Unl Lake
Unl Lake in Cape May County, New Jersey has a water quality grade of A (Excellent). Water clarity: 5.6 ft visibility. Phosphorus: 18.3 µg/L. Chlorophyll-a (algae): 6.3 µg/L.
- Clarity
- 5.6 ft
- Type
- Mesotrophic
- Public access
- Yes
Unl Lake is a mesotrophic lake in Cape May County, New Jersey. Water quality is graded A based on 2 sampling years through 2021. Limited fish-species data available. Public access is available with 2 public boat landings.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2021-09-28. 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.
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A (Excellent)
Murky, only visible to about 5.6 ft. Phosphorus level: 18.3 µg/L. Chlorophyll-a: 6.3 µg/L. Trophic State Index: 49.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.6 ft | Not graded |
| Phosphorus | 18.3 µg/L | Good |
| Chlorophyll-a (Algae) | 6.3 µg/L | Good |
| Trophic State Index (TSI) | 49 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Unl Lake
Compare lakeside cabins, hotels, and vacation rentals near Unl Lake in Cape May 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.
Top-rated places to stay near Unl Lake
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Recreation & Access
- Corson's Inlet State Park, Ocean CityPublic
- Bayview Drive, StrathmerePublic
Named access points from the USGS National Boat Ramps inventory, snapped within 5 km. More lakes with boat ramps
Fishing Unl Lake
EPA Impairment Status
Unl Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NJ02040302080010-01 · Official waterbody report · Matched by proximity (2.44 km)
County Ranking
Ranked #1 of 1 lakes in Cape May County
Nearby Lakes in Cape May County
Frequently asked questions about Unl Lake
Where is Unl Lake?
- Unl Lake is a lake in Cape May County, New Jersey. LakeQuality grades it A for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Unl Lake?
- Unl Lake in Cape May County, New Jersey has a water quality grade of A (Excellent). Water clarity: 5.6 ft visibility. Phosphorus: 18.3 µg/L. Chlorophyll-a (algae): 6.3 µg/L.
Is Unl Lake safe to swim in?
- Excellent for swimming, crystal clear water with minimal algae. Unl Lake has a water quality grade of A (Excellent). Algae concentration (chlorophyll-a) is 6.3 µg/L. Always check local health department advisories before swimming.
Are there boat ramps on Unl Lake?
- Unl Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Corson's Inlet State Park, Ocean City, Bayview Drive, Strathmere. Public access is listed as yes.
Explore Unl Lake across LakeGrade
More New Jersey Lake Rankings
Other Grade A Lakes in New Jersey
Mesotrophic Lakes in New Jersey
Where this data comes from
30 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_BFBM30 samples · 2021
Analytical methods
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
Monitoring station identifiers (2)
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
Named boat-access points from the USGS National Boat Ramps inventory