Where is Crystal Lake?

Crystal Lake 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 Crystal Lake?

Crystal Lake has a maximum depth of 50 feet and an average depth of 21.3 feet. The lake covers 401 acres.

Are there boat ramps on Crystal Lake?

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

Can I fish at Crystal Lake?

Crystal Lake 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.

Crystal Lake

Grafton County, New Hampshire401 acresView map Directions

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

Max depth

50 ft

Bathymetric survey

Area

401 acres

Surface area

Shoreline

4.8 mi

Measured length

Impaired · Mercury
50 ft max depth
Public access

See the measurements Directions Where to stay

Crystal Lake in Grafton County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Maximum depth: 50 ft. Surface area: 401 acres.

Loading map…

Crystal Lake is a 401-acre lake in Grafton County, New Hampshire with a maximum depth of 50 feet (21-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 Crystal Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Deep water50 ft surveyed max depth

Swimming conditions

No reading

Not rated

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

Whether Crystal 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.

Compare swimming lakes near Albany →

Get alerts for Crystal Lake →

Water quality measurements for Crystal Lake

These are the measurements NHDES publishes for Crystal 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 Crystal Lake

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

Lake Details

Max depth

50 ft

Average depth

21.3 ft

Surface area

401 acres

Shoreline

4.8 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

Crystal LakePublic

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

Stays via Stay22

Stays near Crystal Lake

Compare lakeside cabins, hotels, and vacation rentals near Crystal Lake in Grafton County, New Hampshire — 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.

Top-rated places to stay near Crystal Lake

Prices for Oct 16–18, 4 adults. Change dates on the map below.

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

Follow Crystal Lake’s readings

Email me when new measurements post for this lake. Updates stay free.

Or email

Fishing Crystal Lake

→ Crystal Lake fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Crystal Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).

Causes of impairment

Mercury

Designated uses not supporting: Fish consumption.

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

Source: EPA ATTAINS assessment unit NHLAK801060104-01 · Official waterbody report

Nearby Lakes in Grafton County

George Pond1.7 miView →Smith Pond2.4 miView →Grafton Pond3 miView →Spectacle Pond-VlapOligotrophic2.9 miView →Canaan Street Lake-Deep SpotOligotrophic5.2 miView →Goose Pond-Deep SpotMesotrophic—View →

Frequently asked questions about Crystal Lake

Where is Crystal Lake?: Crystal Lake 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 Crystal Lake?: Crystal Lake in Grafton County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Maximum depth: 50 ft. Surface area: 401 acres.
Is Crystal Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Crystal Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
How deep is Crystal Lake?: Crystal Lake has a maximum depth of 50 feet and an average depth of 21.3 feet. The lake covers 401 acres.
Are there boat ramps on Crystal Lake?: Crystal Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Crystal Lake. Public access is listed as yes.
Can I fish at Crystal Lake?: Crystal Lake 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.