BOSTON

QUINCY



MILTON

DOVER

WESTWOOD

wmBP

Brook &

-&rook

MEDFIELD

NORWOOD

RANDOLPH

CANTON^

Willet Pond

r^f.gphoK

NevoM* <*,

Turner Pond

WADPOLEl

>STOUGHTON

Ganawatte

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Farm Pond.

SHARON)

FOXBOROUGH

Crack Rock Pond

Grade Water Segment	„ Average

Compliance Kate

Neponset River Watershed Water Quality
Grades and Compliance Rates - Calendar Year 2020

Turner Pond (Walpole)

98.6%

Crack Rock Pond

97.3%

Ganawatte Farm Pond

96.8%

Willet Pond

96.1%

Massapoag Brook

89.7%

Mill Brook

89.5%

East Branch

86.7%

Beaver Brook

86.3%

Steep Hill Brook

86.2%

Spring Brook

81.8%

Mother Brook

79.8%

Upper Neponset River

76.8%

Mine Brook

76.0%

Ponkapoag Brook

75.7%

Lower Neponset River

74.4%

Beaver Meadow Brook

71.8%

Pecunit Brook

70.6%

Hawes Brook
Traphole Brook
Pine Tree Brook
Pequit Brook

Germany Brook
Purgatory Brook
Unquity Brook
Meadow Brook

69.3%
63.0%
62.1%
58.4%

50.1%
45.0%
31.4%
24.1%

B

Monitoring Points

Average Compliance Rates for Swimming and Boating Standards

c

100-86 85-71	70-56	55-40	39-0

D

2020 Neponset River
Watershed Report Card

(based on 2018-2020 bacterial data)

Data Sources: Mystic River Watershed Association, U.S. EPA, Massachusetts Water Resources Authority, MassGIS.
Basemap: Canvas/World Light Gray Base © ESRI and its data suppliers. EPA Region 1 GIS Center map #13390, 7/14/2021

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