Field Pond
Essex County, Massachusetts57 acresView mapDirections
Nutrients and algae sit mid-range for this region.
↓ down from B at the last regrade
- Mesotrophic
- Impaired · Algal growth
- #5 of 7 in the county
- 46 ft max depth
- Limited data
Field Pond in Essex County, Massachusetts has a water quality grade of C (Fair). Chlorophyll-a (algae): 6.5 µg/L. Surface area: 57 acres.
- Max depth
- ~46 ft est.
- Area
- 57 acres
- Type
- Mesotrophic
- Chlorophyll-a
- 6.5 µg/L
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Field Pond is a 57-acre mesotrophic lake in Essex County, Massachusetts with an estimated average depth of about 46 feet. Water quality is graded C based on 1 sampling years through 2017. Compared to the 6 other monitored lakes in Essex County, Field Pond ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, MassDEP, last sampled 2017-09-14. Grade methodology: LakeQuality methodology.
Swimming Safety
Grade onlyLimited data
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.
The C is nutrients and algae, not a swimming clearance. Field Pond is listed impaired under Clean Water Act §303(d) (IR 4C) for algal growth, nuisance exotic species. Check local advisories before you swim.
Water Quality Grade: C (Fair)
No clarity data. Chlorophyll-a 6.5 µg/L. TSI 49. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | 6.5 µg/L | Fair |
| Trophic State Index (TSI) | 49 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~46 ft est. |
| Average Depth | ~11 ft est. |
| Surface Area | 57 acres |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Massachusetts has not published bathymetry for Field Pond.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Fishing Field Pond
Reservoir Info (USACE NID)
Field Pond is a man-made reservoir impounded by the Field Pond Dam (completed 1930), built primarily for recreation on the Tributary to Skug River; earth-type dam, 16 ft tall and 630 ft long.
- Surface area
- 57 ac
- Normal storage
- 290 ac-ft
- Max storage
- 530 ac-ft
- Drainage area
- 0.91 sq mi
- Hazard class
- Significant
- Owner
- MA Department of Conservation and Recreation
Source: USACE National Inventory of Dams, NID ID MA01134 · Operator website
EPA Impairment Status
Field Pond is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4C).
Causes of impairment
Source: EPA ATTAINS assessment unit MA92019 · Official waterbody report
County Ranking
Ranked #5 of 7 lakes in Essex County
Nearby Lakes in Essex County
Frequently asked questions about Field Pond
Where is Field Pond?
- Field Pond is a lake in Essex County, Massachusetts. LakeQuality grades it C for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Field Pond?
- Field Pond in Essex County, Massachusetts has a water quality grade of C (Fair). Chlorophyll-a (algae): 6.5 µg/L. Surface area: 57 acres.
Is Field Pond safe to swim in?
- The C is nutrients and algae, not a swimming clearance. Field Pond is listed impaired under Clean Water Act §303(d) (IR 4C) for algal growth, nuisance exotic species. Check local advisories before you swim.
How deep is Field Pond?
- No published bathymetric survey covers Field Pond, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 46 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 57 acres.
Explore Field Pond across LakeQuality
Species activity outlook by water temperature and season
Where to stay at Massachusetts's top lakes, each with its grade
Moderate nutrients, good water quality
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Other Grade C Lakes in Massachusetts
Mesotrophic Lakes in Massachusetts
Where this data comes from
3 measurements from 1 monitoring station, 2017. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Massachusetts Department of Environmental Protection (MassDEP)
MASSDEP3 samples · 2017
Analytical methods
- 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
Lake size & watershed from HydroLAKES (HydroSHEDS)