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Caldron Falls Reservoir
Enhanced dataHistorical depth chart
Caldron Falls ReservoirMarinette County, WI
Historical source depth chart available2 converted source DNR map sheets 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
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Fishing spots, food, lodging, marinas, and rentals around Caldron Falls Reservoir.
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Fishing
Fishing at Caldron Falls Reservoir
Fishery
Notable species
Largemouth BassMuskyNorthern PikePanfishWalleye
Wisconsin DNR · 2026–2027 season
Lake-specific fishing regulations
Rule text published by the DNR for this waterbody, cached by WBIC and verified 2026-07-12.
All species
Catch and release fishing for largemouth and smallmouth bass is open year round unless otherwise noted. Motor Trolling is allowed with up to 3 hooks, baits, or lures, per angler.
Catfish
Season Dates: Open All Year. No minimum length limit and the daily bag limit is 10.
Cisco and whitefish
Season Dates: Open All Year. No minimum length limit and the daily bag limit is 10.
Lake sturgeon
Season Dates: Closed. No fishing allowed.
Largemouth and smallmouth bass
Season Dates: June 20, 2026 to March 7, 2027. The minimum length limit is 14" and the daily bag limit is 5.
Muskellunge and hybrids
Season Dates: May 2, 2026 to December 31, 2026 on open water. The minimum length limit is 50" and the daily bag limit is 1.
Northern pike
Season Dates: May 2, 2026 to March 7, 2027. No minimum length limit and the daily bag limit is 5.
Paddlefish
Season Dates: Closed. No fishing allowed.
Panfish
Season Dates: Open All Year. No minimum length limit and the daily bag limit is 25, 25 panfish may be kept, but only 10 of any one species.
Rock, yellow, and white bass
Season Dates: Open All Year. No minimum length limit and the daily bag limit is unlimited.
Rough fish
Season Dates: Open All Year. No minimum length limit and the daily bag limit is unlimited.
Shovelnose sturgeon
Season Dates: Closed. No fishing allowed.
Trout and salmon
See Trout regulations layer.
Urban waters gamefish
This waterbody is not considered an urban water, Urban Waters Gamefish regulations do not apply.
Walleye, sauger, and hybrids
Season Dates: May 2, 2026 to March 7, 2027. The minimum length is 15", but walleye, sauger, and hybrids from 20" to 24" may not be kept, and only 1 fish over 24" is allowed. The daily bag limit is 3.
Regulations can change. The official DNR page controls; verify seasons, boundaries, bag limits, and emergency rules before fishing.
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
Caldron Falls Reservoir 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.
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
Public-health advice and impairment listed
The DNR assessment indicates specific public-health advice for this waterbody. Review current official guidance before your trip or eating your catch.
303(d) / impairment recordSpecific public-health advice
Mercury Contaminated Fish TissuePollutants: Mercury
- Status
- 303d Listed
- Public health
- Specific 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 2025-02-10 · LakeList verified 2026-07-12
DNR water check
Water quality quick take
From Wisconsin DNR / Citizen Lake Monitoring readings at Caldron Falls Reservoir - Deep Hole.
Last sampled Sep 2024
Through 2024, dNR monitoring data is available for this lake.
Based on the newest individual DNR samples — too few to average.No recent clarity readings — last measured 2014. No recent algae readings — last measured 2003. No recent nutrient readings — last measured 2003.
Listed as impaired on the DNR/EPA water-condition assessment — see the notice on this page for details.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 |
|---|---|---|---|
| 2024 | 4.5 ft (1) | — | — |
| 2022 | 9.0 ft (1) | — | — |
| 2019 | 6.0 ft (1) | — | — |
| 2016 | 7.0 ft (1) | — | — |
| 2015 | 5.0 ft (1) | — | — |
| 2014 | 6.0 ft (2) | — | — |
| 2013 | 6.2 ft (5) | — | — |
| 2012 | 4.8 ft (2) | — | — |
| 2011 | 5.5 ft (2) | — | — |
| 2010 | 4.8 ft (2) | — | — |
Latest individual samples: Secchi 5.5 ft (2024-09-20), chlorophyll-a 10 µg/L (2003-08-13), and total phosphorus 17 µg/L (2003-08-13).
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.
Caldron Falls Reservoir - Deep HoleStation 383053
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 maps2 converted map sheetsFishing 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
Caldron Falls Reservoir depth maps
2 converted map sheets. These historical surveys are not for navigation.
Navigable depth map
Caldron Falls Reservoir* · 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 545400 · 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.
1,063surface acres
40max depth feet
5public access points
45.3589, -88.2429latitude, longitude
Access
Public access points
Boat launchBoat Launch #10 - North Bay45.36005, -88.26912Managed by STATE(DNR)TOWN OF STEPHENSONRamp surface: GravelADA-accessible feature: NoVerified 2026-07-12
Boat launchBoat Launch #11 - Crandall Creek45.36418, -88.30485Managed by STATE(DNR)TOWN OF STEPHENSONRamp surface: Concrete PlankADA-accessible feature: NoVerified 2026-07-12
Boat launchBoat Launch #13 - South Bay45.34490, -88.24856Managed by STATE(DNR)TOWN OF STEPHENSONRamp surface: Concrete PanelsADA-accessible feature: YesVerified 2026-07-12
Boat launchBoat Launch #8 - Caldron Bay45.35323, -88.23303Managed by STATE(DNR)TOWN OF STEPHENSONRamp surface: Concrete PlankADA-accessible feature: YesVerified 2026-07-12
Boat launchBoat Launch #9 - Muskellunge Point45.36330, -88.24672Managed by STATE(DNR)TOWN OF STEPHENSONRamp surface: Concrete PanelsADA-accessible feature: YesVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Depth FAQ
How deep is Caldron Falls Reservoir?
Caldron Falls Reservoir is 40 feet deep at its deepest point and averages about 15 feet, according to Wisconsin DNR records.
Is there a free depth map of Caldron Falls Reservoir?
Yes. 2 scanned Wisconsin DNR lake survey map sheets are free to view and zoom on LakeList. These historical surveys are not for navigation.
Where does the Caldron Falls Reservoir 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 Pagesname, coordinates, county, source identifiers
LakeList record updated 2026-07-12