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Apple River Flowage
Enhanced dataInteractive depth contours
Apple River FlowagePolk 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 43% of the lake. Small gaps between recordings are smoothly connected; larger unrecorded areas follow the lake's depth model calibrated to the DNR-documented 18-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 Apple River Flowage.
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Fishing forecast
Best windows for Apple River Flowage
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
Apple River Flowage 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 Apple River Flowage - Deep Hole.
Sampled Sep 2025Volunteer monitoring since 1986
Somewhat hazy water — summer clarity of 5.3 ft is lower than most monitored Wisconsin lakes.
Based on July–August 2025 averages across 2 volunteer readings.Water claritySecchi disk depth
5.3 ftJul–Aug 2025 avg (2 readings)
HazyStable since 2017
Clearer than 30% of 596 monitored Wisconsin lakes with current readings.
NutrientsTotal phosphorus — fuels plant & algae growth
101 µg/LLatest single sample · 2021-08-02
High2016–2021
High phosphorus points to heavy plant/algae growth pressure.
No recent algae 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 |
|---|---|---|---|
| 2025 | 5.3 ft (2) | — | — |
| 2024 | 5.0 ft (1) | — | — |
| 2023 | 6.0 ft (1) | — | — |
| 2022 | 5.6 ft (2) | 4.0 µg/L (1) | — |
| 2021 | 6.0 ft (1) | — | 101.0 µg/L (1) |
| 2020 | — | 40.0 µg/L (1) | — |
| 2019 | 5.5 ft (3) | 14.5 µg/L (2) | 123.0 µg/L (1) |
| 2018 | 6.3 ft (6) | 16.0 µg/L (2) | — |
| 2017 | 6.8 ft (5) | 10.5 µg/L (2) | — |
| 2016 | 5.2 ft (3) | 27.0 µg/L (2) | 71.0 µg/L (1) |
Latest individual samples: Secchi 6 ft (2025-09-17), chlorophyll-a 4 µg/L (2022-07-26), and total phosphorus 101 µg/L (2021-08-02).
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.
Apple River Flowage - Deep HoleStation 493104
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 maps3 converted map sheetsView 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
Apple River Flowage depth maps
3 converted map sheets. These historical surveys are not for navigation.
Navigable depth map
Apple River Flowage · 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 2624200 · 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 2024 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 contextFlowage-specific 2024 spring electrofishing sample; targeted panfish/bass and nontarget gamefish remain distinct.
DNR documented abundant but mostly small bluegill and pumpkinseed, moderate largemouth-bass abundance and growth, and limited nontarget crappie and northern-pike samples.
- Five muskellunge were observed but not captured; observations are not promoted as catch metrics.
- Single rock bass and white-sucker observations are excluded as peripheral to the report's management targets.
- No means are inferred from printed length ranges.
Black crappie
3 fishTotal captured · p. 36.1 inchesminimum captured length · p. 38.3 inchesmaximum captured length · p. 3
Bluegill
326 fishTotal captured · p. 1163 fish/mileSurvey CPUE · p. 13 inchesminimum captured length · p. 17.8 inchesmaximum captured length · p. 1
Largemouth bass
110 fishTotal captured · p. 214 fish/mileSurvey CPUE · p. 26 inchesminimum captured length · p. 219 inchesmaximum captured length · p. 2
Northern pike
3 fishTotal captured · p. 317.5 inchesminimum captured length · p. 328 inchesmaximum captured length · p. 3
Pumpkinseed
147 fishTotal captured · p. 374 fish/mileSurvey CPUE · p. 34.5 inchesminimum captured length · p. 37.7 inchesmaximum captured length · p. 3
2024 Spring Electrofishing Survey: Apple River Flowage, Polk CountyMatched by exact wbic name county · WBICs 2624200 · verified 2026-07-19Wisconsin DNR fisheries survey report; LakeList operator documented permission to leverage this report with source attribution.
604surface acres
18max depth feet
3public access points
45.3717, -92.3632latitude, longitude
Access
Public access points
Boat launchAccess45.33711, -92.34634Managed by Wisconsin DNR
DNR verifiedDirections
Boat launchAccess at Birch St And Riverside Blvd Amery45.31253, -92.35963Managed by Wisconsin DNR
DNR verifiedDirections
Boat launchAccess Off Hwy 46 In Amery45.31925, -92.35744Managed by Wisconsin DNR
DNR verifiedDirections
Nearby
Trip-planning places
CampgroundApple River Park & Campground1.2 miles away
CampgroundOx Lake Bible Camp4.4 miles away
CampgroundWapo Bible Camp4.4 miles away
Fishery
Notable species
PanfishLargemouth BassMuskyNorthern Pike
Wisconsin DNR stocking
Fish stocking history
The latest published year is 2024, when 604 fish were recorded across 1 entry.
2024
MuskellungeUpper Chippewa River · Large Fingerling
60413.3 in average
2022
MuskellungeUpper Chippewa River · Large Fingerling
60011.7 in average
2018
MuskellungeUpper Chippewa River · Large Fingerling
69911.8 in average
2016
MuskellungeUpper Chippewa River · Large Fingerling
41512.0 in average
2014
MuskellungeUpper Chippewa River · Large Fingerling
63910.5 in average
2012
MuskellungeUpper Chippewa River · Large Fingerling
63912.8 in average
2011
MuskellungeUpper Chippewa River · Large Fingerling
30010.1 in average
2010
MuskellungeUpper Chippewa River · Large Fingerling
28112.3 in average
Depth FAQ
How deep is Apple River Flowage?
Apple River Flowage is 18 feet deep at its deepest point and averages about 6 feet, according to Wisconsin DNR records.
Is there a free depth map of Apple River Flowage?
Yes. LakeList publishes a free interactive depth contour map of Apple River Flowage 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 Apple River Flowage 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 2026-07-20