MA84B-03_2006, Stony Brook Merrimack Basin Cause Unknown pH Organic enrichment/Low DO Pathogens Turbidity Knops Pond MA84015_2006, Forge Pond Merrimack Basin Metals Groton MA84B-02_2006, Beaver Brook Merrimack Basin Nutrients pl-l Organic enrichment/Low DO Pathogens Suspended solids MA84089_2006, Spectacle Pond Merrimack Basin Organic enrichment/Low DO Noxious aquatic plants Westford Spectacle Pond MA84B-01_2006, Unnamed Tributary Merrimack Basin Nutrients pH Organic enrichment/Low DO Pathogens Suspended solids MA84038_2006, Mill Pond Merrimack Basin Noxious aquatic plants MA82072_2006, Long Pond Concord Basin Nutrients Organic enrichment/Low DO Noxious aquatic plants ! Littleton MA84081_2006, Mill Pond Merrimack Basin Noxious aquatic plants MA84B-02_2006, Beaver Brook Merrimack Basin Nutrients pH Organic enrichment/Low DO Pathogens Suspended solids Mill Pond Cobbs Pond Harvard MuddwPond} Grassy Pond Stream Boxborough Acton Impaired Waters and TMDL Status Littleton, MA Map produced by EPA Region IGIS Center Map Tracker ID 3244, May 30, 2008 Data Sources: TeleAtlas, Census Bureau, USGS, MADEP N A oEPA I Miles 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 ------- |