Where is Zephyr Lake?

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

How deep is Zephyr Lake?

Zephyr Lake has a maximum depth of 15 feet and an average depth of 8.9 feet. The lake covers 35 acres.

Are there boat ramps on Zephyr Lake?

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

Can I fish at Zephyr Lake?

Zephyr 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.

Zephyr Lake

Hillsborough County, New Hampshire35 acresView map Directions

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

Max depth

15 ft

Bathymetric survey

Area

35 acres

Surface area

Shoreline

1.1 mi

Measured length

Impaired · Algal growth
15 ft max depth
Public access

See the measurements Directions Where to stay

Zephyr Lake in Hillsborough County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Maximum depth: 15 ft. Surface area: 35 acres.

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Zephyr Lake is a 35-acre lake in Hillsborough County, New Hampshire with a maximum depth of 15 feet (9-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 Zephyr Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp

Swimming conditions

No reading

Not rated

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

Whether Zephyr 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.

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Water quality measurements for Zephyr Lake

These are the measurements NHDES publishes for Zephyr 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 Zephyr Lake

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

Lake Details

Max depth

15 ft

Average depth

8.9 ft

Surface area

35 acres

Shoreline

1.1 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

Zephyr LakePublic

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 Zephyr Lake

Compare lakeside cabins, hotels, and vacation rentals near Zephyr Lake in Hillsborough 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 Zephyr Lake

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Fishing Zephyr Lake

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

EPA Impairment Status

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

Causes of impairment

Algal growthMercuryNutrients (phosphorus, nitrogen)pH / acidity

Designated uses not supporting: Aquatic life, Fish consumption.

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

Source: EPA ATTAINS assessment unit NHLAK700030105-01-01 · Official waterbody report

Nearby Lakes in Hillsborough County

Sunset Lake2.4 miView →Otter Lake2.9 miView →Whittemore Lake4.4 miView →Burton Pond4.8 miView →Powder Mill Pond4.8 miView →Cranberry Meadow Pond5.7 miView →

Frequently asked questions about Zephyr Lake

Where is Zephyr Lake?: Zephyr Lake is a lake in Hillsborough County, New Hampshire. Its water-quality measurements are published by NHDES and shown on this page as reported.
What is the water quality of Zephyr Lake?: Zephyr Lake in Hillsborough County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Maximum depth: 15 ft. Surface area: 35 acres.
Is Zephyr Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Zephyr Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury, nutrients (phosphorus, nitrogen), pH / acidity. Check local advisories before you swim.
How deep is Zephyr Lake?: Zephyr Lake has a maximum depth of 15 feet and an average depth of 8.9 feet. The lake covers 35 acres.
Are there boat ramps on Zephyr Lake?: Zephyr Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Zephyr Lake. Public access is listed as yes.
Can I fish at Zephyr Lake?: Zephyr 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.