Munger Lake
Oconto County, WisconsinMesotrophic
Munger Lake comes in at a B on the grading rubric — a respectable showing for a Wisconsin lake of its size and depth. Secchi readings are the weakest of the three parameters, suggesting suspended sediment or algal biomass dominates the optical signal.
A TSI near 46 places Munger Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. A maximum depth of 19 ft puts Munger Lake in the middle of Wisconsin's depth distribution. Munger Lake is small — 89 acres alongside partial shoreline records — which makes it sensitive to even modest changes in watershed runoff or recreational pressure. Munger Lake sits at rank 45 of 62 in Oconto County, in the lower half of the local distribution.
Munger Lake carries an invasive watermilfoil record — boat-launch decontamination and shoreline care matter more here than at uninfested lakes. The fishery is bass-led, with 4 documented species across the lake's records. Public access is available — the lake is on the Wisconsin DNR public-access list. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-14. Grade methodology: LakeGrade methodology.
Watch Munger Lake water quality
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Moderate clarity, visible to about 7 ft. Phosphorus level: 15.6 µg/L. Trophic State Index: 46.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 7 ft | C |
| Phosphorus | 15.6 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 19 ft |
| Surface Area | 89 acres |
| Public Access | Yes |
Fish Species
Click a species to see every graded lake where it is documented.
→ Best fishing times for Munger Lake (14-day solunar calendar)
→ Is it safe to eat fish from Munger Lake? (mercury & PFAS guide)
→ Munger Lake fishing regulations (limits, seasons, special rules)
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water Quality Trend: ↑ Improving
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +2.329 m/yr | 6 |
| Phosphorus | → Stable | +0.08 µg/L/yr | 6 |
Recreation & Access
Location
County Ranking
Ranked #45 of 62 lakes in Oconto County
Cleaner Lakes Within 30 Miles
Munger Lake holds Grade B. 5 nearby lakes hold higher grades.
- AWheeler LakeOconto County · mi · Higher grade (B → A)
- APine Ridge LakeOconto County · mi · Higher grade (B → A)
- APaya LakeOconto County · mi · Higher grade (B → A)
- AMaiden LakeOconto County · mi · Higher grade (B → A)
- AWaubee LakeOconto County · mi · Higher grade (B → A)
Nearby Lakes in Oconto County
More Wisconsin Lake Rankings
State Parks Near Munger Lake
Other Grade B Lakes in Wisconsin
Mesotrophic Lakes in Wisconsin
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 2005. 1 station on file (most recent sample 2025).
Fish Species (DNR-rated)
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Fish and recreation data from Wisconsin DNR Lakes
Public boat-access points from the USGS National Boat Ramps inventory
Most recent sample: 2026-06-14
Monitoring stations: 1
Where to stay near Munger Lake
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