Arlington Reservoir MA72-28_2006, Beaver Brook Charles Basin Cause Unknown Nutrients Siltation Organic enrichment/Low DO Flow alteration Other habitat alterations Pathogens Taste, odor and color Turbidity Arlington / Lexington Hatches Pond Lincoln MA72-28_2006, Beaver Brook Charles Basin Cause Unknown Nutrients Siltation Organic enrichment/Low DO Flow alteration Other habitat alterations Pathogens Taste, odor and color Turbidity MA72045_2006, Hardys Pond Charles Basin Nutrients Noxious aquatic plants Turbidity Hardy Pondt Belmont MA72-28_2006, Beaver Brook Charles Basin Cause Unknown Nutrients Siltation Organic enrichment/Low DO Flow alteration Other habitat alterations Pathogens Taste, odor and color Turbidity lill Pond )uck Pond Chester Brook Pond Hobbs Brook Pond Waltham Wate town Lyman Pond MA72-07_2006, Charles River Charles Basin Priority organics Nutrients Organic enrichment/Low DO Pathogens Noxious aquatic plants Turbidity Exotic species ^Hobbs Pond MA72-07_2006, Charles River Charles Basin Priority organics Nutrients Organic enrichment/Low DO Pathogens Noxious aquatic plants Turbidity Exotic species Weston MA72-29_2006, Cheese Cake Brookl Charles Basin ^ Nutrients Siltation .. Organic enrichment/Low DO Other habitat alterations Pathogens Oil and grease Taste, odor and color Noxious aquatic plants Charbs River* Stony Bt iservoir Newton Impaired Waters and TMDL Status Waltham, MA Map produced by EPA Region IGIS Center Map Tracker ID 3244, May 30, 2008 Data Sources: TeleAtlas, Census Bureau, USGS, MADEP N A SEPA 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 EZ2 Category 2 Category 4a Category 3 ^ Category 4c Waterbodies ZZ Ca^ 5 I I MS4 Urbanized Areas (2000 Census) r_-j Municipal Boundaries ------- |