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Total Maximum Daily Loads by Watershed

Draft and final TMDL reports for Massachusetts and the New England region.
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Statewide Pathogen TMDL

Final Massachusetts Statewide TMDL for Pathogen-Impaired Waterbodies, Open PDF file, 2.15 MB (English, PDF 2.15 MB)
Statewide Pathogen TMDL - Fact Sheet, Open PDF file, 217.4 KB (English, PDF 217.4 KB)
Statewide Pathogen Information Session Presentation, Open PDF file, 2.63 MB (English, PDF 2.63 MB)
Appendix A: Hoosic River Basin, Open PDF file, 2.73 MB (English, PDF 2.73 MB)
Appendix B: Housatonic River Basin , Open PDF file, 3.89 MB (English, PDF 3.89 MB)
Appendix C: Westfield River Basin, Open PDF file, 7.07 MB (English, PDF 7.07 MB)
Appendix D: Deerfield River Basin, Open PDF file, 5.68 MB (English, PDF 5.68 MB)
Appendix E: Connecticut River Basin, Open PDF file, 13.92 MB (English, PDF 13.92 MB)
Appendix F: Millers River Basin, Open PDF file, 992.48 KB (English, PDF 992.48 KB)
Appendix G: Chicopee River Basin, Open PDF file, 14 MB (English, PDF 14 MB)
Appendix H: Quinebaug River Basin, Open PDF file, 5.53 MB (English, PDF 5.53 MB)
Appendix I: French River Basin , Open PDF file, 2.78 MB (English, PDF 2.78 MB)
Appendix J: Blackstone River Basin, Open PDF file, 17.12 MB (English, PDF 17.12 MB)
Appendix K: Ten Mile River Basin, Open PDF file, 5.84 MB (English, PDF 5.84 MB)
Appendix L: Narragansett Bay (Shore) Coastal Drainage Area, Open PDF file, 2.43 MB (English, PDF 2.43 MB)
Appendix M: Mount Hope Bay (Shore) Coastal Drainage Area, Open PDF file, 1.98 MB (English, PDF 1.98 MB)
Appendix N: Taunton River Basin, Open PDF file, 1.79 MB (English, PDF 1.79 MB)
Appendix O: Mystic River Basin and Coastal Drainage Area, Open PDF file, 3.19 MB (English, PDF 3.19 MB)
Appendix P: Charles River Basin and Coastal Drainage Area, Open PDF file, 5.84 MB (English, PDF 5.84 MB)
Appendix Q: Neponset River Basin and Coastal Drainage Area, Open PDF file, 2.11 MB (English, PDF 2.11 MB)
Appendix R: Weymouth & Weir River Basin and Coastal Drainage Area, Open PDF file, 5.59 MB (English, PDF 5.59 MB)
Appendix S: Nashua River Basin, Open PDF file, 18.37 MB (English, PDF 18.37 MB)
Appendix T: Concord (SuAsCo) River Basin, Open PDF file, 18.31 MB (English, PDF 18.31 MB)
Appendix U: Shawsheen River Basin, Open PDF file, 1.27 MB (English, PDF 1.27 MB)
Appendix V: Merrimack River Basin and Coastal Drainage Area, Open PDF file, 27.37 MB (English, PDF 27.37 MB)
Appendix W: Ipswich River Basin and Coastal Drainage Area, Open PDF file, 6.96 MB (English, PDF 6.96 MB)
Appendix X: North Shore Coastal Drainage Area, Open PDF file, 3.4 MB (English, PDF 3.4 MB)
Appendix Y: South Shore Coastal Drainage Area, Open PDF file, 3.43 MB (English, PDF 3.43 MB)
Appendix Z: Buzzards Bay Coastal Drainage Area, Open PDF file, 8.49 MB (English, PDF 8.49 MB)
Appendix AA: Cape Cod Coastal Drainage Area, Open PDF file, 6.89 MB (English, PDF 6.89 MB)
Appendix AB: Islands Coastal Drainage Area, Open PDF file, 1.48 MB (English, PDF 1.48 MB)
Appendix AC: Response to Comments, Open PDF file, 3.69 MB (English, PDF 3.69 MB)

Northeast Regional Mercury TMDL

Final Northeast Regional Mercury TMDL, Open PDF file, 499.07 KB (English, PDF 499.07 KB)
Northeast Regional Mercury Total Maximum Daily Load: Final Addendum for Massachusetts, Open PDF file, 183.96 KB (English, PDF 183.96 KB)
New England Interstate Water Pollution Control Commission: Mercury TMDL

