Halverson Lake
Halverson Lake in Polk County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 3 ft visibility. Phosphorus: 51 µg/L. Chlorophyll-a (algae): 16.7 µg/L.
- Clarity
- 3 ft
- Public access
- No
- Ice-out
- Apr 14
Next lake in Polk County
Why Halverson Lake has no grade
We grade a lake only when its monitoring record clears the evidence bar: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Halverson Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by MPCA and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Halverson Lake is a lake in Polk County, Minnesota. Limited fish-species data available. No public access — the lake is private or restricted.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2023-08-29. Grade methodology: LakeGrade methodology.
Watch Halverson Lake water quality
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Halverson Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Very murky, less than 3 ft of visibility. Phosphorus level: 51 µg/L. Chlorophyll-a: 16.7 µg/L. Trophic State Index: 60.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3 ft | Not graded |
| Phosphorus | 51 µg/L | Not graded |
| Chlorophyll-a (Algae) | 16.7 µg/L | Not graded |
| Trophic State Index (TSI) | 60 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Halverson Lake
Compare lakeside cabins, hotels, and vacation rentals near Halverson Lake in Polk 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 Halverson Lake
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Fishing Halverson Lake
Ice Season
Historical ice data from Minnesota DNR (4 observations).
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 1992-04-09 (1992) | 1994-04-15 (1994) |
| Ice-In | 1992-11-15 (1992) | 1992-11-15 (1992) |
Most recent ice-out: 1994-04-15
Graded lakes near Halverson Lake
Halverson Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Polk County
Frequently asked questions about Halverson Lake
What is the water quality grade for Halverson Lake?
- Halverson Lake in Polk County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 3 ft visibility. Phosphorus: 51 µg/L. Chlorophyll-a (algae): 16.7 µg/L.
Is Halverson Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Halverson Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Algae concentration (chlorophyll-a) is 16.7 µg/L. Always check local health department advisories before swimming.
When does Halverson Lake thaw?
- Halverson Lake typically has ice-out around Apr 14.
Explore Halverson Lake across LakeGrade
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Where this data comes from
4 measurements from 1 monitoring station, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA4 samples · 2023
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
- 2120 B ~ Color in Water by Visual Comparison
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
Ice data from Minnesota DNR Climate