Fishing report
Glen Lock Lake Yellow Perch Fishing Report
Chippewa Falls, WI
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Modeled from live National Weather Service data as of Aug 28, 2026 at 4:45 PM CDT, plus solunar and sun/moon times computed in-house. This is a computed report, not an eyewitness catch report.
Glen Lock Lake has no state survey naming Yellow Perch. Its presence is an estimate inferred from 8 confirmed lakes within 40 miles — not a record of a catch.
Max depth
17 ft
Deepest measurement on record
Max depth: Stachelek et al. (2021), LAGOS-US DEPTH v1.0, Environmental Data Initiative (CC BY 4.0)
Overall rating
Yellow Perch at Glen Lock Lake — 2026-08-28
Good · 64/100Best window: 8 PM (Good · 76/100)
- Season
- Summer
- Moon
- 99% illuminated, waningFull Moon
- Est. surface temp
- 80.5°F
- Pressure
- 30.07 inHgFalling
Est. water temp
80.5°F
v1 estimate from air temperature — not a sensor reading
Above Yellow Perch's 72-76°F range
Air vs. last week
4°F warmer
82°F now vs 78°F this time last week
Measured air temperature at the nearest weather station — not water
Sun & moon
- Sunrise
- 6:23 AM
- Sunset
- 7:49 PM
- Moonrise
- 8:00 PM
- Moonset
- 6:48 AM
Sky, wind & pressureat best window · 8 PM
- Cloud cover
- 69%
- Precip chance
- 0%
- Wind
- 0 mph
- Pressure
- 30.07 inHg Falling
Species context
Why this score
Good (64/100) for Yellow Perch: water is estimated at 80.5°F, above Yellow Perch's 72-76°F optimal range. Best window: Dusk — boosts feeding activity by about 30%, one of their peak feeding windows. That hour also overlaps a minor solunar period. 30.07 inHg and falling pressure modeled flat — no change from this fish's baseline. Calm (0-5 mph) wind modeled about 10% below this fish's baseline.
What's driving the 8 PM score
Water temperature (80.5°F estimated) is doing the most for this score. The score gives up the most on water temperature — 80.5°F estimated, about 12 points below its best. The whole day is then scaled to 95% for cold front passing through.
- Water temperature · neutral
- Light window · helping
- Solunar period · neutral
- Barometric pressure · helping
- Wind · helping
Show the numbers behind this
Water temperature: 80.5°F estimated
28 of 40 pts
Optimal range 72-76°F
Well supportedWater temperature governs a cold-blooded fish's metabolism, so it is the largest term in the model (Christie & Regier 1988). The figure is a thermal-lag estimate built from forecast air temperature and the time of year — not a sensor reading, and not this lake's actual measured water.
Light window: Dusk
25 of 25 pts
Boosts feeding activity by about 30%
Well supportedLow-light feeding windows are the strongest timing signal inside a single day. How much each window is worth is this species' own cited response, sourced in its model file, not a generic curve.
Solunar period: Minor period
9 of 15 pts
Not supported by testingPeer-reviewed testing of North American freshwater fisheries found no significant relationship between solunar values, lunar phase or lunar illumination and catch rates (SN Applied Sciences, 2023) — air temperature predicted catch better than any solunar table tested. It is shown because anglers expect it, and it is shown separately so you can discount it. Its weight is under owner review.
Barometric pressure: Stable (held neutral by the front)
10 of 10 pts
Modeled flat — no change from this fish's baseline
ContestedThe barometric effect is real to most anglers but small and contested in the literature — several of the species studies cited in this model report null results — so it carries one of the smallest weights here.
Wind: Calm (0-5 mph)
7.8 of 10 pts
Modeled about 10% below this fish's baseline
Moderately supportedWind stacks forage on windward structure, but both the size and the direction of the effect depend on the species and the water, so it carries a modest weight.
Then the whole score is scaled
Season: Summer — ×1.00 (100% of the ungated score)
How catchable Yellow Perch are at this point in the year. This scales the whole score rather than competing with the factors above — a fish that is dormant this time of year cannot score well no matter how good the hour looks.
