Flat River Reservoir
Kent County, Rhode Island593 acresView mapDirections
No nutrient or algae sampling on record from RIDEM for this lake.
- Impaired · Mercury
- 36 ft max depth
Flat River Reservoir in Kent County, Rhode Island has water-quality measurements published by RIDEM, shown here as reported. Maximum depth: 36.1 ft. Surface area: 593 acres.
Flat River Reservoir is a 593-acre lake in Kent County, Rhode Island with a maximum depth of 36 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.
What Flat River Reservoir is good for
From access and monitoring records, not editorial picks.
- Deep water36.1 ft surveyed max depth
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Flat River Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, nuisance exotic species. Check local advisories before you swim.
Whether Flat River Reservoir is safe to swim in today is a call for the Rhode Island Department of Environmental Management and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Flat River Reservoir
These are the measurements RIDEM publishes for Flat 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 Flat River Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
36.1 ft
Surface area
593 acres
Shoreline
20.3 mi
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Stays near Flat River Reservoir
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Fishing Flat River Reservoir
EPA Impairment Status
Flat 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, Fish consumption.
Source: EPA ATTAINS assessment unit RI0006013L-01 · Official waterbody report
Nearby Lakes in Kent County
Frequently asked questions about Flat River Reservoir
Where is Flat River Reservoir?
- Flat River Reservoir is a lake in Kent County, Rhode Island. Its water-quality measurements are published by RIDEM and shown on this page as reported.
What is the water quality of Flat River Reservoir?
- Flat River Reservoir in Kent County, Rhode Island has water-quality measurements published by RIDEM, shown here as reported. Maximum depth: 36.1 ft. Surface area: 593 acres.
Is Flat River Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Flat River Reservoir 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 Flat River Reservoir?
- Flat River Reservoir has a maximum depth of 36.1 feet. The lake covers 593 acres.
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Where this data comes from
Measurements for Flat 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