2025
WalleyeUpper Wisconsin River · Large Fingerling
9,6836.5 in average
LakeList
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Little Saint Germain Lake
Enhanced dataInteractive depth contours
Little Saint Germain LakeVilas County, WI
Contours load with map Access
Interactive depth contours5-foot typical interval · Sonar-derived depth (C-MAP Genesis) · Gaps interpolated · Not for navigation
Source: C-MAP Genesis community sonar (derived)high confidence · QA passed · Select a contour to inspect its mapped depthDepths decoded from C-MAP Genesis Social Map community sonar recordings (used with permission), covering 66% of the lake. Small gaps between recordings are smoothly connected; larger unrecorded areas follow the lake's depth model calibrated to the DNR-documented 53-ft maximum depth. More accurate than a pure model, but still an estimate. Not for navigation.LakeList assistant
Plan your lake day
Fishing spots, food, lodging, marinas, and rentals around Little Saint Germain Lake.
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Fishing
Fishing at Little Saint Germain Lake
Fishery
Notable species
Northern PikeLargemouth BassMuskyPanfishWalleyeSmallmouth Bass
Angler reports · Fishbrain
What anglers catch here
Anglers have logged 196 catches on Little Saint Germain Lake via Fishbrain — 20 in the last 30 days, most recently on Jul 25, 2026.
Most-reported species
- Largemouth bass
- Northern pike
- Bluegill
- Yellow perch
- Black crappie
- Walleye
Show 5 more species
- Muskellunge
- Yellow bullhead
- Pumpkinseed
- Rock bass
- Smallmouth bass
1 of the 196 logged catches didn’t name a species and aren’t listed above.
Seasonality
All fishOf the 196 logged catches, 157 carry a month and 148 carry a year; the charts cover those.
2024 had the most reports (37).
Counts reflect reporting activity, not fish populations. Waterbody location is provider-level; exact spots and angler details aren’t shown.
Fishery details for this lakeExplore this area on FishbrainWisconsin DNR stocking
Fish stocking history
The latest published year is 2025, when 9,683 fish were recorded across 1 entry.
2023
WalleyeUpper Wisconsin River · Large Fingerling
10,3496.9 in average
2022
MuskellungeUpper Wisconsin River · Large Fingerling
24211.7 in average
2021
WalleyeMississippi Headwaters · Large Fingerling
15,9487.1 in average
2019
MuskellungeUpper Wisconsin River · Large Fingerling
22511.2 in average
2019
WalleyeMississippi Headwaters · Large Fingerling
2,1127.1 in average
2019
WalleyeMississippi Headwaters · Large Fingerling
12,4566.3 in average
2018
MuskellungeUpper Wisconsin River · Large Fingerling
21711.8 in average
2017
WalleyeMississippi Headwaters · Large Fingerling
14,4946.6 in average
2016
MuskellungeUpper Wisconsin River · Large Fingerling
97310.3 in average
2015
WalleyeMississippi Headwaters · Large Fingerling
14,5747.9 in average
2014
MuskellungeUpper Wisconsin River · Large Fingerling
1,0069.4 in average
Showing the 12 most recent records from 19 published entries.
NWS weather
Weather windows
Weather-based planning from the National Weather Service hourly forecast near this lake — not a catch forecast.
Loading latest forecast…
Checking wind, precipitation, and near-term weather windows.
Water temperature
Little Saint Germain Lake water temperature today
Modeled surface-temperature estimate built from seasonal climate, lake depth, and live National Weather Service air temperatures near this lake.
68°FWarm
Seasonal estimate. Checking current National Weather Service air temperatures…
Comfortable summer pattern. Bass and panfish are active; early and late hours beat the midday heat.
Estimates are modeled, not measured. Actual temperatures vary with depth, wind mixing, and recent weather — verify conditions before swimming, boating, or heading onto ice.
DNR water check
Water quality quick take
From Wisconsin DNR / Citizen Lake Monitoring readings at Little St Germain Lake - Northeast Bay Near St Germain WI.
Last sampled Aug 2025Volunteer monitoring since 1990
Through 2025, somewhat hazy, algae-prone water — summer clarity of 3.3 ft ranks among the lowest of monitored Wisconsin lakes.
Based on July–August 2025 averages across 4 volunteer readings.Water claritySecchi disk depth
3.3 ftJul–Aug 2025 avg (2 readings)
HazyStable since 2016
Clearer than 11% of 593 monitored Wisconsin lakes with current readings.
