Where is Hopkinton Lake?

Hopkinton Lake is a lake in Merrimack County, New Hampshire. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.

Are there boat ramps on Hopkinton Lake?

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

Hopkinton Lake

Not yet rated

466 acres

Hopkinton Lake in Merrimack County, New Hampshire is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 466 acres.

Area: 466 acres
Public access: Yes

Where to stay →Safe to swim?

Next lake in Merrimack County

CTom Pond-Deep SpotMerrimack CountyView →

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Why Hopkinton Lake has no grade

We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Hopkinton Lake, no water-quality sampling on record for this lake.

Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.

Sampling is run by your state environmental agency and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.

Hopkinton Lake is a 466-acre lake in Merrimack County, New Hampshire. 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, last sampled recent years. Grade methodology: LakeQuality methodology.

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Swimming Safety

Not rated

Elevated nutrients

Not rated for swimming — there is not enough monitoring data to judge this lake

Compare the safest swimming lakes near Albany →

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Water quality measurements for Hopkinton Lake

These readings exist but are not enough for an A–F grade — see why.

No clarity data. Trophic State Index: undefined.

Metric	Value	Grade
Water Clarity (Secchi Depth)	No recent samples
Phosphorus	No recent samples
Chlorophyll-a (Algae)	No recent samples
Trophic State Index (TSI)

Where to stay near Hopkinton Lake

Compare lakeside cabins, hotels, and vacation rentals near Hopkinton Lake in Merrimack 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 Hopkinton Lake

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Lake Details

Characteristic	Value
Surface Area	466 acres
Public Access	Yes

No bathymetric survey has been published for Hopkinton Lake, so its depth is not documented here.

Recreation & Access

Boat Landings

Yes

Public Access

StumpfieldPublic

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

Fishing Hopkinton Lake

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

Nearby Lakes in Merrimack County

NRDrew LakeView →NRRolf Pond-Deep SpotView →NRFrench PondView →CClement Pond-Deep SpotMesotrophicView →NRGrassy PondView →CTom Pond-Deep SpotEutrophicView →

Frequently asked questions about Hopkinton Lake

Where is Hopkinton Lake?: Hopkinton Lake is a lake in Merrimack County, New Hampshire. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Hopkinton Lake?: Hopkinton Lake in Merrimack County, New Hampshire is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 466 acres.
Is Hopkinton Lake safe to swim in?: Not rated for swimming — there is not enough monitoring data to judge this lake. Hopkinton Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Are there boat ramps on Hopkinton Lake?: Hopkinton Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Stumpfield. Public access is listed as yes.