Lake levels
Green Lake, WI
- gauge height
- 6.59 ft
- Condition
- High for this time of year
- 7-day change
- -0.10 ft
- 30-day change
- +0.15 ft
- 1-year change
- +0.49 ft
Reading as of 2026-10-12 | the U.S. Geological Survey
- Since yesterday
- -0.01 ft
- 7-day change
- -0.10 ft
- 30-day change
- +0.15 ft
- 1-year change
- +0.49 ft
- Record high
- 8.60 ft
In brief
Green Lake's gauge read 6.59 feet on Oct 12, 2026. That is higher than 94% of October readings since 1993.
Source: U.S. Geological Survey
Gauge height above a local reference point; not elevation above sea level.
Lake level timeline
Records and averages
| Current level | 6.59 ft |
|---|---|
| Record high | 8.60 ft (2008-06-16) |
| Record low | 5.31 ft (2005-11-05) |
| Average of all readings | 6.31 ft |
| Data span | 33 years (11,887 readings) |
Level schematic
Trout stocking on Green Lake
Wisconsin DNR stocked Green Lake 6 times in 2025, 6,987,752 fish in total. BROWN TROUT and WALLEYE and MUSKELLUNGE and LAKE TROUT at LARGE FINGERLING and FRY. Wisconsin DNR's published figures for 2025, the most recent season it has confirmed, record 70,754 trout actually released here across 6 visits.
| Species | Fish | When |
|---|---|---|
| BROWN TROUT | 13,998 | None |
| WALLEYE | 6,912,000 | None |
| MUSKELLUNGE | 2,499 | None |
| LAKE TROUT | 28,378 | None |
| MUSKELLUNGE | 2,499 | None |
| LAKE TROUT | 28,378 | None |
Wisconsin DNR lists a week or a month rather than a date, and counts fish as an estimate. Full Wisconsin stocking schedule →
Frequently asked questions
Is Green Lake full right now?
As of 2026-10-12, Green Lake sits at 6.59 ft, which is high for this time of year. Over the past 30 days the level has risen 0.15 ft.
What is the water level at Green Lake today?
The most recent reading at Green Lake is 6.59 ft (2026-10-12), sourced from the U.S. Geological Survey. Readings on this page refresh automatically as the agency publishes new data.
What is the highest Green Lake has ever been?
The highest level for Green Lake in our records is 8.60 ft on 2008-06-16. The lowest is 5.31 ft on 2005-11-05. Our record covers about 33 years of readings.
Is Green Lake low for this time of year?
Compared with every October in our records, the current level is higher than 94% of them, which we classify as high for this time of year. Seasonal comparison matters more than the raw number, because most reservoirs draw down predictably through late summer and refill over winter and spring.
Why is Green Lake changing right now?
Reservoir levels move for four main reasons: rainfall and runoff into the basin, releases through the dam for downstream water supply, power generation or flood control, evaporation during hot months, and seasonal drawdown schedules set by the operating agency. Green Lake has risen 0.15 ft over the past 30 days. For the operational reason on any given week, check the U.S. Geological Survey directly.
How much has Green Lake changed over the past year?
Green Lake is +0.49 ft compared with this date last year (6.59 ft today). The full-history chart above covers 33 years, with a record high of 8.60 ft and a record low of 5.31 ft.
Download and cite
Quote this reading
Green Lake's gauge read 6.59 feet on Oct 12, 2026. That is higher than 94% of October readings since 1993.
Download the full record
green-lake-wi-water-level-history.csv
How to cite
MyWaterLevel, “Green Lake water level, 1993 to 2026,” data from U.S. Geological Survey, https://mywaterlevel.com/lake/wi/green-lake/, accessed Oct 13, 2026.
Source: the U.S. Geological Survey. All Wisconsin lake levels. Readings are provisional and may be revised. About our data and methods.