Townsend Flowage
Oconto County, Wisconsin · WBIC 465000
This lake has fishing rules that differ from the standard ones for its area. Check the official rules before you fish. Official regulations
Size
476 acres
Max depth
30 ft
DNR lake type
Simple, Warm, dark water color
Water clarity
10 ft
Clear, measured Nov 2024
A warm-water lake type: the DNR groups it with lakes that warm up through 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 1991), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
10 ft Secchi depthClear
Last measured Nov 7, 2024. 41 readings on record, 1996 to 2024.
Typical summer clarity (June to September): 10 ft, clear, from 13 readings (2014 to 2019).
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 TOWNSEND FLOWAGE - DEEP SPOT. Checked Oct 23, 2026.
Water temperature
Last measured Mar 11, 2025, too long ago to show as the current temperature.
A typical year Modeled estimate
- Ice goes outabout Apr 19 (Apr 7 to Apr 25)
- Surface reaches 48°Fabout May 1 (Apr 21 to May 8)
- Surface reaches 64°Fabout May 25 (May 19 to May 29)
- June surface71°F, usually 70 to 73°F
- July surface77°F, usually 76 to 78°F
- August surface74°F, usually 72 to 75°F
Forms a warm top layer around May 27, lasting about 102 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
- Muskellungelast stocked 2021 (large fingerling); stocked in 10 years since 2010
- Walleyelast stocked 2020 (large fingerling and small fingerling); stocked in 6 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
- Bluntnose Minnow Pimephales notatus1926; 1 record
- Brook Trout Salvelinus fontinalis1926; 1 record
- Brown Trout Salmo trutta1926; 1 record
- Common Shiner Luxilus cornutus1926; 1 record
- Creek Chub Semotilus atromaculatus1926; 1 record
- Eastern Blacknose Dace Rhinichthys atratulus1926; 1 record
- Iowa Darter Etheostoma exile1926; 1 record
- Johnny Darter Etheostoma nigrum1926; 1 record
- Largemouth Bass Micropterus salmoides1926; 1 record
- Longnose Dace Rhinichthys cataractae1926; 1 record
- White Sucker Catostomus commersonii1926; 1 record
- Yellow Perch Perca flavescens1926; 1 record
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
- 1Townsend Flowage AccessBoat ramp · Gravel surface · Township
Directions - Townsend Flowage AccessBoat ramp · Township
Some landings are matched to this lake by name only, because the DNR list gives no location for them. They have no pin.
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
More lakes in Oconto County
- Smoke Lake1.1 miles away
- Glocke Lake1.3 miles away
- Little Pickerel Lake1.5 miles away
- Surprise Lake1.5 miles away
- Horn Lake1.7 miles away
- Horn Shaped Lake1.7 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
- 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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