Where is Long Pond-Richardson Beach?

Long Pond-Richardson Beach is a lake in Middlesex County, Massachusetts. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).

Long Pond-Richardson Beach

Middlesex County, MassachusettsView map Directions

Not rated

Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.

Water temp

No gauge

Clarity

No sample

Level

No gauge

Trend

Not enough history

Impaired · Algal growth
Limited data

See the measurements Directions Where to stay

Long Pond-Richardson Beach in Middlesex County, Massachusetts is not rated for water quality — its monitoring record does not meet the evidence bar.

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Stays via Stay22

Stays near Long Pond-Richardson Beach

Compare lakeside cabins, hotels, and vacation rentals near Long Pond-Richardson Beach in Middlesex County, Massachusetts — 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.

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Watch Long Pond-Richardson Beach’s letter

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Why Long Pond-Richardson Beach 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 Long Pond-Richardson Beach, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).

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 MassDEP and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.

Long Pond-Richardson Beach is a lake in Middlesex County, Massachusetts.

Source: EPA Water Quality Portal sampling records, MassDEP, last sampled recent years. Grade methodology: LakeQuality methodology.

Swimming Safety

Not rated

Limited data

The letter is not a swimming clearance. Long Pond-Richardson Beach is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury. Check local advisories before you swim.

Get alerts for Long Pond-Richardson Beach →

Water quality measurements for Long Pond-Richardson Beach

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

No clarity data.

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

Fishing Long Pond-Richardson Beach

→ Long Pond-Richardson Beach fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Long Pond-Richardson Beach is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).

Causes of impairment

Algal growthMercury

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

Source: EPA ATTAINS assessment unit MA84032 · Official waterbody report · Matched by proximity (0.78 km)

Graded lakes near Long Pond-Richardson Beach

Long Pond-Richardson Beach has no grade, but these lakes within a short drive do.

Nearby Lakes in Middlesex County

NRAlthea Lake—View →NRNewfield Pond—View →NRFlint Pond—View →NRFletchers Pond—View →CNabnasset PondMesotrophic6.4 miView →NRPeters Pond—View →

Frequently asked questions about Long Pond-Richardson Beach

Where is Long Pond-Richardson Beach?: Long Pond-Richardson Beach is a lake in Middlesex County, Massachusetts. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Long Pond-Richardson Beach?: Long Pond-Richardson Beach in Middlesex County, Massachusetts is not rated for water quality — its monitoring record does not meet the evidence bar.
Is Long Pond-Richardson Beach safe to swim in?: The letter is not a swimming clearance. Long Pond-Richardson Beach is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury. Check local advisories before you swim.