Mill Pond
Barnstable County, MassachusettsView mapDirections
MassDEP publishes the water-quality measurements for Mill Pond. Here is what has been measured.
- Hypereutrophic
- Public access
- Limited data
Mill Pond in Barnstable County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Chlorophyll-a (algae): 30.5 µg/L.
Mill Pond is a highly nutrient-loaded hypereutrophic lake in Barnstable County, Massachusetts. Limited fish-species data available. Public access is available. Compared to the 7 other monitored lakes in Barnstable County, Mill Pond ranks #8 for water quality.
Source: EPA Water Quality Portal sampling records, MassDEP, last sampled 2018-09-20. Methodology: how these readings are compared.
Swimming conditions
Readings onlyLimited data
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. Check local advisories before you swim.
Whether Mill Pond is safe to swim in today is a call for the Massachusetts Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Mill Pond
These are the measurements MassDEP publishes for Mill Pond, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Chlorophyll-a 30.5 µg/L. TSI 64.
| 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 | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | 30.5µg/L | Poor GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 64 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Mill Pond
Answers come straight from the public measurements and survey records on this page.
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Stays near Mill Pond
Compare lakeside cabins, hotels, and vacation rentals near Mill Pond in Barnstable 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. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Mill Pond are listed below.
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Fishing Mill Pond
Nearby Lakes in Barnstable County
Frequently asked questions about Mill Pond
Where is Mill Pond?
- Mill Pond is a lake in Barnstable County, Massachusetts. Its water-quality measurements are published by MassDEP and shown on this page as reported.
What is the water quality of Mill Pond?
- Mill Pond in Barnstable County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Chlorophyll-a (algae): 30.5 µg/L.
Is Mill Pond safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Can I fish at Mill Pond?
- Public access to Mill Pond is listed as yes on the lake record. Seasons, size and bag limits, and whether you need a license are set by Massachusetts's fish and wildlife agency, so check its current regulations before you go.
Explore Mill Pond across LakeQuality
Planning a trip around Cape Cod?
Mill Pond is about 14 miles from Cape Cod National Seashore. Crowds there swing hard by season, so the month you pick changes both how busy the park is and what lodging costs.
Best time to visit Cape Cod →More lakes in Massachusetts
Other Lakes in Massachusetts
Hypereutrophic Lakes in Massachusetts
Where this data comes from
3 measurements from 1 monitoring station, 2018. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Massachusetts Department of Environmental Protection (MassDEP)
MASSDEP3 samples · 2018
Analytical methods
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.