Alton Pond is a lake in Washington County, Rhode Island. Its water-quality measurements are published by RIDEM and shown on this page as reported.

How deep is Alton Pond?

Alton Pond has a maximum depth of 13.8 feet. The lake covers 44 acres.

Alton Pond

Washington County, Rhode Island44 acresView map Directions

No nutrient or algae sampling on record from RIDEM for this lake.

Max depth

13.8 ft

Bathymetric survey

Area

44 acres

Surface area

Shoreline

2.1 mi

Measured length

Impaired · Mercury
14 ft max depth

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Alton Pond in Washington County, Rhode Island has water-quality measurements published by RIDEM, shown here as reported. Maximum depth: 13.8 ft. Surface area: 44 acres.

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Alton Pond is a 44-acre lake in Washington County, Rhode Island with a maximum depth of 14 feet.

Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Alton Pond is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury, nuisance exotic species. Check local advisories before you swim.

Whether Alton Pond 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.

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Water quality measurements for Alton Pond

These are the measurements RIDEM publishes for Alton Pond, 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 Alton Pond

Answers come straight from the public measurements and survey records on this page.

Lake Details

Max depth

13.8 ft

Surface area

44 acres

Shoreline

2.1 mi

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Stays near Alton Pond

Compare lakeside cabins, hotels, and vacation rentals near Alton Pond in Washington County, Rhode Island — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

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Fishing Alton Pond

→ Alton Pond fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Alton Pond is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).

Causes of impairment

MercuryNuisance exotic species

Designated uses not supporting: Aquatic life, Fish consumption.

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit RI0008040L-01 · Official waterbody report

Nearby Lakes in Washington County

Watchaug Pond4.3 miView →School House Pond3.9 miView →Ashville Pond4.5 miView →Locustville Pond4.9 ft clear5 miView →Blue Pond4.9 miView →Wyoming Pond5.4 miView →

Frequently asked questions about Alton Pond

Where is Alton Pond?: Alton Pond is a lake in Washington County, Rhode Island. Its water-quality measurements are published by RIDEM and shown on this page as reported.
What is the water quality of Alton Pond?: Alton Pond in Washington County, Rhode Island has water-quality measurements published by RIDEM, shown here as reported. Maximum depth: 13.8 ft. Surface area: 44 acres.
Is Alton Pond safe to swim in?: Nutrient and algae readings are not a swimming clearance. Alton Pond is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury, nuisance exotic species. Check local advisories before you swim.
How deep is Alton Pond?: Alton Pond has a maximum depth of 13.8 feet. The lake covers 44 acres.