South Shore Marina Lake
Passaic County, New JerseyView mapDirections
NJDEP publishes the water-quality measurements for South Shore Marina Lake. Here is what has been measured.
- Hypereutrophic
- Impaired · Mercury
South Shore Marina Lake in Passaic County, New Jersey has water-quality measurements published by NJDEP, shown here as reported. Phosphorus: 48 µg/L. Chlorophyll-a (algae): 38.9 µg/L.
South Shore Marina Lake is a highly nutrient-loaded hypereutrophic lake in Passaic County, New Jersey. Compared to the 5 other monitored lakes in Passaic County, South Shore Marina Lake ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-08-19. Methodology: how these readings are compared.
Swimming conditions
Readings onlyAlgae risk
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. South Shore Marina Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, pH / acidity, temperature. Check local advisories before you swim.
Whether South Shore Marina Lake 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 South Shore Marina Lake
These are the measurements NJDEP publishes for South Shore Marina 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 48 µg/L. Chlorophyll-a 38.9 µg/L. TSI 63.
| 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 | 48µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | 38.9µg/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
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Stays near South Shore Marina Lake
Compare lakeside cabins, hotels, and vacation rentals near South Shore Marina Lake in Passaic 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 South Shore Marina Lake are listed below.
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Fishing South Shore Marina Lake
EPA Impairment Status
South Shore Marina Lake 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: Aquatic life, Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NJ02030103070030-01 · Official waterbody report
Nearby Lakes in Passaic County
Frequently asked questions about South Shore Marina Lake
Where is South Shore Marina Lake?
- South Shore Marina Lake is a lake in Passaic County, New Jersey. Its water-quality measurements are published by NJDEP and shown on this page as reported.
What is the water quality of South Shore Marina Lake?
- South Shore Marina Lake in Passaic County, New Jersey has water-quality measurements published by NJDEP, shown here as reported. Phosphorus: 48 µg/L. Chlorophyll-a (algae): 38.9 µg/L.
Is South Shore Marina Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. South Shore Marina Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, pH / acidity, temperature. Check local advisories before you swim.
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Where this data comes from
36 measurements from 1 monitoring station, 2024–2025. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- Montclair State University
NJ_MSU36 samples · 2024–2025
Analytical methods
- 4500 P B ~ Phosphorus, sample preparation method
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
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