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Water, Wastewater & Wetlands: Water Quality Assessments
Water Quality Assessment Reports
Water quality assessment reports are produced periodically for each watershed by the MassDEP Division of Watershed Management (DWM), to:
- publish data generated by DWM to the public;
- review available quality-assured data from other sources;
- determine the use support status of surface water bodies;
- determine the causes and sources of any impairments to uses; and
- support reporting to the USEPA on the status of the Commonwealth's surface waters (see the Integrated List of Waters).
Reports are listed alphabetically by watershed name.
NOTE: Very large file sizes may significantly increase download times.
Blackstone River Basin - 1998
Section I: MS Word 564 KB | Section II: MS Word 350 KB
Section III: MS Word 3 MB | Section IV: MS Word 2.8 MB
Boston Harbor - 1999
Section I: PDF 960 KB | Section II: PDF 973 KB
Section IIIa: PDF 490 KB | Section IIIb: PDF 2.42 MB
Section IIIc: PDF 1.01 MB | Section IIId: PDF 915 KB
Section IV: PDF 1.07 MB
Buzzards Bay Watershed - 2000
Section I: PDF 822 KB | Section II: PDF 2.9 MB
Section III: PDF 3.53 MB | Section IV: PDF 1.7 MB
Cape Cod Watershed - 1999
PDF 4 MB
Charles River Basin Watershed - 1997/1998
Section I: MS Word 723 KB | Section II: MS Word 248 KB
Section III: MS Word 2.7 MB | Section IV: MS Word 6.3 MB
Errata sheet: MS Word 24 KB
Charles River Watershed - 2002-2006
Report: MS Word 4.3 MB | PDF 2.3 MB
Appendix A: MS Word 710 KB | PDF 96 KB
Appendix B: MS Word 1.6 MB | PDF 451 KB
Appendix C: MS Word 2.1 MB | PDF 369 KB
Appendix D: MS Word 762 KB | PDF 99 KB
Appendix E: MS Word 353 KB | PDF 38 KB
Appendix F: MS Word 230 KB | PDF 136 KB
Appendix G: MS Word 100 KB | PDF 55 KB
Appendix H: MS Word 1.1 MB | PDF 193 KB
Appendix I: MS Word 206 KB | PDF 95 KB
Chicopee River Basin - 1998
Section I: MS Word 1 MB | Section II: MS Word 319 KB
Section III: MS Word 7.7MB | Section IV: MS Word 2.3 MB
Chicopee River Basin - 2003
Report: MS Word 7.4 MB | PDF 3.7 MB
Appendix A, Assessment Methodology Guidelines: MS Word 121 KB | PDF 81 KB
Appendix B, 2003 Water Quality Technical Memorandum: MS Word 6 MB | PDF 418 KB
Appendix C, 2003 Lake Survey Data: MS Word 532 KB | PDF 60 KB
Appendix D, Summary of NPDES Permitting Information: MS Word 229 KB | PDF 77 KB
Appendix E, Summary of Water Management Act Permitting Information: MS Word 72 KB | PDF 29 KB
Connecticut River Basin - 1998
Section I: MS Word 1.6 MB | Section II: MS Word 292 KB
Section III: MS Word 3.2 MB | Section IV: MS Word 239 KB
Errata sheet: MS Word 38 KB
Connecticut River Basin - 2003
Report: MS Word 3.7 MB | PDF 5.2 MB
Appendix A, Assessment Methodology: MS Word 159 KB | PDF 234 KB
Appendix B, 2003 Connecticut River Water Quality: MS Word 5 MB | PDF 1.7 MB
Appendix C, 2003 Connecticut River Biomonitoring: MS Word 649 KB | PDF 849 KB
Appendix D, 2003 Connecticut River Fish Population: MS Word 153 KB | PDF 148 KB
Appendix E, 2003 Connecticut River Benthic Algae: MS Word 1.5 MB | PDF 451 KB
Appendix F, 2003 Connecticut Lakes Survey Data: MS Word 484 KB | PDF 118 KB
Appendix G, 2002 Connecticut Fish Toxics Monitoring: MS Word 323 KB | PDF 79 KB
Appendix H, Connecticut Water Management Act & NPDES Permitting: MS Word 333 KB | PDF 339 KB
Appendix I, Holyoke Coal Tar Site Summary 2007: MS Word 34 KB | PDF 41 KB
Deerfield River Watershed - 2000
Report: MS Word 3.91 MB | PDF 2.6 MB
Appendix: MS Word 2.27 MB | PDF 1 MB
Farmington River Watershed - 2001
Report: MS Word 3.4 MB | PDF 2 MB
Appendix: MS Word 2.7 MB | PDF 709 KB
French & Quinebaug River Watersheds - 2001
Section I: PDF 1.6 MB | Section II: MS Word 527 KB
Section III: MS Word 4.3 MB | Section IV: MS Word 2.9 MB
French & Quinebaug River Watersheds - 2004-08
Report: MS Word 8.6 MB | PDF 2.7 MB
Appendix A: MS Word 111 KB | PDF 88 KB
Appendix B: MS Word 1.9 MB | PDF 946 KB
Appendix C: MS Word 2.4 MB | PDF 617 KB
Appendix D: MS Word 308 KB | PDF 277 KB
