Morris County Lake Quality
New Jersey, 11 lakes, average grade D (Nutrient-rich)
Only 11 lakes in Morris County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. On average, Morris County lakes grade D, with phosphorus loading and reduced clarity showing up across most of the dataset.
Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Budd Lake (D) is the cleanest in the county.
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Quick Answers for Morris County
Planning a trip? Check special fishing regulations for Budd Lake — or check the official New Jersey fishing regulations.
All Lakes in Morris County
11 lakes · 6 graded, 5 not rated6 graded lakes · 5 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | DBudd LakeMorris | D | 3.3 ft | 25.4 µg/L | 25 µg/L | No recent samples | Not recorded |
| 2 | DButler ReservoirMorris | D | 6.9 ft | 18.4 µg/L | 9.1 µg/L | No recent samples | Not recorded |
| 3 | DMid Lake DeepMorris | D | No recent samples | 110 µg/L | No recent samples | No recent samples | Not recorded |
| 4 | DWinnebago LakeMorris | D | 3.8 ft | 50.9 µg/L | 26.3 µg/L | No recent samples | Not recorded |
| 5 | FChapin PondMorris | F | 2.8 ft | 40.7 µg/L | 45.3 µg/L | No recent samples | Not recorded |
| 6 | FMid Lake SurfaceMorris | F | No recent samples | 100 µg/L | 48 µg/L | No recent samples | Not recorded |
| NRNon Treatment Open Water LakeMorris | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRSpring Garden Lake EastMorris | NR | 2 ft | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRSpring Garden Lake Mid LakeMorris | NR | 2 ft | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRSpring Garden Lake WestMorris | NR | 1.8 ft | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRTreatment Shoreline LakeMorris | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded |
NR = not rated: the monitoring record does not meet the evidence bar for a grade. That is EPA Integrated Reporting Category 3 (insufficient information), not a failing grade. How grading works.
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Other Counties in New Jersey
See how Morris County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 49 states and 2 Canadian provinces.
Source: EPA National Aquatic Resource Surveys, 2026.