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Magnor Lake
Enhanced dataInteractive depth contours
Magnor LakePolk 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 89% of the lake. Small gaps between recordings are smoothly connected; larger unrecorded areas follow the lake's depth model calibrated to the DNR-documented 26-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 Magnor Lake.
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Fishing forecast
Best windows for Magnor Lake
Weather-based planning built from the National Weather Service hourly forecast near this lake.
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Checking wind, precipitation, and near-term weather windows.
Water temperature
Magnor Lake water temperature today
Modeled surface-temperature estimate built from seasonal climate, lake depth, and live National Weather Service air temperatures near this lake.
74°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 Magnor Lake - Deep Hole.
Sampled Jul 2026Volunteer monitoring since 2000
Somewhat hazy, algae-prone water — summer clarity of 3.9 ft ranks among the lowest of monitored Wisconsin lakes.
Based on July–August volunteer averages from 2022–2023; each value shows its own year.Water claritySecchi disk depth
3.9 ftJul–Aug 2022 avg (3 readings)
HazyStable since 2017
Clearer than 12% of 596 monitored Wisconsin lakes with current readings.
AlgaeChlorophyll-a
61 µg/LJul–Aug 2023 avg (2 readings)
HighWorsening — up ~25% vs earlier years
No recent nutrient readings — last measured 2019.
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 |
|---|---|---|---|
| 2026 | 3.3 ft (1) | — | — |
| 2025 | 3.5 ft (1) | — | — |
| 2024 | 3.8 ft (1) | 46.0 µg/L (1) | — |
| 2023 | 3.5 ft (1) | 61.0 µg/L (2) | 106.0 µg/L (1) |
| 2022 | 3.9 ft (3) | 28.5 µg/L (2) | — |
| 2019 | 3.2 ft (5) | 34.5 µg/L (2) | 63.5 µg/L (2) |
| 2018 | 4.0 ft (4) | 18.5 µg/L (2) | 53.0 µg/L (2) |
| 2017 | 4.3 ft (2) | 55.5 µg/L (2) | — |
| 2016 | 4.5 ft (2) | 30.0 µg/L (2) | — |
| 2015 | — | 27.0 µg/L (1) | — |
Latest individual samples: Secchi 3.3 ft (2026-07-05), chlorophyll-a 36 µg/L (2025-06-22), and total phosphorus 106 µg/L (2023-08-20).
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.
Magnor Lake - Deep HoleStation 493166
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 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
Magnor Lake depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Magnor 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 2624600 · 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.
Wisconsin DNR fisheries survey
Fish population survey
Structured LakeList extraction from the 2019 DNR fisheries survey. Population estimates, density, and catch-rate indices use different units, methods, and scopes, so each value is presented in its original form rather than normalized against a different measure.
Survey indicatorsValues keep their source unit and method; unlike measures are not scaled or compared.
Management contextMagnor Lake (WBIC 2624600) only
Human-reviewed 2019 walleye, northern-pike, largemouth-bass and panfish metrics for Magnor Lake.
- Historical survey snapshot; not current regulations or navigation guidance.
- Only explicit report observations, estimates and creel metrics were promoted; management targets, lake-class comparisons and unsupported chart-only values were excluded.
- Metric source pages, survey years, methods, units and exact waterbody scope are retained.
Black Crappie
49 fish2019 catch count · p. 77.4 inches2019 min length · p. 710.5 inches2019 max length · p. 78.9 inches2019 mean length · p. 7
Bluegill
183 fish2019 catch count · p. 74.6 inches2019 min length · p. 79.6 inches2019 max length · p. 76.7 inches2019 mean length · p. 7
Largemouth Bass
116 fish2019 catch count · p. 69.2 inches2019 min length · p. 618.7 inches2019 max length · p. 613.5 inches2019 mean length · p. 6
Northern Pike
71 fish2019 catch count · p. 512.8 inches2019 min length · p. 532.1 inches2019 max length · p. 520.6 inches2019 mean length · p. 5
Walleye
3.2 adult fish/acre2019 adult population density · p. 30.2 coefficient of variation2019 adult population estimate cv · p. 3381 fish2019 catch count · p. 421 fish/net-night2019 fyke net cpue · p. 4
Fishery Survey Report for Magnor Lake, Polk County, Wisconsin 2019Matched by exact wbic name county · WBICs 2624600 · verified 2026-07-20Wisconsin DNR fisheries report; LakeList operator documented permission to leverage this public report with source attribution.
229surface acres
26max depth feet
1public access points
45.3227, -92.2051latitude, longitude
Access
Public access points
Boat launchAccess45.31867, -92.20128Managed by Wisconsin DNR
DNR verifiedDirections
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
Largemouth BassNorthern PikePanfishWalleye
Wisconsin DNR stocking
Fish stocking history
The latest published year is 2025, when 2,523 fish were recorded across 1 entry.
2025
WalleyeChippewa/St. Croix · Large Fingerling
2,5237.0 in average
2023
WalleyeChippewa/St. Croix · Large Fingerling
2,2946.6 in average
2021
WalleyeMississippi Headwaters · Large Fingerling
2,2946.5 in average
2020
WalleyeUnspecified · Large Fingerling
1,5007.0 in average
2019
WalleyeUnspecified · Large Fingerling
1,5007.0 in average
2019
WalleyeMississippi Headwaters · Large Fingerling
1,1476.3 in average
2018
WalleyeUnspecified · Large Fingerling
1,5007.0 in average
2017
WalleyeMississippi Headwaters · Large Fingerling
1,2714.0 in average
2017
WalleyeUnspecified · Large Fingerling
1,5007.0 in average
2016
WalleyeUnspecified · Large Fingerling
1,4957.0 in average
2015
WalleyeMississippi Headwaters · Large Fingerling
1,1477.4 in average
2015
WalleyeMississippi Headwaters · Large Fingerling
1,5007.0 in average
Showing the 12 most recent records from 19 published entries.
Depth FAQ
How deep is Magnor Lake?
Magnor Lake is 26 feet deep at its deepest point and averages about 10 feet, according to Wisconsin DNR records.
Is there a free depth map of Magnor Lake?
Yes. LakeList publishes a free interactive depth contour map of Magnor 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 Magnor 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 Mapsname, coordinates, county, source identifiers
LakeList record updated 2026-07-14
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