How many lakes and reservoirs in Wisconsin are tracked here?

14, of which 14 report a current pool-elevation reading. The rest report storage only, or lack a fresh reading and are not published.

Which Wisconsin lakes report a %-full figure?

None of Wisconsin's lakes in this dataset currently have a source-provided %-full figure — we show the bare level rather than estimate one.

Where does the data come from?

USGS Water Services and USACE CWMS Data, both public domain. See the methodology page for the exact endpoints and update cadence.

Wisconsin lake & reservoir water levels

14 lakes tracked · 14 with a current elevation reading · USGS Water Services + USACE CWMS Data

Wisconsin has 14 lakes and reservoirs tracked here — 14 with a current elevation reading, from USGS Water Services and USACE CWMS Data. Sort the table by level, storage, %-full, or trend, then open any lake for its full elevation-with-datum, trend sparkline, storage, and source-and-vintage stamp. Figures are provisional readings for reference — not for navigation or safety decisions.

Statewide totals Wisconsin · USGS + USACE

Lakes tracked: 14
With elevation reading: 14
With %-full figure: 0

All Wisconsin lakes

Every lake tracked in Wisconsin. Click a column heading to sort, or filter by name. Elevation lakes are listed before storage-only lakes; a missing figure always shows "not reported," never an estimate.

Filter lakes

Wisconsin lakes, elevation lakes first, by name.
		Datum			Trend
Anvil Lake	1,692.67	NAVD88	—	—	↓Falling
Eau Galle Dam	940.22	NGVD29	—	—	↓Falling
Geneva Lake at Lake Geneva	864.35	NAVD88	—	—	↓Falling
Lac Vieux Desert	1,680.59	NAVD88	—	—	↓Falling
Lake Huron	1,092.96	NAVD88	—	—	→Steady
Lake Kegonsa at Barber Drive	843.24	NGVD29	—	—	↓Falling
Lake Koshkonong	776.53	NAVD88	—	—	→Steady
Lake Mendota at Madison	849.84	NGVD29	—	—	↓Falling
Lake Monona at Madison	844.91	NGVD29	—	—	↓Falling
Lake Waubesa at Mc Farland	844.68	NGVD29	—	—	↓Falling
Lake Winnebago	747.18	NAVD88	—	—	→Steady
Lake Winnebago at Oshkosh	747.04	NAVD88	—	—	→Steady
North Lake	906.89	NAVD88	—	—	↓Falling
Pleasant Lake	980.56	NAVD88	—	—	→Steady

Data: USGS Water Services (waterservices.usgs.gov) and USACE CWMS Data (cwms-data.usace.army.mil), retrieved 2026-07-14. Both public domain (a work of the U.S. Government, 17 U.S.C. §105).

Frequently asked questions

How many lakes and reservoirs in Wisconsin are tracked here?: 14, of which 14 report a current pool-elevation reading. The rest report storage only, or lack a fresh reading and are not published.
Which Wisconsin lakes report a %-full figure?: None of Wisconsin's lakes in this dataset currently have a source-provided %-full figure — we show the bare level rather than estimate one.
Where does the data come from?: USGS Water Services and USACE CWMS Data, both public domain. See the methodology page for the exact endpoints and update cadence.

Explore

Read the methodology behind these figures, or search all lakes nationally from the home page.