Where is Wilson Pond-Deep Spot?

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

Are there boat ramps on Wilson Pond-Deep Spot?

Wilson Pond-Deep Spot has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lower Wilson Pond Dam. Public access is listed as yes.

Can I fish at Wilson Pond-Deep Spot?

Wilson Pond-Deep Spot 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.

Wilson Pond-Deep Spot

Cheshire County, New Hampshire80 acresView map Directions

NHDES publishes the water-quality measurements for Wilson Pond-Deep Spot. Here is what has been measured.

Phosphorus

16.8 µg/L

Typical for New Hampshire

Measured by NHDES

Chlorophyll-a

3.2 µg/L

Typical for New Hampshire

Measured by NHDES

Area

80 acres

Surface area

Type

Mesotrophic

Trophic class

Mesotrophic
Impaired · Mercury
Public access

See the measurements Directions Where to stay

Wilson Pond-Deep Spot in Cheshire County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Phosphorus: 16.8 µg/L. Chlorophyll-a (algae): 3.2 µg/L. Surface area: 80.4 acres.

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Wilson Pond-Deep Spot is a 80-acre mesotrophic lake in Cheshire County, New Hampshire. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 37 other monitored lakes in Cheshire County, Wilson Pond-Deep Spot ranks #31 for water quality.

Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-09-16. Methodology: how these readings are compared.

What Wilson Pond-Deep Spot is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp

Swimming conditions

Readings only

Moderate algae

Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.

Nutrient and algae readings are not a swimming clearance. Wilson Pond-Deep Spot is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, oxygen depletion (low DO). Check local advisories before you swim.

Whether Wilson Pond-Deep Spot 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 Wilson Pond-Deep Spot

These are the measurements NHDES publishes for Wilson Pond-Deep Spot, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

No clarity data. Phosphorus 16.8 µg/L. Chlorophyll-a 3.2 µg/L. TSI 43.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)		No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	16.8µg/L	Fair GoodFairPoor
Chlorophyll-a (algae)	3.2µg/L	Good GoodFairPoor
Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a.	43	Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Moderate nutrients, good water quality

Ask about Wilson Pond-Deep Spot

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

Lake Details

Surface area

80 acres

Public access

Yes

Listed by NHDES

No bathymetric survey has been published for Wilson Pond-Deep Spot, so its depth is not documented here.

Recreation & Access

Boat Landings

Yes

Public Access

Lower Wilson Pond DamPublic

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

Stays via Stay22

Stays near Wilson Pond-Deep Spot

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Fishing Wilson Pond-Deep Spot

→ Wilson Pond-Deep Spot fishing regulations (limits, seasons, special rules)

Reservoir Info (USACE NID)

Wilson Pond-Deep Spot is a man-made reservoir impounded by the Lower Wilson Pond Dam (completed 1925), built primarily for recreation on the Minnewawa Brook; earth-type dam, 18 ft tall and 120 ft long.

Surface area: 80.4 ac
Normal storage: 250 ac-ft
Max storage: 560 ac-ft
Drainage area: 1.51 sq mi
Hazard class: Significant
Owner: TOWN OF SWANZEY

Source: USACE National Inventory of Dams, NID ID NH00206 · Operator website · Matched by proximity (0.32 km)

EPA Impairment Status

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

Causes of impairment

MercuryOxygen depletion (low DO)

Designated uses not supporting: Aquatic life, Fish consumption.

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

Source: EPA ATTAINS assessment unit NHLAK802010303-10 · Official waterbody report

Nearby Lakes in Cheshire County

Babbidge Reservoir—View →Otter Brook Lake—View →Swanzey Lake-Pilgrim Pines Beach3.9 miView →Swanzey Lake-Deep SpotMesotrophic4.3 miView →Swanzey Lake-Public Beach4.5 miView →Spectacle Pond—View →

Frequently asked questions about Wilson Pond-Deep Spot

Where is Wilson Pond-Deep Spot?: Wilson Pond-Deep Spot is a lake in Cheshire County, New Hampshire. Its water-quality measurements are published by NHDES and shown on this page as reported.
What is the water quality of Wilson Pond-Deep Spot?: Wilson Pond-Deep Spot in Cheshire County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Phosphorus: 16.8 µg/L. Chlorophyll-a (algae): 3.2 µg/L. Surface area: 80.4 acres.
Is Wilson Pond-Deep Spot safe to swim in?: Nutrient and algae readings are not a swimming clearance. Wilson Pond-Deep Spot is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, oxygen depletion (low DO). Check local advisories before you swim.
Are there boat ramps on Wilson Pond-Deep Spot?: Wilson Pond-Deep Spot has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lower Wilson Pond Dam. Public access is listed as yes.
Can I fish at Wilson Pond-Deep Spot?: Wilson Pond-Deep Spot 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.

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