Blackstone River Watershed

Final TMDLs of Phosphorus for Indian Lake, Open PDF file, 677.92 KB (English, PDF 677.92 KB)
Final TMDLs of Phosphorus for Lake Quinsigamond and Flint Pond, Open PDF file, 666.75 KB (English, PDF 666.75 KB)
Final TMDLs of Phosphorus for Leesville Pond, Open PDF file, 691.51 KB (English, PDF 691.51 KB)
Final TMDL for Northern Blackstone Lakes, Open PDF file, 2.12 MB (English, PDF 2.12 MB)
Final TMDLs of Phosphorus for Salisbury Pond, Open PDF file, 853.16 KB (English, PDF 853.16 KB)

Boston Harbor Watershed

Final Pathogen TMDL Report for the Boston Harbor, Weymouth-Weir, and Mystic Watersheds, Open PDF file, 4.78 MB (English, PDF 4.78 MB)
Mystic River Watershed Alternative TMDL Development for Phosphorus Management - Final Report, Open PDF file, 6.02 MB (English, PDF 6.02 MB)
Final TMDLs of Bacteria for Neponset River Basin, Open PDF file, 1.69 MB (English, PDF 1.69 MB)
Final Neponset Bacteria TMDL Addendum, Open PDF file, 824.12 KB (English, PDF 824.12 KB)

Buzzards Bay Watershed

Final Nitrogen TMDL Report for Megansett-Squeteague Harbor Estuarine System, June 2020, Open PDF file, 5.52 MB (English, PDF 5.52 MB)
Final Fiddlers Cove and Rands Harbor Embayment Systems Total Maximum Daily Loads for Total Nitrogen, Open PDF file, 1.63 MB (English, PDF 1.63 MB)
Final Quissett Harbor Embayment System Total Maximum Daily Loads for Total Nitrogen, Open PDF file, 1.11 MB (English, PDF 1.11 MB)
Final Wild Harbor Embayment System Total Maximum Daily Loads for Total Nitrogen, Open PDF file, 1.28 MB (English, PDF 1.28 MB)
Final TMDL of Total Phosphorus for White Island Pond, Open PDF file, 2.44 MB (English, PDF 2.44 MB)
White Island Pond Memorandum of Agreement, Open PDF file, 35.47 KB (English, PDF 35.47 KB)
Final Pathogen TMDL for the Buzzards Bay Watershed, Open PDF file, 2.85 MB (English, PDF 2.85 MB)
Final Pathogen TMDL for the Buzzards Bay Watershed - Appendices, Open PDF file, 3.47 MB (English, PDF 3.47 MB)
Final Nitrogen TMDL for Westport River, Open PDF file, 1.81 MB (English, PDF 1.81 MB)
Final Nitrogen TMDL for Slocums & Little Rivers Embayment System, Open PDF file, 10.19 MB (English, PDF 10.19 MB)
Final Total Nitrogen TMDL for New Bedford Inner Harbor, Open PDF file, 3.26 MB (English, PDF 3.26 MB)
New Bedford Inner Harbor TMDL for Total Nitrogen - Fact Sheet, Open PDF file, 307.51 KB (English, PDF 307.51 KB)
New Bedford Inner Harbor TMDL for Total Nitrogen - Information Session Presentation, Open PDF file, 3.1 MB (English, PDF 3.1 MB)
Final Total Nitrogen TMDL for Wareham River Estuary System, Open PDF file, 2.75 MB (English, PDF 2.75 MB)
Wareham River TMDL for Total Nitrogen - Fact Sheet, Open PDF file, 725.92 KB (English, PDF 725.92 KB)
Wareham River TMDL for Total Nitrogen - Information Session Presentation, Open PDF file, 6.05 MB (English, PDF 6.05 MB)

