South Shore Marina Lake
South Shore Marina Lake in Passaic County, New Jersey has a water quality grade of F (Algae-prone). Phosphorus: 48 µg/L. Chlorophyll-a (algae): 38.9 µg/L.
- Type
- Hypereutrophic
Grade F measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near South Shore Marina Lake →
South Shore Marina Lake is a highly nutrient-loaded hypereutrophic lake in Passaic County, New Jersey. Water quality is graded F based on 2 sampling years through 2025. 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. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyAlgae risk
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.
Algae and nutrients are often high — check current advisories before swimming. Skip the water if you see scum or a paint-like bloom
Water Quality Grade: F (Algae-prone)
No clarity data. Phosphorus level: 48 µg/L. Chlorophyll-a: 38.9 µg/L. Trophic State Index: 63.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 48 µg/L | Poor |
| Chlorophyll-a (Algae) | 38.9 µg/L | Poor |
| Trophic State Index (TSI) | 63 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay 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 grade measures nutrients and algae, not lodging — cabins and rentals around South Shore Marina Lake are listed below.
Top-rated places to stay near South Shore Marina Lake
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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
Source: EPA ATTAINS assessment unit NJ02030103070020-01 · Official waterbody report · Matched by proximity (2.14 km)
County Ranking
Ranked #5 of 6 lakes in Passaic County
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. LakeQuality grades it F for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for South Shore Marina Lake?
- South Shore Marina Lake in Passaic County, New Jersey has a water quality grade of F (Algae-prone). Phosphorus: 48 µg/L. Chlorophyll-a (algae): 38.9 µg/L.
Is South Shore Marina Lake safe to swim in?
- Algae and nutrients are often high — check current advisories before swimming. Skip the water if you see scum or a paint-like bloom. South Shore Marina Lake has a water quality grade of F (Algae-prone). Algae concentration (chlorophyll-a) is 38.9 µg/L. Always check local health department advisories before swimming.
Explore South Shore Marina Lake across LakeGrade
More New Jersey Lake Rankings
Other Grade F Lakes in New Jersey
Hypereutrophic Lakes in New Jersey
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)
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