Weweantic River Reservoir
Plymouth County, Massachusetts37 acresView mapDirections
No nutrient or algae sampling on record from MassDEP for this lake.
- Impaired · Algal growth
- 3 ft max depth
Weweantic River Reservoir in Plymouth County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Maximum depth: 3 ft. Surface area: 37 acres.
Weweantic River Reservoir is a 37-acre lake in Plymouth County, Massachusetts with a maximum depth of 3 feet.
Source: EPA Water Quality Portal sampling records, MassDEP. Methodology: how these readings are compared.
Swimming conditions
No readingRecreation use not supported
Nutrient and algae readings are not a swimming clearance. Weweantic River Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, nuisance exotic species, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Weweantic River Reservoir is safe to swim in today is a call for the Massachusetts Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Weweantic River Reservoir
These are the measurements MassDEP publishes for Weweantic River Reservoir, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. TSI undefined.
Ask about Weweantic River Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
3 ft
Surface area
37 acres
Shoreline
1.4 mi
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Fishing Weweantic River Reservoir
EPA Impairment Status
Weweantic River Reservoir 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: Aquatic life, Recreation, Other.
Source: EPA ATTAINS assessment unit MA95033 · Official waterbody report
Nearby Lakes in Plymouth County
Frequently asked questions about Weweantic River Reservoir
Where is Weweantic River Reservoir?
- Weweantic River Reservoir is a lake in Plymouth County, Massachusetts. Its water-quality measurements are published by MassDEP and shown on this page as reported.
What is the water quality of Weweantic River Reservoir?
- Weweantic River Reservoir in Plymouth County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Maximum depth: 3 ft. Surface area: 37 acres.
Is Weweantic River Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Weweantic River Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, nuisance exotic species, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Weweantic River Reservoir?
- Weweantic River Reservoir has a maximum depth of 3 feet. The lake covers 37 acres.
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Where this data comes from
Measurements for Weweantic River Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database