Cape Cod Watershed

Final Total Nitrogen TMDL for Wellfleet Harbor , Open PDF file, 3.06 MB (English, PDF 3.06 MB)
Final Total-Nitrogen TMDL for the Bass River Estuarine System, Open PDF file, 1.77 MB (English, PDF 1.77 MB)
Final Total-Nitrogen TMDL for the Parkers River Embayment System, Open PDF file, 2.02 MB (English, PDF 2.02 MB)
Final Total-Nitrogen TMDL for the Swan Pond River Estuarine System, Open PDF file, 1.74 MB (English, PDF 1.74 MB)
Final Pathogen TMDL Report for the Cape Cod Watershed, Open PDF file, 2.01 MB (English, PDF 2.01 MB)
Addendum to Final Cape Cod Pathogen TMDL Report, March 2012, Open PDF file, 669.9 KB (English, PDF 669.9 KB)
Final Nutrient TMDL for Centerville River/East Bay, Open PDF file, 540.29 KB (English, PDF 540.29 KB)
Final TMDL for Lewis Bay for Total Nitrogen, Open PDF file, 2.8 MB (English, PDF 2.8 MB)
Final Nitrogen TMDL for Little Pond, Open PDF file, 729.48 KB (English, PDF 729.48 KB)
Final Nitrogen TMDL for Oyster Pond, Open PDF file, 500.21 KB (English, PDF 500.21 KB)
Final Nitrogen TMDL for Phinneys Harbor, Open PDF file, 629.27 KB (English, PDF 629.27 KB)
Final Nitrogen TMDL for Pleasant Bay System, Open PDF file, 1.66 MB (English, PDF 1.66 MB)
Final Nitrogen TMDL for West Falmouth Harbor, Open PDF file, 496.09 KB (English, PDF 496.09 KB)
Final Nitrogen TMDL Report for Five Sub-Embayments of Popponesset Bay, Open PDF file, 357.89 KB (English, PDF 357.89 KB)
Final Nitrogen TMDL Report for Falmouth Inner Harbor, June 2020, Open PDF file, 3.19 MB (English, PDF 3.19 MB)
Final Nitrogen TMDL Report for Waquoit Bay System; including Eel Pond, Quashnet River, Hamblin Pond, and Jehu River, Open PDF file, 6.8 MB (English, PDF 6.8 MB)
Final Bacteria TMDL Report for the Three Bays System, Open PDF file, 1.11 MB (English, PDF 1.11 MB)
Final Nitrogen TMDL Report for the Three Bays System, Open PDF file, 628.89 KB (English, PDF 628.89 KB)
Final Nitrogen TMDL Report for Five Chatham Embayments (Stage Harbor, Sulphur Springs, Taylors Pond, Bassing Harbor and Muddy Creek), Open PDF file, 398.14 KB (English, PDF 398.14 KB)
Final TMDL Report of Bacteria for Frost Fish Creek, Chatham, Open PDF file, 826.1 KB (English, PDF 826.1 KB)
Final TMDLs of Nitrogen for Great, Green, and Bournes Pond Embayment Systems, Open PDF file, 2.56 MB (English, PDF 2.56 MB)
Final TMDL Report of Bacteria for Muddy Creek, Chatham, Open PDF file, 603.84 KB (English, PDF 603.84 KB)
Final TMDL for Total Nitrogen for Allen, Wychmere & Saquatucket Harbors, Open PDF file, 1.02 MB (English, PDF 1.02 MB)
Final TMDL for Total Nitrogen for the Herring River, Open PDF file, 1.33 MB (English, PDF 1.33 MB)

Charles River Watershed

Optimal Stormwater Management Plan Alternatives: A Demonstration Project in Three Upper Charles River Communities, Open PDF file, 3.59 MB (English, PDF 3.59 MB)
Final TMDL for Nutrients in the Upper/Middle Charles River, Open PDF file, 2.2 MB (English, PDF 2.2 MB)
Final TMDL for Nutrients in the Upper/Middle Charles River:Appendix, Open PDF file, 111.41 KB (English, PDF 111.41 KB)
Final Phosphorus TMDL Report for the Lower Charles River Basin, Open PDF file, 1.77 MB (English, PDF 1.77 MB)
Final Pathogen TMDL Reports for the Charles River Watershed, Open PDF file, 3.73 MB (English, PDF 3.73 MB)
Final Pathogen TMDL Reports for the Charles River Watershed, Appendix A, Open PDF file, 1.12 MB (English, PDF 1.12 MB)
Final Pathogen TMDL Reports for the Charles River Watershed, Appendix B, Open PDF file, 2.26 MB (English, PDF 2.26 MB)
Pathogen Hotspots in the Charles River Watershed, Open PDF file, 547.3 KB (English, PDF 547.3 KB)

Chicopee River Watershed

Final TMDLs of Phosphorus for Quaboag and Quacumquasit Ponds, Open PDF file, 2.7 MB (English, PDF 2.7 MB)
Final TMDLs of Phosphorus for Selected Chicopee Basin Lakes, Open PDF file, 2.03 MB (English, PDF 2.03 MB)

Concord River Watershed

Not available

Connecticut River Watershed

Final TMDLs of Phosphorus for Selected Connecticut Basin Lakes, Open PDF file, 2.01 MB (English, PDF 2.01 MB)

