Perch Pond
Grafton County, New Hampshire45 acresView mapDirections
No nutrient or algae sampling on record from NHDES for this lake.
- Impaired · Mercury
- 45 ft max depth
Perch Pond in Grafton County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Maximum depth: 45 ft. Surface area: 45 acres.
Perch Pond is a 45-acre lake in Grafton County, New Hampshire with a maximum depth of 45 feet (12-foot average).
Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.
What Perch Pond is good for
From access and monitoring records, not editorial picks.
- Deep water45 ft surveyed max depth
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Perch Pond is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, pH / acidity. Check local advisories before you swim.
Whether Perch Pond 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 Perch Pond
These are the measurements NHDES publishes for Perch 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 Perch Pond
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
45 ft
Average depth
11.5 ft
Surface area
45 acres
Shoreline
1.4 mi
The depth above comes from a bathymetric survey of this lake, not from a regional estimate.
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Fishing Perch Pond
EPA Impairment Status
Perch Pond is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
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 NHLAK700010402-07 · Official waterbody report
Nearby Lakes in Grafton County
Frequently asked questions about Perch Pond
Where is Perch Pond?
- Perch Pond is a lake in Grafton County, New Hampshire. Its water-quality measurements are published by NHDES and shown on this page as reported.
What is the water quality of Perch Pond?
- Perch Pond in Grafton County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Maximum depth: 45 ft. Surface area: 45 acres.
Is Perch Pond safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Perch Pond is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, pH / acidity. Check local advisories before you swim.
How deep is Perch Pond?
- Perch Pond has a maximum depth of 45 feet and an average depth of 11.5 feet. The lake covers 45 acres.
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Where this data comes from
Measurements for Perch Pond 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