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LakeQuality
B

Fireman'S Lake

Carver County, MinnesotaMesotrophic

Fireman'S Lake carries a solid B grade — strong on most parameters, with measurements that hold up well across the summer season. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

A TSI near 46 places Fireman'S Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. A maximum depth of 23 ft puts Fireman'S Lake in the middle of Minnesota's depth distribution. At 9 acres, Fireman'S Lake sits below the Minnesota median: a small water where shoreline activity has an outsized effect on water quality. Within Carver County's 40 graded waters, Fireman'S Lake sits at rank 6, near the top of the local distribution.

Fireman'S Lake carries an invasive watermilfoil record — boat-launch decontamination and shoreline care matter more here than at uninfested lakes. The fishery is panfish-dominated — bluegill, crappie, and sunfish among the 8 species documented for the lake. The lake lacks a documented public access point, so visitor use is limited. 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, Minnesota DNR LakeFinder, last sampled 2024-10-23. Grade methodology: LakeGrade methodology.

Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Good clarity, visible to about 10.8 ft. Phosphorus level: 23.5 µg/L. Trophic State Index: 46.

MetricValueGrade
Water Clarity (Secchi Depth)10.8 ftB
Phosphorus23.5 µg/LB
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)46Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth23 ft
Average Depth7 ft
Surface Area9.27 acres
Shoreline Length0.7 mi
Littoral Zone76%
Public AccessNo

Fish Species

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

→ Best fishing times for Fireman'S Lake (14-day solunar calendar)

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

Fireman'S Lake fishing regulations (limits, seasons, special rules)

Invasive Species

Eurasian watermilfoil

Water Quality Trend: Stable

Based on 5 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Stable+0.048 m/yr5
Phosphorus Stable+0.15 µg/L/yr5

Location

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County Ranking

Ranked #6 of 40 lakes in Carver County

Nearby Lakes in Carver County

DNR Fisheries Survey Summary

4 surveys on file from MN DNR Fisheries. Most recent: 2017-07-05 (Standard Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Bluegill49.780.06 lb
Hybrid Sunfish5.300.09 lb
Pumpkinseed3.380.05 lb
GOS2.830.14 lb
Black Crappie2.400.27 lb
Largemouth Bass1.080.21 lb

CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE = more abundant in standardized sampling.

Length Distributions

Number of fish caught at each inch class in the most recent survey that recorded lengths. Red dashed line marks an approximate trophy threshold for that species.

Bluegill

989 fish · 47 in · 2017-07-05
79239604567

Hybrid Sunfish

62 fish · 37 in · 2017-07-05
2412034567

Pumpkinseed

63 fish · 35 in · 2017-07-05
57290345

GOS

17 fish · 67 in · 2017-07-05
158067

From the 2017-07-05 survey

Firemen's Pond is a 9-acre lake in the middle of downtown Chaska. In 2016 the City of Chaska completed a project that upgraded the surrounding park which has increased access to a large portion of the shoreline for fishing. A portion of the pond is designated for swimming and sits adjacent to a playground and a picnic…

Source: MN DNR LakeFinder Fisheries Lake Survey

DNR Reports & Resources

Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Fireman'S Lake. 2 reports on file.

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Lake details from Minnesota DNR LakeFinder

Most recent sample: 2024-10-23

Monitoring stations: 1