2025
Brown TroutSt. Croix · Yearling
7589.1 in average
LakeList
FavoritesStateWisconsin
Johns Lake
Enhanced dataInteractive depth contours
Johns LakeWaushara County, WI
Contours load with map Access
Interactive depth contours5-foot typical interval · Modeled depth estimate · Not a survey · Not for navigation
Source: LakeList depth modelmedium confidence · QA passed · Select a contour to inspect its mapped depthModeled depth estimate: contours computed from the lake's shoreline shape and its documented 41-ft maximum depth (depth grows with distance from shore, calibrated to the documented mean depth where available). This is a smooth mathematical model, not a survey - real holes, bars, and drop-offs will differ. Community sonar (C-MAP Genesis) overlays where recorded. Not for navigation.LakeList assistant
Plan your lake day
Fishing spots, food, lodging, marinas, and rentals around Johns Lake.
Start here
Fishing
Fishing at Johns Lake
Fishery
Notable species
PanfishNorthern PikeTrout
Angler reports · Fishbrain
What anglers catch here
Anglers logged 25 catches on Johns Lake via Fishbrain; the last was on Jul 5, 2024.
Most-reported species
- Largemouth bass
- Rock bass
- Northern pike
2 of the 25 logged catches didn’t name a species and aren’t listed above.
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 1,536 fish were recorded across 2 entries.
2025
Rainbow TroutErwin · Yearling
7788.0 in average
2024
Brown TroutSt. Croix · Yearling
1,2399.0 in average
2024
Rainbow TroutErwin · Yearling
6579.4 in average
2023
Brown TroutSt. Croix · Yearling
2,5079.0 in average
2023
Rainbow TroutErwin · Yearling
1,8008.1 in average
2022
Brown TroutSt. Croix · Yearling
5,0298.9 in average
2022
Rainbow TroutErwin · Yearling
1,8728.5 in average
2021
Brown TroutSt. Croix · Yearling
5,0158.6 in average
2020
Brown TroutSt. Croix · Yearling
3,2289.0 in average
2019
Brown TroutSt. Croix · Yearling
2,4538.9 in average
2019
Rainbow TroutErwin · Yearling
1,3699.6 in average
Showing the 12 most recent records from 31 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
Johns Lake water temperature today
Modeled surface-temperature estimate built from seasonal climate, lake depth, and live National Weather Service air temperatures near this lake.
70°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.
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 maps1 converted map sheetView DNR depth mapHistorical map · not for navigationFishing 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
Johns Lake depth maps
1 converted map sheet · 1 map-aligned. These historical surveys are not for navigation.
Navigable depth map
Johns 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 245800 · map alignment passed · 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.
71surface acres
41max depth feet
1public access points
44.0803, -89.2108latitude, longitude
Access
Public access points
Boat launchJohns Lake Boat Ramp44.07717, -89.21149Managed by TOWNSHIPTOWN OF MOUNT MORRISRamp surface: GravelADA-accessible feature: NoVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Depth FAQ
How deep is Johns Lake?
Johns Lake is 41 feet deep at its deepest point and averages about 22 feet, according to Wisconsin DNR records.
Is there a free depth map of Johns Lake?
Yes. LakeList publishes a free interactive depth contour map of Johns Lake at a typical 5-foot interval, with an optional 3D underwater view, derived from LakeList depth model survey data.
Where does the Johns Lake depth map come from?
The interactive depth contours are derived from LakeList depth model. Each contour set passes a visual QA review against the source document before it is published. The depths are a modeled estimate calibrated to the lake's documented maximum depth - not a survey, and not for navigation.
Trust and freshness
Where this lake data comes from
Wisconsin DNR Lake Mapsname, coordinates, county, source identifiers
LakeList record updated 2026-07-14
Keep exploring