Clark Pond is a lake in Grafton County, New Hampshire. Its water-quality measurements are published by NHDES and shown on this page as reported.

How deep is Clark Pond?

Clark Pond has a maximum depth of 45 feet and an average depth of 16.7 feet. The lake covers 104 acres.

Are there boat ramps on Clark Pond?

Clark Pond has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Clark Pond. Public access is listed as yes.

Can I fish at Clark Pond?

Clark Pond has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by New Hampshire's fish and wildlife agency, so check its current regulations before you go.

Clark Pond

Grafton County, New Hampshire104 acresView map Directions

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

Max depth

45 ft

Bathymetric survey

Area

104 acres

Surface area

Shoreline

2.9 mi

Measured length

Impaired · Mercury
45 ft max depth
Public access

See the measurements Directions Where to stay

Clark Pond in Grafton County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Maximum depth: 45 ft. Surface area: 104 acres.

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Clark Pond is a 104-acre lake in Grafton County, New Hampshire with a maximum depth of 45 feet (17-foot average). Limited fish-species data available. Public access is available with 1 public boat landing.

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

What Clark Pond is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Deep water45 ft surveyed max depth

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Clark Pond is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, pH / acidity. Check local advisories before you swim.

Whether Clark 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.

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Water quality measurements for Clark Pond

These are the measurements NHDES publishes for Clark 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 Clark Pond

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

Lake Details

Max depth

45 ft

Average depth

16.7 ft

Surface area

104 acres

Shoreline

2.9 mi

Public access

Yes

Listed by NHDES

The depth above comes from a bathymetric survey of this lake, not from a regional estimate.

Recreation & Access

Boat Landings

Yes

Public Access

Clark PondPublic

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

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Stays near Clark Pond

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Fishing Clark Pond

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

EPA Impairment Status

Clark Pond is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

MercurypH / acidity

Designated uses not supporting: Aquatic life, Fish consumption.

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

Source: EPA ATTAINS assessment unit NHLAK801060101-02 · Official waterbody report

Nearby Lakes in Grafton County

Goose Pond-Deep SpotMesotrophic2.8 miView →Reservoir Pond-Deep SpotMesotrophic4 miView →Lary Pond3.3 miView →Canaan Street Lake-Deep SpotOligotrophic4.8 miView →Cummins Pond4.4 miView →Pout Pond6.1 miView →

Frequently asked questions about Clark Pond

Where is Clark Pond?: Clark 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 Clark Pond?: Clark Pond in Grafton County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Maximum depth: 45 ft. Surface area: 104 acres.
Is Clark Pond safe to swim in?: Nutrient and algae readings are not a swimming clearance. Clark 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 Clark Pond?: Clark Pond has a maximum depth of 45 feet and an average depth of 16.7 feet. The lake covers 104 acres.
Are there boat ramps on Clark Pond?: Clark Pond has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Clark Pond. Public access is listed as yes.
Can I fish at Clark Pond?: Clark Pond has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by New Hampshire's fish and wildlife agency, so check its current regulations before you go.