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Razorback Lake

Vilas County, WisconsinLimited DataOligotrophic

On the LakeGrade rubric, Razorback Lake pulls an A: clarity at 46.4 ft and phosphorus readings still being added put it in the top bracket for Wisconsin. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.

A TSI value of 22 puts Razorback Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. A maximum depth of 35 ft puts Razorback Lake in the middle of Wisconsin's depth distribution. Razorback Lake covers 381 acres alongside partial shoreline records — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Among the 202 graded lakes in Vilas County, Razorback Lake sits at rank 60, above the county median.

Eurasian watermilfoil is established at Razorback Lake, which can dampen recreational access and pressure the native plant community. The fishery includes walleye alongside the lake's other 6 documented species — a notable draw for Wisconsin anglers. A documented public access point at Razorback Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. 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 2021-08-03. 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 46.4 ft down. Trophic State Index: 22.

MetricValueGrade
Water Clarity (Secchi Depth)46.4 ftA
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)22Oligotrophic

Low nutrients, clear water, excellent for swimming

Lake Details

CharacteristicValue
Maximum Depth35 ft
Surface Area381 acres
Public AccessYes

Fish Species

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

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

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

Razorback Lake fishing regulations (limits, seasons, special rules)

Invasive Species

Banded Mystery SnailChinese Mystery SnailEurasian Water-Milfoil

Water Quality Trend: Improving

Based on 2 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+1.05 m/yr2
See year-by-year chart →

Recreation & Access

1
Boat Landings
Yes
Public Access

Location

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County Ranking

Ranked #60 of 202 lakes in Vilas County

Nearby Lakes in Vilas County

WI DNR Lake Profile

Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2021).

Fish Species (DNR-rated)

Panfish(Common)Largemouth Bass(Common)Smallmouth Bass(Common)Northern Pike(Common)Walleye(Common)Musky(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: 2021-08-03

Monitoring stations: 1