Pickerel Cove Upstream Lake
Belknap County, New HampshireView mapDirections
This is the name NHDES records for this water. It can describe one sampling location rather than the water as a whole.
NHDES publishes the water-quality measurements for Pickerel Cove Upstream Lake. Here is what has been measured.
- Eutrophic
- Impaired · Biotoxins
- Limited data
Pickerel Cove Upstream Lake in Belknap County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Phosphorus: 29 µg/L.
Pickerel Cove Upstream Lake is a productive, nutrient-rich eutrophic lake in Belknap County, New Hampshire. 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. Methodology: how these readings are compared.
Swimming conditions
Readings onlyBacteria advisory
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Pickerel Cove Upstream Lake is listed impaired under Clean Water Act §303(d) (IR 5) for biotoxins, mercury, nuisance exotic species, pH / acidity. Check local advisories before you swim.
Whether Pickerel Cove Upstream Lake is safe to swim in today is a call for the New Hampshire Department of Environmental Services and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Pickerel Cove Upstream Lake
These are the measurements NHDES publishes for Pickerel Cove Upstream Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 29 µg/L. TSI 53.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 29µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 53 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Pickerel Cove Upstream Lake
Answers come straight from the public measurements and survey records on this page.
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Stays 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 readings cover nutrients and algae, not lodging. Cabins and rentals around Pickerel Cove Upstream Lake are listed below.
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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 5).
Causes of impairment
Designated uses not supporting: Aquatic life, Fish consumption, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NHLAK700020110-02-01 · Official waterbody report
Nearby Lakes in Belknap County
Frequently asked questions about Pickerel Cove Upstream Lake
Where is Pickerel Cove Upstream Lake?
- Pickerel Cove Upstream Lake is in Belknap County, New Hampshire. This is the name NHDES records for this water. It can describe one sampling location rather than the water as a whole. Its water-quality measurements are published by NHDES and shown on this page as reported.
What is the water quality of Pickerel Cove Upstream Lake?
- Pickerel Cove Upstream Lake in Belknap County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Phosphorus: 29 µg/L.
Is Pickerel Cove Upstream Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Pickerel Cove Upstream Lake is listed impaired under Clean Water Act §303(d) (IR 5) for biotoxins, mercury, nuisance exotic species, pH / acidity. Check local advisories before you swim.
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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)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database