French River Watershed

Final TMDLs of Phosphorus for Selected French Basin Lakes, Open PDF file, 5.02 MB (French, PDF 5.02 MB)

Islands Watershed

Final Chilmark Pond Estuarine System Total Maximum Daily Load for Total Nitrogen, Open PDF file, 1.3 MB (English, PDF 1.3 MB)
Final Total-Nitrogen TMDL for Tisbury Great Pond/Black Point Pond Estuarine System, Open PDF file, 2.48 MB (English, PDF 2.48 MB)
Final Edgartown Great Pond System Total Maximum Daily Load for Nitrogen, Open PDF file, 1.29 MB (English, PDF 1.29 MB)
Final Farm Pond Estuarine System Total Maximum Daily Load for Total Nitrogen (Control Number 391.1), Open PDF file, 1.79 MB (English, PDF 1.79 MB)
Final Pathogen TMDL Report for the Islands Watershed, Open PDF file, 2.08 MB (English, PDF 2.08 MB)
Final Lagoon Pond Estuarine System Total Maximum Daily Loads for Total Nitrogen (Control No. 390.1), Open PDF file, 1.79 MB (English, PDF 1.79 MB)
Final Lake Tashmoo Estuarine System Total Maximum Daily Load for Total Nitrogen, Open PDF file, 1.83 MB (English, PDF 1.83 MB)
Final Nitrogen TMDL for Madaket Harbor/Long Pond, Open PDF file, 1.31 MB (English, PDF 1.31 MB)
Final TMDLs of Total Nitrogen for Nantucket Harbor, Open PDF file, 398.82 KB (English, PDF 398.82 KB)
Final Sengekontacket Pond Estuarine System Total Maximum Daily Loads for Total Nitrogen, Control Number 310.0, Open PDF file, 1.14 MB (English, PDF 1.14 MB)

Merrimack River Watershed

Not available

Millers River Watershed

Final TMDLs of Phosphorus for Selected Millers River Basin Lakes, Open PDF file, 3.28 MB (English, PDF 3.28 MB)

Narragansett Bay Watershed

Final Pathogen TMDL for the Narragansett/Mt. Hope Bay Watershed, Open PDF file, 1.78 MB (English, PDF 1.78 MB)
Final Bacteria TMDL for Palmer River Basin, Open PDF file, 1.76 MB (English, PDF 1.76 MB)
Final Bacteria TMDL for Palmer River Basin Appendix A, Open PDF file, 277.35 KB (English, PDF 277.35 KB)
Final Bacteria TMDL for Palmer River Basin Appendix B, Open PDF file, 1.67 MB (English, PDF 1.67 MB)
Final Bacteria TMDL for Palmer River Basin Appendix C, Open PDF file, 359.62 KB (English, PDF 359.62 KB)

Nashua River Watershed

Final TMDL for Bare Hill Pond, Open PDF file, 723.51 KB (English, PDF 723.51 KB)

North Coastal Watershed

Final Pathogen TMDL for the North Coastal Watershed, Open PDF file, 1.76 MB (English, PDF 1.76 MB)

Parker River Watershed

Final Pathogen TMDL for Parker River Basin, Open PDF file, 3.24 MB (English, PDF 3.24 MB)

Shawsheen River Watershed

Draft Storm Water Pollutant TMDL for Headwaters of the Shawsheen River, Open PDF file, 1020.53 KB (English, PDF 1020.53 KB)
Final TMDLs of Bacteria for Shawsheen River Basin, Open PDF file, 517.7 KB (English, PDF 517.7 KB)

South Coastal Watershed

Final Pathogen TMDL for the South Coastal Watershed, Open PDF file, 3.42 MB (English, PDF 3.42 MB)
Final TMDLs of Bacteria for Little Harbor, Cohasset, Open PDF file, 974.96 KB (English, PDF 974.96 KB)

SuAsCo Watershed

Final TMDLs of Phosphorus for Lake Boon (Boons Pond), Open PDF file, 1.36 MB (English, PDF 1.36 MB)
Final Nutrient TMDL Report for the Assabet River, Open PDF file, 2.18 MB (English, PDF 2.18 MB)
US Army Corps of Engineers: Assabet River Sediment and Dam Removal Study

Taunton Watershed

Final West and East Monponsett Pond System Total Maximum Daily Loads For Total Phosphorus, Open PDF file, 10.11 MB (English, PDF 10.11 MB)
Final Pathogen TMDL Report for the Taunton Watershed, Open PDF file, 1.2 MB (English, PDF 1.2 MB)

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