Collins Pond
Sussex County, New Jersey35 acresView mapDirections
NJDEP publishes the water-quality measurements for Collins Pond. Here is what has been measured.
- Eutrophic
- Impaired · Metals (other than mercury)
- Limited data
Collins Pond in Sussex County, New Jersey has water-quality measurements published by NJDEP, shown here as reported. Water clarity: 6.1 ft visibility. Phosphorus: 17.6 µg/L. Chlorophyll-a (algae): 13.1 µg/L. Surface area: 35 acres.
Collins Pond is a 35-acre productive, nutrient-rich eutrophic lake in Sussex County, New Jersey. Compared to the 17 other monitored lakes in Sussex County, Collins Pond ranks #14 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2021-11-08. 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. Collins Pond is listed impaired under Clean Water Act §303(d) (IR 4A) for metals (other than mercury), pathogens (E. coli, fecal). Check local advisories before you swim.
Whether Collins 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 Collins Pond
These are the measurements NJDEP publishes for Collins Pond, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 6.1 ft. Phosphorus 17.6 µg/L. Chlorophyll-a 13.1 µg/L. TSI 51.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 6.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 17.6µg/L | Fair GoodFairPoor |
| Chlorophyll-a (algae) | 13.1µg/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. | 51 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Collins Pond
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Lake Details
Surface area
35 acres
No bathymetric survey has been published for Collins Pond, so its depth is not documented here.
Stays via Stay22
Stays near Collins Pond
Compare lakeside cabins, hotels, and vacation rentals near Collins Pond in Sussex 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 Collins Pond are listed below.
Top-rated places to stay near Collins Pond
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Fishing Collins Pond
Reservoir Info (USACE NID)
Collins Pond is a man-made reservoir impounded by the Hawthorne Lake Dam (completed 1900), built primarily for recreation on the Wallkill-TR; earth-type dam, 8 ft tall and 165 ft long.
- Surface area
- 35 ac
- Normal storage
- 149 ac-ft
- Max storage
- 167 ac-ft
- Drainage area
- 0.4 sq mi
- Hazard class
- Low
- Owner
- Hawthorne Park Club
Source: USACE National Inventory of Dams, NID ID NJ01036 · Operator website · Matched by proximity (0.87 km)
EPA Impairment Status
Collins Pond is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Drinking water, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NJ02020007010020-01 · Official waterbody report
Nearby Lakes in Sussex County
Frequently asked questions about Collins Pond
Where is Collins Pond?
- Collins Pond is a lake in Sussex County, New Jersey. Its water-quality measurements are published by NJDEP and shown on this page as reported.
What is the water quality of Collins Pond?
- Collins Pond in Sussex County, New Jersey has water-quality measurements published by NJDEP, shown here as reported. Water clarity: 6.1 ft visibility. Phosphorus: 17.6 µg/L. Chlorophyll-a (algae): 13.1 µg/L. Surface area: 35 acres.
Is Collins Pond safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Collins Pond is listed impaired under Clean Water Act §303(d) (IR 4A) for metals (other than mercury), pathogens (E. coli, fecal). Check local advisories before you swim.
Explore Collins Pond across LakeQuality
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Where this data comes from
31 measurements from 2 monitoring stations, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- NJDEP Bureau of Freshwater and Biological Monitoring
NJDEP_BFBM31 samples · 2021
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