Chapin Pond
Morris County, New JerseyView mapDirections
NJDEP publishes the water-quality measurements for Chapin Pond. Here is what has been measured.
- Hypereutrophic
- Impaired · Impaired biota (cause unknown)
- Limited data
Chapin Pond in Morris County, New Jersey has water-quality measurements published by NJDEP, shown here as reported. Water clarity: 2.8 ft visibility. Phosphorus: 40.7 µg/L. Chlorophyll-a (algae): 45.3 µg/L.
Chapin Pond is a highly nutrient-loaded hypereutrophic lake in Morris County, New Jersey. Compared to the 11 other monitored lakes in Morris County, Chapin Pond ranks #11 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2024-10-15. 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. Chapin Pond is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown), mercury, metals (other than mercury), nutrients (phosphorus, nitrogen), oxygen depletion (low DO), pathogens (E. coli, fecal), toxic organics. Check local advisories before you swim.
Whether Chapin Pond is safe to swim in today is a call for the New Jersey Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Chapin Pond
These are the measurements NJDEP publishes for Chapin Pond, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 2.8 ft of visibility. Phosphorus 40.7 µg/L. Chlorophyll-a 45.3 µg/L. TSI 63.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2.8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 40.7µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | 45.3µg/L | Poor GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 63 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Chapin Pond
Answers come straight from the public measurements and survey records on this page.
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Stays near Chapin Pond
Compare lakeside cabins, hotels, and vacation rentals near Chapin Pond in Morris County, New Jersey — 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 Chapin Pond are listed below.
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Fishing Chapin Pond
EPA Impairment Status
Chapin Pond is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Drinking water, Aquatic life, Fish consumption, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NJ02030103030170-01 · Official waterbody report
Nearby Lakes in Morris County
Frequently asked questions about Chapin Pond
Where is Chapin Pond?
- Chapin Pond is a lake in Morris County, New Jersey. Its water-quality measurements are published by NJDEP and shown on this page as reported.
What is the water quality of Chapin Pond?
- Chapin Pond in Morris County, New Jersey has water-quality measurements published by NJDEP, shown here as reported. Water clarity: 2.8 ft visibility. Phosphorus: 40.7 µg/L. Chlorophyll-a (algae): 45.3 µg/L.
Is Chapin Pond safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Chapin Pond is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown), mercury, metals (other than mercury), nutrients (phosphorus, nitrogen), oxygen depletion (low DO), pathogens (E. coli, fecal), toxic organics. Check local advisories before you swim.
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Where this data comes from
54 measurements from 2 monitoring stations, 2023–2024. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- NJDEP Bureau of Freshwater and Biological Monitoring
NJDEP_BFBM54 samples · 2023–2024
Analytical methods
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
Monitoring station identifiers (2)
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