Green Lake
Green Lake County, Wisconsin · WBIC 146100
This lake has fishing rules that differ from the standard ones for its area. Check the official rules before you fish. Official regulations
Size
7,346 acres
Max depth
236 ft
DNR lake type
Complex, Two Story
Water clarity
9.5 ft
Moderate, measured Sep 2026
A deep lake type that can hold a cold layer below the warm surface in summer. This describes the lake type in general, not this lake in particular.
Outline
Numbered dots are boat landings; tap one for directions. The list below has the same numbers. Drawn from the DNR's 24K hydrography (surveyed 1984), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
9.5 ft Secchi depthModerate
Last measured Sep 23, 2026. 639 readings on record, 1986 to 2026.
Typical summer clarity (June to September): 15.5 ft, clear, from 107 readings (2012 to 2026).
Secchi depth is how far down a white disk stays visible. A bigger number means clearer water. Clear means a Secchi depth of 10 feet or more, moderate 5 to 10 feet, low under 5 feet.
Wisconsin DNR water monitoring (volunteer and staff), via the Water Quality Portal; station Green Lake - West Basin - Deep Hole (USGS 434756089020500). Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 8 (Mar 31 to Apr 12)
- Surface reaches 48°Fabout May 19 (May 18 to May 25)
- Surface reaches 64°Fabout May 31 (May 27 to Jun 4)
- June surface74°F, usually 71 to 75°F
- July surface81°F, usually 79 to 82°F
- August surface78°F, usually 75 to 79°F
Forms a warm top layer around May 14, lasting about 188 days.
A computer model of this lake's typical weather and water, built from 15 years, 2005 to 2019. Ranges show the middle half of years. The model was calibrated against measured temperatures for this lake. It is an estimate, not a measurement.
Modeled: U.S. Geological Survey lake temperature data release (doi:10.5066/P9CA6XP8).
Today at the lake
Forecast: National Weather Service (no endorsement implied). Sunrise, sunset and moon phase are calculated. The moon phase can be a day off.
Stocking history
- Brown Troutlast stocked 2025 (adult (broodstock), large fingerling and yearling); stocked in 9 years since 2010
- Lake Troutlast stocked 2025 (yearling); stocked in 15 years since 2010
- Muskellungelast stocked 2025 (large fingerling, small fingerling and yearling); stocked in 13 years since 2010
- Walleyelast stocked 2024 (fry); stocked in 14 years since 2010
- Rainbow Troutlast stocked 2020 (large fingerling and yearling); stocked in 4 years since 2010
- Northern Pikelast stocked 2010 (large fingerling); stocked in 1 year since 2010
Stocking shows what was added to the lake, not what is in it now.
Wisconsin DNR annual fish stocking summary. Checked Oct 23, 2026.
Fish recorded near this lake
- Black Crappie Pomoxis nigromaculatus2025; 1 record
- Bluegill Lepomis macrochirus2025 to 2026; 4 records
- Cisco Coregonus artedi1909; 1 record
- Common Carp Cyprinus carpio2025 to 2026; 2 records
- Common Shiner Luxilus cornutus2025; 1 record
- Emerald Shiner Notropis atherinoides2025; 1 record
- Golden Shiner Notemigonus crysoleucas2025 to 2026; 2 records
- Green Sunfish Lepomis cyanellus2026; 1 record
- Logperch Percina caprodes2025; 1 record
- Northern Pike Esox lucius2026; 1 record
- Pumpkinseed Lepomis gibbosus2025; 2 records
- Rock Bass Ambloplites rupestris2025; 1 record
- Smallmouth Bass Micropterus dolomieu2025; 1 record
- White Sucker Catostomus commersonii2025; 1 record
- Yellow Bullhead Ameiurus natalis2025; 1 record
- Yellow Perch Perca flavescens2025 to 2026; 3 records
Recorded in open fish survey and museum records (GBIF). A record shows a fish was found near this lake in that year, not that it is there now, and says nothing about how many. Most coordinates are rounded to about 1 km, so a record is attached only when one lake is the clear match.
Open fish survey and museum records from GBIF; datasets are listed on the sources page. Checked Oct 23, 2026.
Boat landings
- 1Canal Street LaunchBoat ramp · Concrete Plank surface · City
Directions - 2Deacon Mills Park Boat RampBoat ramp · City
Directions - 3Hattie Sherwood Park Boat LaunchBoat ramp · Gravel surface · City
Directions - 4Duerings LandingBoat ramp · Gravel surface · City
Directions - 5Sunset Park Boat RampBoat ramp · Concrete Panels surface · Accessible features · County
Directions - 6Horners LandingBoat ramp · Concrete surface · County
Directions - 7Dodge Memorial Park AccessBoat ramp · Concrete Panels surface · County
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
Water level and flow
- GREEN LAKE AT GREEN LAKE, WIGage height
- GREEN LAKE SW INLET @ CT HIGHWY K NR GREEN LAKE,WIGage height, Discharge
- GREEN LAKE INLET AT CT HIGHWAY A NR GREEN LAKE, WIGage height, Discharge
- HILL CREEK NR MOUTH NEAR GREEN LAKE, WIGage height, Discharge
- SILVER CREEK AT SPAULDING ROAD NEAR GREEN LAKE, WIGage height, Discharge
- WHITE CREEK AT SPRING GROVE ROAD NR GREEN LAKE, WIGage height, Discharge
U.S. Geological Survey gauges at or beside this lake. Readings are provisional and fetched when you open the page.
More lakes in Green Lake County
- Twin Lakes0.9 miles away
- Little Twin Lake1.0 miles away
- Spring Lake1.4 miles away
- Puchyan Millpond4.0 miles away
- Little Green Lake4.6 miles away
- Dog Lake7.8 miles away
Where this comes from
- Size, depth and lake typeWisconsin DNR lake classifications, checked Oct 23, 2026
- OutlineWisconsin DNR 24K hydrography, checked Oct 23, 2026
- Stocking historyWisconsin DNR annual fish stocking summary, checked Oct 23, 2026
- Regulations linkWisconsin DNR fishing regulations (linked, not restated), checked Oct 23, 2026
- Boat landingsWisconsin DNR public boat access sites, checked Oct 23, 2026
- Water clarityWisconsin DNR water monitoring, via the Water Quality Portal, checked Oct 23, 2026
- Typical-year temperatureU.S. Geological Survey lake temperature model (modeled estimate), checked Oct 23, 2026
- Fish recordedOpen fish survey and museum records, via GBIF, checked Oct 23, 2026
- Water level and flowU.S. Geological Survey gauges (readings are live), checked Oct 23, 2026
- VHS statusWisconsin DNR VHS status by watershed, checked Oct 24, 2026
- Depth map linkWisconsin DNR lake maps list, checked Oct 24, 2026
See data sources for what each source covers, and about for how the numbers are matched to lakes.
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