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B

Jungle Lake

Forest County, WisconsinLimited DataMesotrophic

Jungle Lake carries a solid B grade — strong on most parameters, with measurements that hold up well across the summer season.

The lake sits in the mesotrophic zone — the band where most well-managed Wisconsin lakes fall. Jungle Lake is a shallow lake at 14 ft maximum depth, which means it warms quickly, mixes constantly, and amplifies nutrient inputs. The lake's 180 acres and partial shoreline records put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Jungle Lake sits at rank 19 of 34 in Forest County, in the lower half of the local distribution.

An invasive species record — Banded Mystery Snail — has been logged at Jungle Lake; Wisconsin DNR maintains the official infested-waters list. The fishery includes walleye among the lake's 4 documented species — a notable draw for Wisconsin anglers. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.

Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-10-15. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

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Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Good clarity, visible to about 10.5 ft. Trophic State Index: 43.

MetricValueGrade
Water Clarity (Secchi Depth)10.5 ftB
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)43Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth14 ft
Surface Area180 acres

Fish Species

Click a species to see all Wisconsin and Minnesota lakes where it is found.

→ Best fishing times for Jungle Lake (14-day solunar calendar)

→ Is it safe to eat fish from Jungle Lake? (mercury & PFAS guide)

Jungle 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.

Banded Mystery Snail

Water Quality Trend: Improving

Based on 6 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+0.471 m/yr6
See year-by-year chart →

Location

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County Ranking

Ranked #19 of 34 lakes in Forest County

Cleaner Lakes Within 30 Miles

Jungle Lake holds Grade B. 3 nearby lakes hold higher grades.

Nearby Lakes in Forest County

WI DNR Lake Profile

Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 2013. 1 station on file (most recent sample 2025).

DNR Assessment
Excellent · Shallow Headwater lake
Trophic State Index 44 (mesotrophic) · 5-year average

Fish Species (DNR-rated)

Panfish(Common)Largemouth Bass(Common)Northern Pike(Common)Walleye(Present)

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2025-10-15

Monitoring stations: 1