Waters · Lakes · WI · Tue, Sep 15

Lake Winnebago water level today 2.94 ft, falling

Bite index 6/10 — Biting — get there by six.

Worth a cast.

Built from solunar, pressure, level, wind. This water has no live gauge for every reading — see the sources below.

6/10
Biting

Today's bite windows

12 AM6 AMNoon6 PM11 PM
Major
2:55 AM–4:55 AM
Moon underfoot
Minor
11:13 AM–12:13 PM
Moonrise
Major
3:19 PM–5:19 PM
Moon overhead
Minor
8:18 PM–9:18 PM
Moonset

Sunrise 6:33 AM · sunset 7:04 PM · tomorrow's first major 3:43 AM–5:43 AM · windows on every water

Solunar · computed updated 7:59 AM

Conditions right now

Water temp estimated
≈65.5°F
7-day mean of air temperature, ±4.5°F typical
computed from NOAA KOSH updated 7:40 AM
Water level
2.94ft
-0.11 ft in 24h
USGS 04082500 updated 7:00 AM
Pressure
29.92inHg
falling fast · -4.74 hPa/12h
NOAA KOSH updated 7:40 AM
Wind
16mph SSW
NOAA KOSH updated 7:40 AM
Moon
22% waxing
Solunar · computed updated 7:59 AM

What this means

Walleye
This gauge reports level but no water temperature, so depth calls stay open. Read the windows and the pressure trend instead.

Lake Winnebago level over the last 8 days

2.94 ft down 0.11 ft in 24 hours

That sits 18% of the way up the band it has held over the last 8 days, between 2.86 and 3.31 ft. Over the week it is down0.25ft.

09-07 2.86–3.31 ft 09-15
USGS 04082500 updated 7:00 AM

The week ahead

Wed 6 Biting
Thu 6 Biting
Fri 7 Biting
Sat 7 Biting
Sun 6 Biting
Mon 6 Biting
Tue 6 Biting

Forecast days carry solunar and the wind outlook. Pressure and gauge movement land the morning of.

Lake Winnebago depth and lake size

The Wisconsin DNR states this water's depth directly on its lake page; no contour map is published for Lake Winnebago.

Deepest point
21 ft
Surface area
131,939 acres

Depth data from Wisconsin Department of Natural Resources. Bathymetry changes slowly — treat it as structure, not as today's water.

Wisconsin Department of Natural Resources · reported figures

Lake Winnebago boat ramps and public fishing access

Wisconsin Department of Natural Resources lists 19 public access points on Lake Winnebago. These are the 8 closest to our gauge — the farthest one the agency lists sits 16 mi away.

Access data from Wisconsin Department of Natural Resources. Distances are straight-line from our gauge, not driving distance.

Wisconsin Department of Natural Resources · public access inventory

Before you go

A Wisconsin fishing license covers this water — $20 a year for residents. Wisconsin DNR sets the rules and is the one that counts.

What it costs, and who is exempt →

Nearby waters today

Questions people ask about Lake Winnebago

Answered from the same readings as the rest of this page. Where we have no basis for an answer, there is no entry — spot-by-spot local knowledge is not something we can claim for Lake Winnebago.

Is it worth fishing Lake Winnebago today?
6 out of 10 — biting. Worth a cast. The strongest stretch is 2:55 AM–4:55 AM. That number is worked out fresh each morning from the solunar windows, the pressure trend, the water level.
What time should you fish Lake Winnebago?
Today's major windows run 2:55 AM–4:55 AM and 3:19 PM–5:19 PM, with minor windows at 11:13 AM–12:13 PM and 8:18 PM–9:18 PM. Sunrise is 6:33 AM and sunset 7:04 PM. A major landing on first or last light is the stretch worth setting an alarm for.
What is the water temperature at Lake Winnebago?
No gauge on Lake Winnebago measures it, so this is an estimate: roughly 65.5°F, worked out from the 7-day mean of air temperature at NOAA weather station KOSH (Wittman Regional Airport). Checked against the lakes that do have a thermometer, that method lands within about 4.5°F of the real reading and was off by 8.3°F at worst. Treat it as a ballpark, not a measurement — and note the bite index above ignores it entirely, because an error that size would move the verdict as often as it would fix it.
What is the water level at Lake Winnebago right now?
2.94 ft, read at 7:00 AM from USGS station 04082500. Over 24 hours it is down 0.11 ft.
Are water levels rising or falling at Lake Winnebago?
Falling. The lake is down 0.11 ft in 24 hours and down 0.25 ft over the week. Over the last 8 days it has held between 2.86 and 3.31 ft. Every figure here is a difference between two gauge readings, not a forecast — what the level does next depends on rain and on what the dam releases.
Can you eat the fish you catch in Lake Winnebago?
That is a health question, and it is answered officially rather than by us. Wisconsin Department of Natural Resources, with the Department of Health Services publishes the fish consumption advisory covering these waters, where the Choose Wisely guidance covers every Wisconsin water, even untested ones, with tighter limits on specific lakes. Read it before you keep a meal — we give no eating advice.
Do you need a licence to fish Lake Winnebago?
Yes. A Wisconsin fishing license covers this water, required from age 16. Wisconsin DNR sets the rules and is the one that counts.
What size fish can you keep in Wisconsin?
It depends on the species, and several have slot limits rather than a simple minimum. Open to harvest today: walleye, sauger and hybrids, largemouth and smallmouth bass (a combined total), northern pike. Seasons here change mid-year by agency order, so the status is re-checked every morning.

Where these numbers come from

No one types these in by hand. If a source goes quiet, the page says so instead of showing you yesterday.