Roaring Brook Lake
Putnam County, WisconsinLimited DataMesotrophic
Roaring Brook Lake is a 112-acre mesotrophic lake in Putnam County, NY. Water quality is graded C based on 1 sampling years through 2020. Compared to the 12 other monitored lakes in Putnam County, Roaring Brook Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2020-09-26. Grade methodology: LakeGrade methodology.
Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Moderate clarity, visible to about 8.3 ft. Trophic State Index: 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8.3 ft | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 112 acres |
Location
County Ranking
Ranked #4 of 13 lakes in Putnam County
Nearby Lakes in Putnam County
More Wisconsin Lake Rankings
Other Grade C Lakes in Wisconsin
Mesotrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Roaring Brook Lake is a man-made reservoir impounded by the Roaring Brook Dam (completed 1959), built primarily for recreation on the ROARING BROOK; earth-type dam, 25 ft tall and 480 ft long.
- Surface area
- 112 ac
- Normal storage
- 616 ac-ft
- Max storage
- 895 ac-ft
- Drainage area
- 1.62 sq mi
- Hazard class
- High
- Owner
- Town of Putnam Valley
Source: USACE National Inventory of Dams, NID ID NY00239 · Operator website
EPA Impairment Status
Roaring Brook Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit NY1301-0153 · Official waterbody report · Matched by proximity (2.08 km)
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Grading methodology based on Metropolitan Council standards
Most recent sample: 2020-09-26
Monitoring stations: 1