What is the current water level of Lake Koshkonong?

As of Aug 31, 2026, 3:00 AM (UTC-05:00), the pool elevation was 776.57 ft (datum NAVD88), provisional and subject to revision. See the trend chart above for the recent direction.

Is Lake Koshkonong full right now?

Its managing agency does not publish a %-of-conservation-pool-full figure for this lake, so we show the bare level rather than estimate one.

Lake Koshkonong water level — Wisconsin

Wisconsin · USGS · reading Aug 31, 2026, 3:00 AM (UTC-05:00) Provisional

Lake Koshkonong in Wisconsin was last measured at 776.57 ft (datum NAVD88), as of Aug 31, 2026, 3:00 AM (UTC-05:00) (USGS Water Services). Over its recent trend window the level has been rising (+0.1 ft). This reading is provisional and subject to revision.

Current reading Lake Koshkonong · Wisconsin

Pool elevation: 776.57 ft
% of conservation pool full: Not reported
Storage: Not reported
Recent trend: ↑Rising

Recent trend

Readings this station published between Jun 2, 2026 and Aug 31, 2026 — a 89-day window — downsampled for display.

Data: USGS Water Services (waterservices.usgs.gov) and USACE CWMS Data (cwms-data.usace.army.mil), retrieved 2026-08-31. Both public domain (a work of the U.S. Government, 17 U.S.C. §105).

Not for navigation or safety decisions (why →)

Source: USGS site 05427235, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for this lake →

About this gauge's record

This site's drainage basin covers approximately 2,560 sq mi of contributing watershed.

How Lake Koshkonong compares nearby

3 of 6 nearby lakes with a current trend are also rising right now.

Nearby lakes

The six nearest published lakes by centroid distance (great-circle) — cross-state neighbors included.

Lakes nearest to Lake Koshkonong, with current level and distance.
Lake	State	Level	Distance
North Lake	WI	907.09 ft	28 km
Lake Kegonsa at Barber Drive	WI	843.29 ft	30 km
Lake Waubesa at Mc Farland	WI	844.78 ft	34 km
Lake Monona at Madison	WI	845.03 ft	44 km
Lake Mendota at Madison	WI	849.96 ft	44 km
Geneva Lake at Lake Geneva	WI	864.35 ft	51 km

Frequently asked questions

What is the current water level of Lake Koshkonong?: As of Aug 31, 2026, 3:00 AM (UTC-05:00), the pool elevation was 776.57 ft (datum NAVD88), provisional and subject to revision. See the trend chart above for the recent direction.
Is Lake Koshkonong full right now?: Its managing agency does not publish a %-of-conservation-pool-full figure for this lake, so we show the bare level rather than estimate one.
Where does this data come from?: From USGS site 05427235, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00).

More in Wisconsin

See every lake tracked in Wisconsin, or read the methodology behind these figures.