Lower Massapoag Pond
MA84A-21_2006, Deep Brook
Merrimack Basin
Unknown toxicity
Siltation
Organic enrichment/Low DO
Pathogens
Dunstable
ietrimackRiver
Tyngsborough
Massapoag,P6hi
MA84087_2006, Massapoag Pond
Merrimack Basin
Metals
Organic enrichment/Low DO
Noxious aquatic plants
Swains Pom
MA84046_2006, Newfield Pond
Merrimack Basin
Metals
Organic enrichment/Low DO
Noxious aquatic plants
Cow Pond Brook
MA84B-04_2006, Stony Brook
Merrimack Basin
Cause Unknown
Nutrients
Organic enrichment/Low DO
Pathogens
MA84 044_2006, Nabnasset Pond
Merrimack Basin
Metals
Long Sought for Pond
\Crooked Springs Pond
NabnassetLake
Baddacbok Brook
Chelmsford
Burgess Pond
MA84B-04_2006, Stony Brook
Merrimack Basin
Cause Unknown
Nutrients
Organic enrichment/Low DO
Pathogens
Duck Pond
MA84B-03_2006, Stony Brook
Merrimack Basin
Cause Unknown
Westford
Knops Pond
Organic enrichment/Low DO
Pathogens
| Turbidity
MA84Q15_2006, Forge Pond
Merrimack Basin
Metals
MA84B-02_2006, Beaver Brook
Merrimack Basin
Nutrients
Organic enrichment/Low DO
Pathogens
(Suspended solids
MA82059_2006, Heart Pond
Concord Basin
Pathogens
Spectacle Pond
Black Pond
MA82072_2006, Long Pond
Concord Basin
Nutrients
Organic enrichment/Low DO
Noxious aquatic plants
MA84B-02_2006, Beaver Brook
Merrimack Basin
Nutrients
Acton,
Mill Pond
Cobbs Pond
Organic enrichment/Low DO
Pathogens
Suspended solids
>Dracut
Lowell
Groton
[Witney Pond
Car isle
Lift eton
Impaired Waters and TMDL Status
Westford, MA
N
A
Map produced by EPA Region IGIS Center
Map Tracker ID 3244, May 30, 2008
Data Sources: TeleAtlas, Census Bureau,
USGS, MADEP
I Mi les
SERA
United States
Environmental Protection
Agency New England
Impaired. Water body Label
State ID. Waterbody Name
Basin Name
Category 4a POC (Pollutants of Concern)
Category 5 POC (Pollutants of Concern)
Impaired Water Segment
cza Category Z	Category 4a
?77A Category 3	£23 Category 4c
Waterbodies S ****** 5
I I MS4 Urbanized Areas (2000 Census)
Municipal Boundaries

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