Long Lake
Waushara County, Wisconsin · WBIC 191100
The DNR lists this lake's watershed (Willow Creek-Frontal Lake Poygan) as suspect or infected with VHS, a fish virus. The listing covers the watershed, not a test of this lake. About VHS
This lake has fishing rules that differ from the standard ones for its area. Check the official rules before you fish. Official regulations
Size
272 acres
Max depth
71 ft
DNR lake type
Complex, Two Story
Water clarity
6.5 ft
Moderate, measured Aug 2019
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 1982), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
6.5 ft Secchi depthModerateOlder reading
Last measured Aug 20, 2019. 3 readings on record, 2006 to 2019.
Only a few readings are on record.
Nothing has been measured in the last 5 years, so this may not match the lake today.
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 LONG LAKE - DEEP HOLE. Checked Oct 23, 2026.
Water temperature
71.8°F surface, measured Sep 17, 2026
Measured near the surface (1 m down). A single reading, not a daily value.
A typical year Modeled estimate
- Ice goes outabout Apr 7 (Mar 31 to Apr 16)
- Surface reaches 48°Fabout Apr 25 (Apr 18 to May 5)
- Surface reaches 64°Fabout May 21 (May 10 to May 25)
- June surface73°F, usually 72 to 75°F
- July surface79°F, usually 77 to 80°F
- August surface76°F, usually 74 to 77°F
Forms a warm top layer around Apr 21, lasting about 189 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 not calibrated against measured temperatures for this lake. It is an estimate, not a measurement.
Measured: Wisconsin DNR via the Water Quality Portal (checked Oct 23, 2026). 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
- Walleyelast stocked 2025 (fall yearling, large fingerling, small fingerling and yearling); stocked in 13 years since 2010
- White Suckerlast stocked 2024 (adult, adult (broodstock), large fingerling, small fingerling and yearling); stocked in 7 years since 2010
- Black Crappielast stocked 2023 (adult, large fingerling and yearling); stocked in 5 years since 2010
- Yellow Perchlast stocked 2023 (adult, large fingerling and yearling); stocked in 8 years since 2010
- Fathead Minnowlast stocked 2022 (adult and yearling); stocked in 12 years since 2010
- Brown Troutlast stocked 2021 (adult (broodstock), fall yearling, large fingerling and yearling); stocked in 11 years 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 nigromaculatus2005; 1 record
- Bluegill Lepomis macrochirus2005; 5 records
- Bluntnose Minnow Pimephales notatus2005; 1 record
- Cisco Coregonus artedi2005; 1 record
- Largemouth Bass Micropterus salmoides2000 to 2005; 6 records
- Muskellunge Esox masquinongy2005; 1 record
- Northern Pike Esox lucius2000 to 2005; 6 records
- Pumpkinseed Lepomis gibbosus2005; 5 records
- Rock Bass Ambloplites rupestris2005; 5 records
- Smallmouth Bass Micropterus dolomieu2000 to 2005; 5 records
- Walleye Sander vitreus2000 to 2005; 6 records
- White Sucker Catostomus commersonii2005; 3 records
- Yellow Bullhead Ameiurus natalis2005; 2 records
- Yellow Perch Perca flavescens2005; 5 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
- 1Long Lake Boat RampBoat ramp · Concrete surface · Township
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
More lakes in Waushara County
- Baitenger Lake1.3 miles away
- Twin Lake1.7 miles away
- Lost Lake1.7 miles away
- Little Cedar Lake1.9 miles away
- Big Cedar Lake2.1 miles away
- Gilbert Lake2.3 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
- Measured temperatureWisconsin 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
- 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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