SepTuesday, September 8
+64°

Clear · feels like +60°

Low / high
+45°…+69°
Precipitation
0.00 in
Wind
7 mph SSW
Cloud cover
0%
Humidity
35%
Pressure
30.08 inHg
00:00+48°—6 mphnorthwest wind, 6 mph92%71%
01:00+47°—5 mphnorthwest wind, 5 mph94%74%
02:00+47°—5 mphwest wind, 5 mph95%70%
03:00+46°—4 mphwest wind, 4 mph95%52%
04:00+45°—4 mphwest wind, 4 mph95%26%
05:00+45°—4 mphwest wind, 4 mph92%7%
06:00+46°—3 mphwest wind, 3 mph87%0%
07:00+48°—2 mphsouthwest wind, 2 mph79%0%
08:00+50°—3 mphsouthwest wind, 3 mph71%0%
09:00+54°—4 mphsouth wind, 4 mph61%0%
10:00+58°—5 mphsouth wind, 5 mph49%0%
11:00+61°—6 mphsouthwest wind, 6 mph40%0%
12:00+64°—7 mphsouthwest wind, 7 mph35%0%
13:00+66°—7 mphsouthwest wind, 7 mph33%0%
14:00+67°—7 mphsouthwest wind, 7 mph31%0%
15:00+69°—6 mphsouthwest wind, 6 mph29%0%
16:00+69°—5 mphsouthwest wind, 5 mph28%1%
17:00+69°—4 mphsouth wind, 4 mph29%2%
18:00+66°—2 mphsouth wind, 2 mph34%3%
19:00+61°—1 mpheast wind, 1 mph40%4%
20:00+58°—3 mphnortheast wind, 3 mph46%5%
21:00+56°—4 mphnortheast wind, 4 mph49%4%
22:00+55°—4 mphnortheast wind, 4 mph51%3%
23:00+55°—4 mphnortheast wind, 4 mph52%2%
+69°+57°+45°
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
06:31
Sunset
19:23
Day length
12 h 52 min
Sunshine hours
12 h 11 min
UV index
6
high
Moon
Waning crescent
Moonrise
03:34
Moonset
18:33

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

+12% in the windowTuesday, September 8
Feeding windows on the day scale, local time0:0012:0024:00
Major periodsMinor periods
  • Minor03:04–04:04Moonrise
  • Major10:12–12:12Moon overhead
  • Minor18:03–19:03Moonset
  • Major22:38–00:00Moon 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?