Helmer_nelson Pond East End Beaver House
Helmer_nelson Pond East End Beaver House in Cook County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 2.5 ft visibility.
- Clarity
- 2.5 ft
- Typical in August
- 67°F
- Trend
- ↓ Declining
Next lake in Cook County
Why Helmer_nelson Pond East End Beaver House 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 Helmer_nelson Pond East End Beaver House, the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. Sampling here has recorded water clarity, but not 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.
Helmer_nelson Pond East End Beaver House is a lake in Cook County, Minnesota. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2021-09-21. Grade methodology: LakeGrade methodology.
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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 Helmer_nelson Pond East End Beaver House
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Very murky, less than 2.5 ft of visibility. Trophic State Index: 64.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.5 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 64 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Helmer_nelson Pond East End Beaver House
Compare lakeside cabins, hotels, and vacation rentals near Helmer_nelson Pond East End Beaver House in Cook 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.
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Water Temperature
Helmer_nelson Pond East End Beaver House typically sits around 67°F at the surface in August. Summer average is about 69°F. Usually warmest in Jun (about 70°F) and coldest in May (about 48°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 27 field readings (2011–2025) via the EPA Water Quality Portal. See the full Helmer_nelson Pond East End Beaver House water temperature breakdown →
Fishing Helmer_nelson Pond East End Beaver House
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -14.114 m/yr | 3 |
| Phosphorus | ↑ Improving | -8.73 µg/L/yr | 5 |
| Chlorophyll-a | ↓ Declining | +4.56 µg/L/yr | 4 |
Graded lakes near Helmer_nelson Pond East End Beaver House
Helmer_nelson Pond East End Beaver House has no grade, but these lakes within a short drive do.
Nearby Lakes in Cook County
Frequently asked questions about Helmer_nelson Pond East End Beaver House
What is the water quality grade for Helmer_nelson Pond East End Beaver House?
- Helmer_nelson Pond East End Beaver House in Cook County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 2.5 ft visibility.
Is Helmer_nelson Pond East End Beaver House safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Helmer_nelson Pond East End Beaver House is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
What is the water temperature of Helmer_nelson Pond East End Beaver House?
- Helmer_nelson Pond East End Beaver House typically sits around 67°F at the surface in August, from 27 EPA Water Quality Portal field readings (2011–2025). That is a typical value for the month, not a live reading.
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Where this data comes from
12 measurements from 1 monitoring station, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Grand Portage Reservation
GPC5_WQX12 samples · 2021
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.