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Shadow Lake
Enhanced dataHistorical depth chart
Shadow LakeWaupaca County, WI
Historical source depth chart available1 converted source DNR map sheet can be panned and zoomed in the browser. Interactive contours stay hidden until visual QA passes. Historical survey — not for navigation.
View browser depth chartLakeList assistant
Plan your lake day
Fishing spots, food, lodging, marinas, and rentals around Shadow Lake.
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Fishing forecast
Best windows for Shadow 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
Shadow Lake water temperature today
Modeled surface-temperature estimate built from seasonal climate, lake depth, and live National Weather Service air temperatures near this lake.
73°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.
Wisconsin DNR water assessment
Impaired waterbody listed
The DNR lists this waterbody as impaired. This notice is not itself a closure; review the official assessment and current guidance before your trip.
303(d) / impairment record
Degraded Aquatic VegetationPollutants: Unknown Pollutant
- Status
- 303d Listed
- Public health
- General Advice
- Recreation
- Full Body Contact
- Aquatic life
- Not specified
Water is impaired due to one or more pollutants and associated quality impacts.
Review DNR water quality Check consumption advice Source updated 2026-03-25 · LakeList verified 2026-07-12
DNR water check
Water quality quick take
From Wisconsin DNR / Citizen Lake Monitoring readings at Shadow Lake - Deep Hole.
Sampled Nov 2025
Clear, low-algae water — summer clarity of 12 ft is clearer than most monitored Wisconsin lakes.
Based on July–August volunteer averages from 2021–2024; each value shows its own year.Water claritySecchi disk depth
12 ftJul–Aug 2021 avg (2 readings)
ClearImproving — up ~18% vs earlier years
Clearer than 69% of 597 monitored Wisconsin lakes with current readings.
AlgaeChlorophyll-a
3 µg/LJul–Aug 2024 avg (2 readings)
Low2020–2025
NutrientsTotal phosphorus — fuels plant & algae growth
8.5 µg/LJul–Aug 2024 avg (2 readings)
Very low2023–2025
Very low phosphorus means very light plant/algae growth pressure.
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 | — | 2.0 µg/L (1) | 6.0 µg/L (1) |
| 2024 | — | 3.0 µg/L (2) | 8.5 µg/L (2) |
| 2023 | — | 3.0 µg/L (2) | 18.0 µg/L (1) |
| 2021 | 12.0 ft (2) | — | — |
| 2020 | 13.0 ft (3) | 2.0 µg/L (1) | — |
| 2019 | 10.5 ft (2) | — | — |
| 2018 | 8.0 ft (2) | — | — |
| 2017 | 10.5 ft (2) | — | — |
| 2016 | 11.5 ft (2) | — | — |
| 2015 | 11.5 ft (2) | — | — |
Latest individual samples: Secchi 12 ft (2021-08-15), chlorophyll-a 2 µg/L (2025-07-15), and total phosphorus 32 µg/L (2025-11-26).
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.
Shadow Lake - Deep HoleStation 693034
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
Shadow Lake depth maps
1 converted map sheet · 1 map-aligned. These historical surveys are not for navigation.
Navigable depth map
Shadow 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 258600 · 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.
Wisconsin DNR fisheries survey
Fish population survey
Structured LakeList extraction from the 2021 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 contextThe reviewed metrics apply only to Shadow Lake (WBIC 258600) and retain the report's gear, threshold and sample scope.
Human-reviewed, page-evidenced 2021 fisheries metrics for Shadow Lake (WBIC 258600).
- Historical fisheries snapshot; not current fishing regulations or navigation guidance.
- Only metrics explicitly supported by the cited source page were promoted.
- Relative-abundance indices, population estimates, gear limitations and size thresholds retain source scope.
Bluegill
146 fish2021 spring electrofishing catch · p. 1130.4 fish/mile2021 spring electrofishing CPUE · p. 148.2 fish/mile2021 spring electrofishing CPUE for fish at least 7.0 inches · p. 1146 fishFish measured in 2021 spring electrofishing · p. 2
Largemouth Bass
47 fish2021 spring electrofishing catch · p. 142 fish/mile2021 spring electrofishing CPUE · p. 15.4 fish/mile2021 spring electrofishing CPUE for fish at least 14.0 inches · p. 147 fishFish measured in 2021 spring electrofishing · p. 2
Pumpkinseed
23 fish2021 spring electrofishing catch · p. 120.5 fish/mile2021 spring electrofishing CPUE · p. 10 fish/mile2021 spring electrofishing CPUE for fish at least 7.0 inches · p. 123 fishFish measured in 2021 spring electrofishing · p. 2
Shadow Lake shocking survey, 2021Matched by exact wbic name county · WBICs 258600 · verified 2026-07-19Wisconsin DNR fisheries survey report; LakeList operator documented permission to leverage this public report with source attribution.
44surface acres
41max depth feet
1public access points
44.3458, -89.0872latitude, longitude
Access
Public access points
Boat launchShadow Lake Access44.34695, -89.08862Managed by CITYCITY OF WAUPACARamp surface: PavedADA-accessible feature: NoVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
Largemouth BassPanfishNorthern PikeWalleye
Depth FAQ
How deep is Shadow Lake?
Shadow Lake is 41 feet deep at its deepest point and averages about 17 feet, according to Wisconsin DNR records.
Is there a free depth map of Shadow Lake?
Yes. 1 scanned Wisconsin DNR lake survey map sheet is free to view and zoom on LakeList. These historical surveys are not for navigation.
Where does the Shadow Lake depth map come from?
The map sheets are converted from official Wisconsin DNR lake survey documents, with the source URL, checksum, and retrieval date retained for every sheet. Historical surveys are 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