Three-Finger Cove Lake
Three-Finger Cove Lake in Sussex County, New Jersey has a water quality grade of D (Nutrient-rich). Water clarity: 3.9 ft visibility. Phosphorus: 40 µg/L.
- Clarity
- 3.9 ft
- Type
- Eutrophic
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Three-Finger Cove Lake →
Three-Finger Cove Lake is a productive, nutrient-rich eutrophic lake in Sussex County, New Jersey. Water quality is graded D based on 1 sampling years through 2020. Compared to the 17 other monitored lakes in Sussex County, Three-Finger Cove Lake ranks #11 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2020-10-28. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyBacteria advisory
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.
Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum
Water Quality Grade: D (Nutrient-rich)
Murky, only visible to about 3.9 ft. Phosphorus level: 40 µg/L. Trophic State Index: 57.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.9 ft | Not graded |
| Phosphorus | 40 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 57 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Three-Finger Cove Lake
Compare lakeside cabins, hotels, and vacation rentals near Three-Finger Cove Lake 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 grade measures nutrients and algae, not lodging — cabins and rentals around Three-Finger Cove Lake are listed below.
Top-rated places to stay near Three-Finger Cove Lake
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Fishing Three-Finger Cove Lake
EPA Impairment Status
Three-Finger Cove 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 NJ02040105070010-01 · Official waterbody report · Matched by proximity (2.36 km)
County Ranking
Ranked #11 of 18 lakes in Sussex County
Nearby Lakes in Sussex County
Frequently asked questions about Three-Finger Cove Lake
Where is Three-Finger Cove Lake?
- Three-Finger Cove Lake is a lake in Sussex County, New Jersey. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Three-Finger Cove Lake?
- Three-Finger Cove Lake in Sussex County, New Jersey has a water quality grade of D (Nutrient-rich). Water clarity: 3.9 ft visibility. Phosphorus: 40 µg/L.
Is Three-Finger Cove Lake safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Three-Finger Cove Lake has a water quality grade of D (Nutrient-rich). Always check local health department advisories before swimming.
Explore Three-Finger Cove Lake across LakeGrade
More New Jersey Lake Rankings
Other Grade D Lakes in New Jersey
Eutrophic Lakes in New Jersey
Where this data comes from
20 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- Princeton Hydro LLC
PRINCETONHYDRO20 samples · 2020
Analytical methods
- 4500 P B ~ Phosphorus, sample preparation method
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