Deadman Lake
Oconto County, Wisconsin35 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Deadman Lake. Here is what has been measured.
- 45 ft max depth
- Limited data
Deadman Lake in Oconto County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 14.1 ft visibility. Phosphorus: 19.8 µg/L. Maximum depth: 45 ft. Surface area: 35 acres.
Wisconsin DNR lists Panfish as common on Deadman Lake. DNR survey details →
Deadman Lake is a 35-acre lake in Oconto County, Wisconsin with a maximum depth of 45 feet. Overall water quality is declining over recent sampling years. The lake supports 2 documented fish species including Panfish and Largemouth Bass.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-07-04. Methodology: how these readings are compared.
What Deadman Lake is good for
From access and monitoring records, not editorial picks.
- Clear water14.1 ft of visibility
- Deep water45 ft surveyed max depth
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Deadman Lake is safe to swim in today is a call for the Wisconsin Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Deadman Lake
These are the measurements Wisconsin DNR publishes for Deadman Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 14.1 ft. Phosphorus 19.8 µg/L. TSI 43.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 14.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 19.8µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 43 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Deadman Lake
Answers come straight from the public measurements and survey records on this page.
Wisconsin DNR lists Panfish as common on Deadman Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Deadman Lake’s water-quality measurements separately, and the water-quality trend over 3 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 2014. 1 station on file (most recent sample 2025).
Fish Species (DNR-rated)
Lake Details
Max depth
45 ft
Surface area
35 acres
Lake Size & Watershed
Watershed (drainage) area
12 sq mi
HydroLAKES / HydroSHEDS
Shoreline
1.2 mi
HydroLAKES / HydroSHEDS
Elevation
1,253 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Stays via Stay22
Stays near Deadman Lake
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Follow Deadman Lake’s readings
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Fish Species
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Fishing Deadman Lake
Water quality readings over time
2 seasons of samples on record (2023–2025). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Worsening2 years
Phosphorus
Worsening+10.15 µg/L/yr2 years
Nearby Lakes in Oconto County
Frequently asked questions about Deadman Lake
Where is Deadman Lake?
- Deadman Lake is a lake in Oconto County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Deadman Lake?
- Deadman Lake in Oconto County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 14.1 ft visibility. Phosphorus: 19.8 µg/L. Maximum depth: 45 ft. Surface area: 35 acres.
Is Deadman Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Deadman Lake?
- Deadman Lake has a maximum depth of 45 feet. The lake covers 35 acres.
What fish are in Deadman Lake?
- Fish species found in Deadman Lake include Panfish, Largemouth Bass. Deadman Lake is located in Oconto County, Wisconsin.
What did the DNR fisheries survey find at Deadman Lake?
- Wisconsin DNR lists Panfish as common on Deadman Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Deadman Lake’s water-quality measurements separately, and the water-quality trend over 3 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
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Where this data comes from
20 measurements from 1 monitoring station, 2021–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX20 samples · 2021–2025
Analytical methods
- Phosphorus by Colorimetry
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)
Fish and recreation data from Wisconsin DNR Lakes