Spring Garden Lake Mid Lake
Morris County, New JerseyView mapDirections
NJDEP publishes the water-quality measurements for Spring Garden Lake Mid Lake. Here is what has been measured.
- Impaired · Impaired biota (cause unknown)
- Limited data
Spring Garden Lake Mid Lake in Morris County, New Jersey has water-quality measurements published by NJDEP, shown here as reported. Water clarity: 2 ft visibility.
Spring Garden Lake Mid Lake is a lake in Morris County, New Jersey.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2026-07-08. Methodology: how these readings are compared.
Swimming conditions
No readingBacteria advisory
Nutrient and algae readings are not a swimming clearance. Spring Garden Lake Mid Lake is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown), metals (other than mercury), nutrients (phosphorus, nitrogen), pathogens (E. coli, fecal), salinity / chlorides, turbidity. Check local advisories before you swim.
Whether Spring Garden Lake Mid 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 Spring Garden Lake Mid Lake
These are the measurements NJDEP publishes for Spring Garden Lake Mid Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 2 ft of visibility. TSI 67.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 67 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Spring Garden Lake Mid Lake
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near Spring Garden Lake Mid Lake
Compare lakeside cabins, hotels, and vacation rentals near Spring Garden Lake Mid Lake in Morris 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 Spring Garden Lake Mid Lake
Prices for Oct 9–11, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Follow Spring Garden Lake Mid Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Spring Garden Lake Mid Lake
EPA Impairment Status
Spring Garden Lake Mid 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: Drinking water, Aquatic life, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NJ02030103010150-01 · Official waterbody report
Nearby Lakes in Morris County
Frequently asked questions about Spring Garden Lake Mid Lake
Where is Spring Garden Lake Mid Lake?
- Spring Garden Lake Mid Lake is a lake in Morris County, New Jersey. Its water-quality measurements are published by NJDEP and shown on this page as reported.
What is the water quality of Spring Garden Lake Mid Lake?
- Spring Garden Lake Mid Lake in Morris County, New Jersey has water-quality measurements published by NJDEP, shown here as reported. Water clarity: 2 ft visibility.
Is Spring Garden Lake Mid Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Spring Garden Lake Mid Lake is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown), metals (other than mercury), nutrients (phosphorus, nitrogen), pathogens (E. coli, fecal), salinity / chlorides, turbidity. Check local advisories before you swim.
Explore Spring Garden Lake Mid Lake across LakeQuality
More lakes in New Jersey
Other Lakes in New Jersey
Eutrophic Lakes in New Jersey
Where this data comes from
6 measurements from 1 monitoring station, 2025–2026. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- Princeton Hydro LLC
PRINCETONHYDRO6 samples · 2025–2026
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