Roaring Brook Lake
Franklin County, Massachusetts20 acresView mapDirections
MassDEP publishes the water-quality measurements for Roaring Brook Lake. Here is what has been measured.
- Mesotrophic
- Limited data
Roaring Brook Lake in Franklin County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Chlorophyll-a (algae): 3.2 µg/L. Surface area: 20 acres.
Roaring Brook Lake is a 20-acre mesotrophic lake in Franklin County, Massachusetts. Compared to the 3 other monitored lakes in Franklin County, Roaring Brook Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, MassDEP, last sampled 2016-08-31. 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 Roaring Brook Lake 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 Roaring Brook Lake
These are the measurements MassDEP publishes for Roaring Brook 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. Chlorophyll-a 3.2 µg/L. TSI 42.
| 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) | 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. | 42 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Roaring Brook Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
20 acres
No bathymetric survey has been published for Roaring Brook Lake, so its depth is not documented here.
Stays via Stay22
Stays near Roaring Brook Lake
Compare lakeside cabins, hotels, and vacation rentals near Roaring Brook Lake in Franklin 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.
Top-rated places to stay near Roaring Brook Lake
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Massachusetts’s top lakes →
Follow Roaring Brook Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Roaring Brook Lake
Reservoir Info (USACE NID)
Roaring Brook Lake is a man-made reservoir impounded by the Conway Reservoir Dam (completed 1975), built primarily for water supply on the Roaring Brook; earth-type dam, 65 ft tall and 435 ft long.
- Surface area
- 20 ac
- Normal storage
- 450 ac-ft
- Max storage
- 553 ac-ft
- Drainage area
- 4 sq mi
- Hazard class
- High
- Owner
- South Deerfield Water Supply District
Source: USACE National Inventory of Dams, NID ID MA01056 · Operator website
Nearby Lakes in Franklin County
Frequently asked questions about Roaring Brook Lake
Where is Roaring Brook Lake?
- Roaring Brook Lake is a lake in Franklin County, Massachusetts. Its water-quality measurements are published by MassDEP and shown on this page as reported.
What is the water quality of Roaring Brook Lake?
- Roaring Brook Lake in Franklin County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Chlorophyll-a (algae): 3.2 µg/L. Surface area: 20 acres.
Is Roaring Brook Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Roaring Brook Lake across LakeQuality
More lakes in Massachusetts
Other Lakes in Massachusetts
Mesotrophic Lakes in Massachusetts
Where this data comes from
3 measurements from 1 monitoring station, 2016. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Massachusetts Department of Environmental Protection (MassDEP)
MASSDEP3 samples · 2016
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.