Salem
Hudson!
Harris Pond
'•orest Lake
Gumpas Pond
Pelham
Littfe Island Pond
iriffin Brook Pond
JLong Pond
Loweli-Dracut St for Ponds
Nutrients
Pathogens
Andover
Lake
Merrimack River
Chelmsford \
I I MS4 Urbanized Areas (2000 Census)
a Municipal Boundaries
Miles
Agency New England

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