Battle Lake
Battle Lake in Koochiching County, Minnesota has a water quality grade of C (Fair). Water clarity: 6 ft visibility. Phosphorus: 29 µg/L. Chlorophyll-a (algae): 4.1 µg/L. Maximum depth: 8.5 ft. Surface area: 285.89 acres.
- Clarity
- 6 ft
- Typical in August
- 74°F
- Max depth
- 8.5 ft
- Area
- 286 acres
- Type
- Mesotrophic
- Public access
- No
Next lake in Koochiching County
Battle Lake is a 286-acre mesotrophic lake in Koochiching County, Minnesota with a maximum depth of 9 feet. Water quality is graded C based on 2 sampling years through 2025. The lake supports 5 documented fish species including black bullhead, brown bullhead, and northern pike. No public access — the lake is private or restricted. Compared to the 2 other monitored lakes in Koochiching County, Battle Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-02. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Generally safe for swimming, moderate water quality
Water Quality Grade: C (Fair)
Murky, only visible to about 6 ft. Phosphorus level: 29 µg/L. Chlorophyll-a: 4.1 µg/L. Trophic State Index: 49.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6 ft | Not graded |
| Phosphorus | 29 µg/L | Fair |
| Chlorophyll-a (Algae) | 4.1 µg/L | Good |
| Trophic State Index (TSI) | 49 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Battle Lake
Compare lakeside cabins, hotels, and vacation rentals near Battle Lake in Koochiching County, Minnesota — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Battle Lake
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Water Temperature
Battle Lake typically sits around 74°F at the surface in August. Summer average is about 71°F. Usually warmest in Jul (about 75°F) and coldest in Jun (about 65°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 11 field readings (2025–2025) via the EPA Water Quality Portal. See the full Battle Lake water temperature breakdown →
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 8.5 ft |
| Surface Area | 286 acres |
| Shoreline Length | 4.1 mi |
| Littoral Zone | 100% |
| Public Access | No |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Battle Lake
County Ranking
Ranked #1 of 3 lakes in Koochiching County
Nearby Lakes With Higher Grades
Battle Lake holds Grade C. One nearby lake has a higher nutrient-and-algae grade — useful for a swim day, not a reason to skip lodging here.
Nearby Lakes in Koochiching County
Frequently asked questions about Battle Lake
What is the water quality grade for Battle Lake?
- Battle Lake in Koochiching County, Minnesota has a water quality grade of C (Fair). Water clarity: 6 ft visibility. Phosphorus: 29 µg/L. Chlorophyll-a (algae): 4.1 µg/L. Maximum depth: 8.5 ft. Surface area: 285.89 acres.
Is Battle Lake safe to swim in?
- Generally safe for swimming, moderate water quality. Battle Lake has a water quality grade of C (Fair). Algae concentration (chlorophyll-a) is 4.1 µg/L. Always check local health department advisories before swimming.
What is the water temperature of Battle Lake?
- Battle Lake typically sits around 74°F at the surface in August, from 11 EPA Water Quality Portal field readings (2025–2025). That is a typical value for the month, not a live reading.
How deep is Battle Lake?
- Battle Lake has a maximum depth of 8.5 feet. The lake covers 285.89 acres.
What fish are in Battle Lake?
- Fish species found in Battle Lake include black bullhead, brown bullhead, northern pike, white sucker, yellow perch. Battle Lake is located in Koochiching County, Minnesota.
Explore Battle Lake across LakeGrade
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Moderate nutrients, good water quality
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Where this data comes from
12 measurements from 1 monitoring station, 2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA12 samples · 2025
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder