Perch Lake
St Croix County, Wisconsin · WBIC 2488300
The DNR lists this lake's watershed (Big Marine Lake-Saint Croix River) as suspect or infected with VHS, a fish virus. The listing covers the watershed, not a test of this lake. About VHS
Size
43 acres
Max depth
63 ft
DNR lake type
Simple, Two Story
Water clarity
13.5 ft
Clear, measured Sep 2017
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 1974), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
13.5 ft Secchi depthClearOlder reading
Last measured Sep 6, 2017. 96 readings on record, 1991 to 2017.
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 Perch Lake at Deepest Point. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 10 (Apr 1 to Apr 23)
- Surface reaches 48°Fabout Apr 18 (Apr 13 to Apr 26)
- Surface reaches 64°Fabout May 15 (May 9 to May 21)
- June surface73°F, usually 72 to 74°F
- July surface79°F, usually 78 to 80°F
- August surface76°F, usually 75 to 78°F
Forms a warm top layer around Apr 15, lasting about 205 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.
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
- Rainbow Troutlast stocked 2025 (yearling); stocked in 16 years since 2010
- Brown Troutlast stocked 2011 (adult (broodstock)); 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
- Bluegill Lepomis macrochirus2004; 2 records
- Bluntnose Minnow Pimephales notatus2004; 1 record
- Brown Bullhead Ameiurus nebulosus2004; 1 record
- Green Sunfish Lepomis cyanellus2004; 2 records
- Largemouth Bass Micropterus salmoides2004; 2 records
- Pumpkinseed Lepomis gibbosus2004; 2 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
- 1Homestead Parklands Boat Launch (listed under St. Croix County)Boat ramp · Gravel surface · Township
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
Fishing from shore
- PERCH LAKE SHORE FISHING STATIONS AND PIERDirections · DNR details
Wisconsin DNR shore fishing sites. Checked Oct 24, 2026.
More lakes in St Croix County
- Little Falls Lake2.4 miles away
- Bass Lake2.6 miles away
- Dry Dam Lake3.8 miles away
- Mallalieu Lake4.9 miles away
- Three Lakes5.6 miles away
- Riverdale Flowage6.8 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
- VHS statusWisconsin DNR VHS status by watershed, checked Oct 24, 2026
- Shore fishing sitesWisconsin DNR shore fishing sites, 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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