Pickerel Cove Upstream Lake
Pickerel Cove Upstream Lake in Belknap County, New Hampshire has a water quality grade of D (Nutrient-rich). Phosphorus: 29 µg/L.
- Type
- Eutrophic
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Pickerel Cove Upstream Lake →
Pickerel Cove Upstream Lake is a productive, nutrient-rich eutrophic lake in Belknap County, New Hampshire. Water quality is graded D based on 1 sampling years through 2025. Compared to the 26 other monitored lakes in Belknap County, Pickerel Cove Upstream Lake ranks #27 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-08-04. 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.
Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum
Water Quality Grade: D (Nutrient-rich)
No clarity data. Phosphorus level: 29 µg/L. Trophic State Index: 53.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 29 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 53 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Pickerel Cove Upstream Lake
Compare lakeside cabins, hotels, and vacation rentals near Pickerel Cove Upstream Lake in Belknap County, New Hampshire — 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. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Pickerel Cove Upstream Lake are listed below.
Top-rated places to stay near Pickerel Cove Upstream Lake
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Fishing Pickerel Cove Upstream Lake
EPA Impairment Status
Pickerel Cove Upstream Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NHLAK700020110-01 · Official waterbody report · Matched by proximity (1.66 km)
County Ranking
Ranked #27 of 27 lakes in Belknap County
Nearby Lakes in Belknap County
Frequently asked questions about Pickerel Cove Upstream Lake
Where is Pickerel Cove Upstream Lake?
- Pickerel Cove Upstream Lake is a lake in Belknap County, New Hampshire. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Pickerel Cove Upstream Lake?
- Pickerel Cove Upstream Lake in Belknap County, New Hampshire has a water quality grade of D (Nutrient-rich). Phosphorus: 29 µg/L.
Is Pickerel Cove Upstream Lake safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Pickerel Cove Upstream Lake has a water quality grade of D (Nutrient-rich). Always check local health department advisories before swimming.
Explore Pickerel Cove Upstream Lake across LakeGrade
More New Hampshire Lake Rankings
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Top 25 by Secchi water clarity
Grade A/B + low algae filter
Panfish-rich, public access
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Other Grade D Lakes in New Hampshire
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Rockingham County · Nutrient-rich
Rockingham County · Nutrient-rich
Rockingham County · Nutrient-rich
Hillsborough County · Nutrient-rich
Hillsborough County · Nutrient-rich
Eutrophic Lakes in New Hampshire
Where this data comes from
21 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- New Hampshire Department Of Environmental Services (BEACH)
1111330021 samples · 2020–2025
Analytical methods
- 10-115-01-1 F ~ LACHAT; Total Phosphorus- Manual persulfate digest
- Turbidity by Nephelometry
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
Impairment status from EPA ATTAINS 303(d) database