Appendix E: MS Word 336 KB | PDF 75 KB
Appendix F: MS Word 150 KB | PDF 52 KB
Appendix G: MS Word 87 KB | PDF 14 KB
Appendix H: MS Word 796 KB | PDF 207 KB
Housatonic River Basin - 1997/1998
Section I: MS Word 377 KB | Section II: MS Word 450 KB
Section III: MS Word 3.8 MB | Section IV: MS Word 4.5 MB
Errata sheet: MS Word 25 KB
Housatonic River Basin - 2002
Report: MS Word 8.3 MB | PDF 3.4 MB
Appendices A-C: MS Word 2.73 MB | PDF 2.6 MB
Appendices D-J: MS Word 4.8 MB | PDF 3.5 MB
Hudson River Basin - 1997
Section I: MS Word 463 KB | Section II: MS Word 292 KB
Section III: MS Word 6.7 MB | Section IV: MS Word 928 KB
Errata sheet: MS Word 26 KB
Hudson River Basin - 2002
Report: MS Word 3 MB | PDF 1.8 MB
Appendix: MS Word 2.4 MB | PDF 1.2 MB
Ipswich River Watershed - 2000
PDF 4 MB
Islands Watershed - 2000
Full report: MS Word 4.5 MB | PDF 2.6 MB
Merrimack River Basin - 1999
Section I: MS Word 1.6 MB | Section II: MS Word 529 KB
Section III: MS Word 5 MB | Section IV: MS Word 1.9 MB
Millers River Watershed - 2000
Section I: PDF 3.85 MB | Section II: PDF 854 KB
Narragansett/Mt. Hope Bay Watershed - 1999
Section I: MS Word 1.6 MB | Section II: MS Word 495 KB
Section III: MS Word 1.8 MB | Section IV: MS Word 2.1 MB
Narragansett/Mt. Hope Bay Watershed - 2004-2008
Report: MS Word 4.2 MB | PDF 1.3 MB
Appendix A, Assessment Methodology: MS Word 148 KB | PDF 207 KB
Appendix B, Summary of North Watuppa Pond Fish Toxics Monitoring 1989-2007: MS Word 73 KB | PDF 83 KB
Appendix C, Summary of Water Management Act Registration & Permitting and NPDES Permitting in Narragansett/Mt Hope Bay Watersheds: MS Word 323 KB | PDF 131 KB
Nashua River Basin - 1998
Section I: MS Word 981 KB | Section II: MS Word 339 KB
Section III: MS Word 7.5 MB | Section IV: MS Word 2.2 MB
Errata sheet: MS Word 34 KB
Nashua River Basin - 2003
Report: MS Word 2.7 MB | PDF 2.4 MB
Associated Technical Documents:
2003 Baseline Lakes Survey (Nashua Excerpt)
MS Word 1.1 MB | PDF 2.1 MB
Nashua River Watershed DWM 2003 Water Quality Monitoring Data
MS Word 1.7 MB | PDF 689 KB
Nashua River Watershed 2003 Periphyton
MS Word 94 KB | PDF 134 KB
North Nashua River 2003 Biological Assessment:
MS Word 970 KB | PDF 491 KB
Continuous Temperature Data on the Squannacook River
MS Word 256 KB | PDF 194 KB
North Coastal Watershed - 1997/1998
Section I: MS Word 822 KB | Section II: MS Word 251 KB
Section III: MS Word 1.8 MB | Section IV: MS Word 1.2 MB
Errata sheet: MS Word 26 KB
North Coastal Watershed - 2002
Executive Summary: MS Word 968 KB | PDF 1.4 MB
Report: MS Word 4.3 MB | PDF 4.8 MB
Appendix: MS Word 2.2 MB | PDF 877 KB
Parker River Watershed - 1999
Section I: MS Word 2.4 MB | Section II: MS Word 2.3 MB
Section III: MS Word 3.5 MB | Section IV: MS Word 2.5 MB
Shawsheen River Watershed - 2000
MS Word 3.29 MB | PDF 2.03 MB
South Shore Coastal Watersheds - 2001
Executive Summary: MS Word 1.9 MB | PDF 953 KB
Introduction, Rivers/Estuaries: MS Word 4.3 MB | PDF 4.2 MB
Lakes: MS Word 1.2 MB | PDF 1 MB
Appendices: MS Word 2.4 MB | PDF 717 KB
SuAsCo Watershed - 2001
Executive Summary/Introduction: MS Word 1.39 MB | PDF 1.2 MB
Assabet Subwatershed: MS Word 2.75 MB | PDF 2.2 MB
Sudbury Subwatershed: MS Word 1.9 MB | PDF 1.35 MB
Concord Subwatershed: MS Word 1.2 MB | PDF 726 KB
Lakes/References: MS Word 1.4 MB | PDF 556 KB
Appendices: MS Word 4.1 MB | PDF 1.75 MB
Taunton River Watershed - 2001
Executive Summary/Introduction: MS Word 1.5 MB | PDF 648 KB
Taunton River/Tributaries: MS Word 2.8 MB | PDF 1.6 MB
Subwatersheds: MS Word 4.8 MB | PDF 3.3 MB
Appendices: MS Word 3.8 MB | PDF 1.2 MB
Ten Mile River Basin - 1997
Section I: MS Word 345 KB | Section II: MS Word 251 KB
Section III: MS Word 2.7 MB | Section IV: MS Word 959 KB
Errata sheet: MS Word 24 KB
Ten Mile River Watershed - 2002
Report: MS Word 1.5 MB | PDF 784 KB
Appendices: MS Word 2.2 MB | PDF 887 KB
Westfield River Watershed - 2001
Report: MS Word 3.8 MB | PDF 2.4 MB
Appendices: MS Word 3MB | PDF 917 KB
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