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LakeQuality
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Lake Galilee

Ashland County, WisconsinOligotrophic

Lake Galilee earns an A — water clarity, phosphorus, and chlorophyll-a all rate among the best monitored waters in Ashland County. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

The lake's low TSI puts it in oligotrophic territory — the cleanest of the four trophic classes, but also the most vulnerable to nutrient-driven shifts. The lake bottoms out at 23 ft — a moderate depth that supports a warm-water fishery without the year-round cold refuge a deeper basin provides. At 212 acres, Lake Galilee fits the Wisconsin median for monitored lakes, with partial shoreline records. Among the 10 graded lakes in Ashland County, Lake Galilee ranks 1 — in the top quartile locally.

Lake Galilee has at least one documented invasive species (Banded Mystery Snail), so boaters and anglers should observe clean-drain-dry steps when leaving the lake. 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 2025-07-31. 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 27.9 ft down. Phosphorus level: 16.8 µg/L. Trophic State Index: 37.

MetricValueGrade
Water Clarity (Secchi Depth)27.9 ftA
Phosphorus16.8 µg/LA
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)37Oligotrophic

Low nutrients, clear water, excellent for swimming

Lake Details

CharacteristicValue
Maximum Depth23 ft
Surface Area212 acres
Public AccessYes

Fish Species

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

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

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

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

Invasive Species

Banded Mystery SnailPurple Loosestrife

Water Quality Trend: Improving

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

MetricTrendChange/YearYears
Water Clarity Improving+0.219 m/yr7
Phosphorus Improving-0.8 µg/L/yr6

Recreation & Access

1
Boat Landings
Yes
Public Access

Location

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County Ranking

Ranked #1 of 10 lakes in Ashland County

Nearby Lakes in Ashland County

State Parks Near Lake Galilee

WI DNR Lake Profile

Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 2002. 3 stations on file (most recent sample 2025).

Fish Species (DNR-rated)

Panfish(Abundant)Musky(Common)Northern Pike(Common)Walleye(Common)Largemouth Bass(Present)Smallmouth Bass(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: 2025-07-31

Monitoring stations: 1