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LakeQuality
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Lower Kaubashine Lake

Oneida County, WisconsinOligotrophic

Lower Kaubashine Lake earns an A — water clarity, phosphorus, and chlorophyll-a all rate among the best monitored waters in Oneida County. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

A TSI value of 31 puts Lower Kaubashine Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. The lake bottoms out at 36 ft — a moderate depth that supports a warm-water fishery without the year-round cold refuge a deeper basin provides. Lower Kaubashine Lake covers 198 acres alongside partial shoreline records — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Lower Kaubashine Lake ranks 40 of 140 in Oneida County — solidly in the upper half of the local distribution.

An invasive species record — Purple Loosestrife — has been logged at Lower Kaubashine Lake; Wisconsin DNR maintains the official infested-waters list. The fishery includes walleye alongside the lake's other 6 documented species — a notable draw for Wisconsin anglers. Public access is available — the lake is on the Wisconsin DNR public-access list. 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 2025-08-25. Grade methodology: LakeGrade methodology.

Swimming Safety

Excellent for swimming, crystal clear water with minimal algae

Water Quality Grade: A, Excellent

Crystal clear, you can see 44 ft down. Phosphorus level: 11.1 µg/L. Trophic State Index: 31.

MetricValueGrade
Water Clarity (Secchi Depth)44 ftA
Phosphorus11.1 µg/LA
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)31Oligotrophic

Low nutrients, clear water, excellent for swimming

Lake Details

CharacteristicValue
Maximum Depth36 ft
Surface Area198 acres
Public AccessYes

Fish Species

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

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

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

Lower Kaubashine Lake fishing regulations (limits, seasons, special rules)

Invasive Species

Purple LoosestrifeRusty Crayfish

Water Quality Trend: Stable

Based on 7 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Stable+0.241 m/yr7
Phosphorus Stable+0.11 µg/L/yr6
See year-by-year chart →

Recreation & Access

1
Boat Landings
Yes
Public Access

Location

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County Ranking

Ranked #40 of 140 lakes in Oneida County

Nearby Lakes in Oneida County

WI DNR Lake Profile

Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 1986. 3 stations on file (most recent sample 2025).

DNR Assessment
Excellent · Deep Lowland lake
Trophic State Index 40 (oligotrophic) · 5-year average

Fish Species (DNR-rated)

Panfish(Abundant)Musky(Common)Largemouth Bass(Common)Smallmouth 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

Fish and recreation data from Wisconsin DNR Lakes

Most recent sample: 2025-08-25

Monitoring stations: 2