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Minnesota›Ramsey County›Lake Johanna

Lake Johanna

Limited dataInteractive depth contours
--°FLoading forecastWind pendingHumidity pendingPending fishingForecast
Lake JohannaRamsey County, MN
Contours load with map
Interactive depth contours5-foot typical interval · Official Minnesota DNR survey bathymetry · Not for navigation
Source: Minnesota DNRhigh confidence · QA passed · Select a contour to inspect its mapped depthOfficial Minnesota DNR lake survey: measured depth contours at a 5-ft interval (deepest mapped contour 40 ft), digitized by the DNR from field bathymetric surveys and reprojected to WGS84. Bathymetry © Minnesota DNR. Not for navigation.

LakeList assistant

Plan your lake day

Fishing spots, food, lodging, marinas, and rentals around Lake Johanna.

Start here

Fishing

Fishing at Lake Johanna

10 notable speciesAngler catch reportsWeather windows

Fishery

Notable species

black crappiebluegillgreen sunfishhybrid sunfishlargemouth bassnorthern pikepumpkinseedwalleyewhite crappieyellow perch
Best walleye lakes in Minnesota →Best panfish lakes in Minnesota →Best largemouth bass lakes in Minnesota →Best northern pike lakes in Minnesota →

Angler reports · Fishbrain

What anglers catch here

Anglers have logged 450 catches on Lake Johanna via Fishbrain — 18 in the last 30 days, most recently on Jul 26, 2026.

Most-reported species

  • Largemouth bass177 reports · peaks July
  • Northern pike102 reports · peaks October
  • Bluegill65 reports · peaks August
  • Muskellunge19 reports · peaks May
  • Tiger muskellunge19 reports · peaks July
  • Black crappie15 reports
Show 4 more species
  • Yellow perch12 reports
  • Pumpkinseed8 reports
  • Walleye6 reports
  • Bowfin reported as “Eyetail bowfin”4 reports

23 of the 450 logged catches didn’t name a species and aren’t listed above.

Seasonality

All fish
Jan
3Feb
Mar
10Apr
60May
92Jun
79Jul
61Aug
36Sep
44Oct
Nov
5Dec
Monthly reports, all fish: Jan 0 · Feb 3 · Mar 0 · Apr 10 · May 60 · Jun 92 · Jul 79 · Aug 61 · Sep 36 · Oct 44 · Nov 0 · Dec 5.

Of the 450 logged catches, 390 carry a month and 385 carry a year; the charts cover those.

2020 had the most reports (73).

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 Fishbrain

NWS weather

Weather windows

Weather-based planning from the National Weather Service hourly forecast near this lake — not a catch forecast.

Loading
Loading latest forecast…

Checking wind, precipitation, and near-term weather windows.

Water temperature

Lake Johanna water temperature today

Modeled surface-temperature estimate built from seasonal climate, lake depth, and live National Weather Service air temperatures near this lake.

69°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.

Warmest monthAugust · ~75°F
Freezing surfaceDecember – March
Model depth inputDepth unknown
Monthly Lake Johanna water temperatures and freeze-up FAQ →

Estimates are modeled, not measured. Actual temperatures vary with depth, wind mixing, and recent weather — verify conditions before swimming, boating, or heading onto ice.

211.91surface acres
Unknownmax depth feet
0public access points
45.0432, -93.1703latitude, longitude

Access

Public access points

No mapped access points yet

LakeList has not matched a public launch, park, or shoreline access point for this lake yet.

Nearby

Trip-planning places

No nearby trip-planning places yet

Depth FAQ

How deep is Lake Johanna?

Lake Johanna has surveyed depth contours down to 40 feet, but no separately verified maximum depth is on record yet.

Is there a free depth map of Lake Johanna?

Yes. LakeList publishes a free interactive depth contour map of Lake Johanna at a typical 5-foot interval, with an optional 3D underwater view, derived from Minnesota DNR survey data.

Where does the Lake Johanna depth map come from?

The interactive depth contours are derived from Minnesota DNR. Each contour set passes a visual QA review against the source document before it is published. The depths are from an official Minnesota DNR survey (measured bathymetric contours); not for navigation.

View the full Lake Johanna depth map →

Trust and freshness

Where this lake data comes from

USGS GNIS Domestic Namesname, coordinates, county, source identifiers
LakeList record updated 2026-07-24T19:35:26.063480+00:00

Keep exploring

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