Silver Lake
Carroll County, New Hampshire969 acresView mapDirections
No nutrient or algae sampling on record from NHDES for this lake.
- Impaired · Mercury
- 164 ft max depth
Silver Lake in Carroll County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Maximum depth: 164 ft. Surface area: 969 acres.
Silver Lake is a 969-acre lake in Carroll County, New Hampshire with a maximum depth of 164 feet (47-foot average).
Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.
What Silver Lake is good for
From access and monitoring records, not editorial picks.
- Deep water164 ft surveyed max depth
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Silver Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury, pH / acidity. Check local advisories before you swim.
Whether Silver Lake is safe to swim in today is a call for the New Hampshire Department of Environmental Services and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Silver Lake
These are the measurements NHDES publishes for Silver Lake, 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 Silver Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
164 ft
Average depth
46.9 ft
Surface area
969 acres
Shoreline
8.1 mi
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Fishing Silver Lake
EPA Impairment Status
Silver Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Aquatic life, Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NHLAK600020801-06-01 · Official waterbody report
Nearby Lakes in Carroll County
Frequently asked questions about Silver Lake
Where is Silver Lake?
- Silver Lake is a lake in Carroll County, New Hampshire. Its water-quality measurements are published by NHDES and shown on this page as reported.
What is the water quality of Silver Lake?
- Silver Lake in Carroll County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Maximum depth: 164 ft. Surface area: 969 acres.
Is Silver Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Silver Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury, pH / acidity. Check local advisories before you swim.
How deep is Silver Lake?
- Silver Lake has a maximum depth of 164 feet and an average depth of 46.9 feet. The lake covers 969 acres.
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Where this data comes from
Measurements for Silver Lake 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