Sargent Pond
Worcester County, Massachusetts66 acresView mapDirections
Nutrients and algae sit mid-range for this region.
↓ down from B at the last regrade
- Mesotrophic
- Impaired · Mercury
- #19 of 24 in the county
- 33 ft max depth
- Limited data
Sargent Pond in Worcester County, Massachusetts has a water quality grade of C (Fair). Chlorophyll-a (algae): 5.2 µg/L. Surface area: 66 acres.
- Max depth
- ~33 ft est.
- Area
- 66 acres
- Type
- Mesotrophic
- Chlorophyll-a
- 5.2 µg/L
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Watch Sargent Pond’s letter
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Sargent Pond is a 66-acre mesotrophic lake in Worcester County, Massachusetts with an estimated average depth of about 33 feet. Water quality is graded C based on 1 sampling years through 2016. Compared to the 23 other monitored lakes in Worcester County, Sargent Pond ranks #19 for water quality.
Source: EPA Water Quality Portal sampling records, MassDEP, last sampled 2016-09-07. 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. Sargent Pond is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, nuisance exotic species. Check local advisories before you swim.
Water Quality Grade: C (Fair)
No clarity data. Chlorophyll-a 5.2 µg/L. TSI 47. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | 5.2 µg/L | Fair |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~33 ft est. |
| Average Depth | ~14 ft est. |
| Surface Area | 66 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 Sargent 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 Sargent Pond
Reservoir Info (USACE NID)
Sargent Pond is a man-made reservoir impounded by the Sargent Pond Dam, built primarily for recreation on the Town Meadow Brook; earth-type dam, 15 ft tall and 88 ft long.
- Surface area
- 66 ac
- Normal storage
- 396 ac-ft
- Max storage
- 660 ac-ft
- Drainage area
- 2.78 sq mi
- Hazard class
- Significant
- Owner
- Hoang Quach and Quan M Vo;Lake Sargent Association
Source: USACE National Inventory of Dams, NID ID MA00986 · Operator website
EPA Impairment Status
Sargent Pond 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 MA42049 · Official waterbody report
County Ranking
Ranked #19 of 24 lakes in Worcester County
Nearby Lakes in Worcester County
Frequently asked questions about Sargent Pond
Where is Sargent Pond?
- Sargent Pond is a lake in Worcester County, Massachusetts. LakeQuality grades it C for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Sargent Pond?
- Sargent Pond in Worcester County, Massachusetts has a water quality grade of C (Fair). Chlorophyll-a (algae): 5.2 µg/L. Surface area: 66 acres.
Is Sargent Pond safe to swim in?
- The C is nutrients and algae, not a swimming clearance. Sargent Pond is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, nuisance exotic species. Check local advisories before you swim.
How deep is Sargent Pond?
- No published bathymetric survey covers Sargent Pond, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 33 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 66 acres.
Explore Sargent Pond across LakeQuality
Species activity outlook by water temperature and season
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Moderate nutrients, good water quality
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Where this data comes from
3 measurements from 1 monitoring station, 2016. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Massachusetts Department of Environmental Protection (MassDEP)
MASSDEP3 samples · 2016
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)