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LakeQuality
B

Battle Lake

Itasca County, MinnesotaMesotrophic

Battle Lake carries a solid B grade — strong on most parameters, with measurements that hold up well across the summer season. The lake's weakest score is on Secchi depth — the water looks more turbid than its phosphorus number alone would predict.

Mesotrophic conditions dominate at Battle Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. A maximum depth of 15 ft puts Battle Lake in the middle of Minnesota's depth distribution. At 243 acres, Battle Lake fits the Minnesota median for monitored lakes, with 3.5 miles of shoreline. Battle Lake sits at rank 78 of 141 in Itasca County, in the lower half of the local distribution.

Battle Lake has no invasive species recorded in Minnesota state databases as of 2024, though prevention practices still apply at all access points. Walleye are documented at Battle Lake, one of 11 fish species on record for the lake. No formal public access is documented at Battle Lake — most use is by shoreline residents and their guests. 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 2024-09-23. Grade methodology: LakeGrade methodology.

Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Moderate clarity, visible to about 8.2 ft. Phosphorus level: 15 µg/L. Trophic State Index: 45.

MetricValueGrade
Water Clarity (Secchi Depth)8.2 ftC
Phosphorus15 µg/LA
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)45Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth15 ft
Surface Area243.32 acres
Shoreline Length3.5 mi
Littoral Zone100%
Public AccessNo

Fish Species

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

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

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

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

Water Quality Trend: Declining

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

MetricTrendChange/YearYears
Water Clarity Declining-0.267 m/yr5
Phosphorus Declining+1.33 µg/L/yr4

Ice Season

Historical ice data from Minnesota DNR (6 observations).

Typical Ice-Out
Apr 20
Typical Ice-In
Nov 22

Estimated open water season: 216 days

EarliestLatest
Ice-Out2005-04-14 (2005)2008-05-02 (2008)
Ice-In2003-11-05 (2003)2004-11-24 (2004)

Most recent ice-out: 2008-05-02

Location

Loading map…

County Ranking

Ranked #78 of 141 lakes in Itasca County

Nearby Lakes in Itasca County

DNR Fisheries Survey Summary

14 surveys on file from MN DNR Fisheries. Most recent: 2018-07-16 (Standard Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
IOD11.65
Yellow Perch6.280.17 lb
Bluegill5.530.41 lb
Bluntnose Minnow4.14
Northern Pike3.991.51 lb
CNM3.64

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.

Yellow Perch

26 fish · 47 in · 2018-07-16
14704567

Bluegill

67 fish · 39 in · 2018-07-16
1790trophy 103456789

Northern Pike

59 fish · 1726 in · 2018-07-16
137017181920212223242526

From the 2018-07-16 survey

Battle Lake is a 199 acre lake located east of Effie, MN in the Bigfork River watershed. The lake has a maximum depth of 15 feet and is part of a navigable chain of lakes including Pickerel and Deer Lakes. The lake has limited development, and the primary access is through a shallow channel from Pickerel Lake. All…

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 Battle 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

Ice data from Minnesota DNR Climate

Most recent sample: 2024-09-23

Monitoring stations: 2