AlgaeChlorophyll-a
30 µg/LJul–Aug 2025 avg (2 readings)
HighStable since 2015
No recent nutrient readings — last measured 2020.
All readings by year · station details · methodology
Summer averages (July/August)
July/August means; counts in parentheses show how many samples went into each average.
| Year | Secchi | Chlorophyll-a | Total phosphorus |
|---|---|---|---|
| 2025 | 3.3 ft (2) | 30.0 µg/L (2) | — |
| 2024 | 3.3 ft (2) | — | — |
| 2021 | 3.1 ft (4) | 38.5 µg/L (2) | — |
| 2020 | 2.8 ft (4) | 38.5 µg/L (2) | — |
| 2019 | 3.3 ft (3) | 42.5 µg/L (2) | — |
| 2018 | 3.3 ft (4) | 34.0 µg/L (2) | — |
| 2017 | 3.3 ft (4) | 43.5 µg/L (2) | — |
| 2016 | 2.3 ft (1) | 70.0 µg/L (1) | — |
| 2015 | 2.8 ft (2) | 40.0 µg/L (2) | — |
| 2014 | 2.3 ft (3) | 64.5 µg/L (2) | — |
Latest individual samples: Secchi 3 ft (2025-08-29), chlorophyll-a 40 µg/L (2025-08-29), and total phosphorus 35 µg/L (2020-03-27).
Secchi clarity is how deep a black-and-white disk stays visible from the surface — more feet means clearer water.
Chlorophyll-a is an algae pigment; higher values signal more algae in the water column.
Total phosphorus is a nutrient that feeds algae and aquatic plants. It is not a weed survey — depth, bottom type, water movement, and management change the actual lake experience.
Little St Germain Lake - Northeast Bay Near St Germain WIStation 643170
Modeled from DNR/CLMN monitoring — not a safety or swim-condition report. Verify current conditions locally. LakeList verified 2026-07-12.Official Wisconsin information
Plan with DNR sources
LakeList links to the authoritative record so you can verify maps, rules, and current notices before leaving.
Historical DNR depth maps2 converted map sheetsFishing regulationsVerify current seasons, limits, and restrictionsOfficial DNR lake pageFacts, advisories, boating, and water qualityWater quality reportsMonitoring stations, clarity, and DNR reportsInvasive speciesVerified, observed, and historical AIS recordsBoating ordinancesLocal slow-no-wake and water-use restrictionsFish consumption advisoriesStatewide and waterbody-specific health guidance
Historical depth maps are not for navigation. Verify regulations and access at the official source before your trip.
Historical Wisconsin DNR maps
Little Saint Germain Lake depth maps
2 converted map sheets. These historical surveys are not for navigation.
Navigable depth map
Little Saint Germain Lake · sheet 1
Pan, zoom, and inspect the converted Wisconsin DNR historical map image in the browser. Historical survey — not for navigation.
Source: Wisconsin DNR · WBIC 1596300 · image navigation only; spatial alignment pending · Historical lake maps are not for navigation.
Source: Wisconsin Department of Natural Resources. Converted for browser access with source URLs, checksums, and retrieval dates retained. Historical lake maps are not for navigation.
972surface acres
53max depth feet
1public access points
45.9244, -89.4500latitude, longitude
Access
Public access points
Boat launchLittle Saint Germain Lake Boat Ramp45.91191, -89.47276Managed by STATE(DNR)TOWN OF SAINT GERMAINRamp surface: Concrete PanelsADA-accessible feature: YesVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Depth FAQ
How deep is Little Saint Germain Lake?
Little Saint Germain Lake is 53 feet deep at its deepest point and averages about 11 feet, according to Wisconsin DNR records.
Is there a free depth map of Little Saint Germain Lake?
Yes. LakeList publishes a free interactive depth contour map of Little Saint Germain Lake at a typical 5-foot interval, with an optional 3D underwater view, derived from C-MAP Genesis community sonar (derived) survey data.
Where does the Little Saint Germain Lake depth map come from?
The interactive depth contours are derived from C-MAP Genesis community sonar (derived). Each contour set passes a visual QA review against the source document before it is published. The depths are derived from community sonar recordings (C-MAP Genesis Social Map, used with permission), with gaps between recordings interpolated; not for navigation.
Trust and freshness
Where this lake data comes from
Wisconsin DNR Lake Pagesname, coordinates, county, source identifiers
LakeList record updated 2026-05-25
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