Weather front: Cold front passing through — ×0.95 (95% of the ungated score)
A multi-hour frontal pattern read from the day's forecast trajectory. Because a front IS a barometric event, it replaces the single-reading pressure factor above, which is held neutral — the barometer is never counted twice.
Those five factors add up to 79.8 of 100 points, and the two multipliers above take that to 76. The weights are v1 tuning constants under owner review — they are shown here rather than hidden so you can weigh them against your own judgement.
What this score does not know
- Water clarity. We have no source for it and do not estimate it.
- Measured water temperature. The figure in the breakdown is a model over forecast air temperature, not a reading from a buoy or a probe.
- Baitfish and forage activity.
- How much fishing pressure this water has had.
- Where the fish actually are. Depth bands are the species' published seasonal ranges, not an observation of this lake.
- What anyone actually caught. No catch reports feed this score.
Conditions read from the National Weather Service as of Aug 28, 2026 at 4:45 PM CDT. Solunar periods and sun/moon times are computed, not fetched.
When best caught
It's currently summer. Yellow Perch typically hold 10-25 ft deep this time of year — at an estimated 80.5°F, this looks like a slower time of year to target them, since water temp is outside their optimal range.
Current depth
10-25 ft
This is the seasonal depth band from the species model — relative to this species' typical behavior, not this lake's actual structure. True depth relative to this lake's bottom contours needs lake bathymetry (tracked in issue #175).
Today's solunar periods
- Major: 12:09 AM–2:09 AM
- Minor: 6:18 AM–7:18 AM
- Major: 12:31 PM–2:31 PM
- Minor: 7:30 PM–8:30 PM
Best times
When do yellow perch feed during the day?
Yellow Perch feed most actively at Dawn and Dusk, when activity runs about 30% above the daily average across all four light windows.
- Dawn1.30x
Boosts feeding activity by about 30%.
- Daytime1.00x
Has no measurable effect on feeding activity.
- Dusk1.30x
Boosts feeding activity by about 30%.
- Night0.40x
Suppresses feeding activity by about 60%.
Hour by hour
Hourly bite forecast
| Hour | Bite score | Rating | Light | Wind |
|---|---|---|---|---|
| 4 PM | 68 | Good | Day | 5 mph W |
| 5 PM | 68 | Good | Day | 5 mph W |
| 6 PM | 68 | Good | Day | 5 mph W |
| 7 PM | 70 | Good | Day | 0 mph |
| 8 PM | 76 | Good | Dusk | 0 mph |
| 9 PM | 55 | Fair | Night | 0 mph |
| 10 PM | 55 | Fair | Night | 0 mph |
| 11 PM | 55 | Fair | Night | 0 mph |
Where to find Yellow Perch right now
Typical Summer depth: 10-25 ft
Yellow Perch feed most actively at Dawn and Dusk, when activity runs about 30% above the daily average across all four light windows.
Glen Lock Lake's deepest measurement on record is 17 ft — read the depth bands above against that. It is the deepest point someone actually measured on this water, not a contour survey, so deeper water may exist and there is no depth map to check it against.
Plan a Yellow Perch trip to Glen Lock Lake
Change the date, compare species, or check the week ahead in the live tool.
Other species on record at Glen Lock Lake
FAQ
Common questions
Are there Yellow Perch in Glen Lock Lake?
Glen Lock Lake has no state survey naming Yellow Perch. Its presence is an estimate inferred from 8 confirmed lakes within 40 miles — not a record of a catch.
When do Yellow Perch bite at Glen Lock Lake?
Yellow Perch feed most actively at Dawn and Dusk, when activity runs about 30% above the daily average across all four light windows. Today's report above scores every hour of the local day against live weather for Glen Lock Lake, and shows what each input contributed alongside how well the evidence supports it.
How deep should you fish for Yellow Perch at Glen Lock Lake?
Typical Yellow Perch depth by season: Pre-Spawn 3-8 ft, Spawn 1-5 ft, Post-Spawn 5-12 ft, Summer 10-25 ft, Fall 15-30 ft, Winter 25-50 ft. These bands come from published fisheries data for the species, not from a survey of Glen Lock Lake itself.