Upper Cady Pond Whitney Pond MA84A-19_2006, Martins Pond Brook' Merrimack Basin Si Itation Organic enrichment/Low DO Turbidity Lower Cady Pond MA81-06_2Q06, Nashua River Nashua Basin Cause Unknown Metals Nutrients Organic enrichment/Low DO Noxious aquatic plants I Turbidity MA84084_20G6, Knops Pond/Lost Lake Merrimack Basin Metals Groton Duck Pond Groton School Pond MA81 -05_2006, Nashua River Nashua Basin Cause Unknown Unknown toxicity Metals Nutrients Pathogens Taste, odor and color I Turbidity MA84 089_2006, Spectacle Pond Merrimack Basin Organic enrichment/Low DO Noxious aquatic plants Shirley Spectacle Pond MA81103_2006, Plow Shop Pond Nashua Basin Metals Noxious aquatic plants ihool House Pond Plow Shop Pont. MA84B-01_2006, Unnamed Tributary Menimack Basin Nutrients Grove Organic enrichment/Low DO Pathogens Suspended solids MA81053_2006, Grove Pond I Nashua Basin Metals Noxious aquatic plants Shaker Mill Pond Littleton MA84081_2006, Mill Pond Mem mack Basin Noxious aquatic plants tr Brook Harvard Mill Pond Little Mirror Lake 'Mirror Lake MA81085_2006, Mirror Lake Nashua Basin Metals Boxborough Impaired Waters and TMDL Status Ayer, 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 Miles 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 ZZ Category 5 Waterbodies I I MS4 Urbanized Areas (2000 Census) ca Municipal Boundaries ------- |