SWQA Publications

• 2024 Draft Consolidated Assessment and Listing Methodology (CALM)
  • Request for Comments on the 2024, Draft CALM
• 2024 303(d) List Content Introduction 
  • Appendix A - 2024 Draft 303(d)
  • Waters Removed from the 2020/2022 303(d) List
  • Waters Added to the 2024 303(d) List
  • Request for Comments on the 2024 Draft 303(d) List
  • Appendix B - 2024 TMDL Priorities and Comment Opportunity
• 2022 – 2032, Draft TMDL Vision for the Clean Water Act Section 303(d) Program
  • Request for Comments on the 2022 – 2032, Draft TMDL Vision

Other related materials

• Technical Support Document for the Great Bay Estuary Aquatic Life Integrity Designated Use Assessments, 2024 Draft 305(b) Report/303(d) List
• Accessing GIS Layers for the 2024 Assessment
• Impairments Removed Since the 2020/2022 305(b)
• Impairments Added to the 2024 305(b)
• Surface Water Quality Assessment Viewer and Watershed Report Cards
• 2024 Draft Status of Each Assessment Unit

• EPA Approval of New Hampshire's 2020/2022, 303(d) List (March 14, 2022)
• NHDES’ Submittal Letter to EPA (February 18, 2022)
• 2020/2022 Consolidated Assessment and Listing Methodology (CALM)
• 2020/2022 303(d) List Content Introduction
  • Appendix A - 2020/2022 303(d)
  • Waters Removed from the 2018 303(d) List
  • Waters Added to the 2020/2022 303(d) List
  • Appendix B - New Hampshire's Long-term 303(d) Vision
  • Response to Comments on the Draft 303(d) List and CALM

Other related materials

• 2020/2022 Section 305(b) Surface Water Quality Report
• Technical Support Document for the Great Bay Estuary Aquatic Life Integrity Designated Use Assessments, 2020/2022 305(b) Report/303(d) List
• GIS Layers for the 2020/2022 Assessment
• Impairments Removed Since the 2018 305(b)
• Impairments Added to the 2020/2022 305(b)
• Surface Water Quality Assessment Viewer and Watershed Report Cards
• 2020/2022 Status of Each Assessment Unit
• Probabilistic Assessment of Lakes, Ponds and Reservoirs 2017-2019
• Oct. 27, 2020 Data Day Presentation
• EPA memo and milestone template to facilitate timely submission of the 2022 Section 303(d) and 305(b) integrated report (January 25, 2021)
• NHDES’ letter to EPA requesting consideration on the submittal of a combined 2020/2022 Integrated Report (April 12, 2021)
• EPA’s acceptance of NHDES’ request for submittal of a combined 2020/2022 Integrated Report (April 29, 2021)

• EPA Approval of New Hampshire's 2018, 303(d) List (February 25, 2020)
  • Map of 303(d) List Applicability
• 2018 Consolidated Assessment and Listing Methodology (CALM)
• 2018, 303(d) List Content Introduction
  • Appendix A.1 - 2018, 303(d) List
  • Appendix A.2 - Map of 303(d) Impaired Waters
  • Waters Removed Since the 2016 303(d) List
  • Waters Added to the 2018, 303(d) List
  • Appendix B – New Hampshire's Long-term 303(d) Vision
• Response to Comments on the Draft 303(d) List and CALM

Other related materials

• Technical Support Document for the Great Bay Estuary Aquatic Life Integrity Assessments, 2018 305(b) Report/303(d) List
• GIS Layers for the 2018 Assessment
• Impairments Removed Since the 2016 305(b)
• Impairments Added to the 2018 305(b)
• Surface Water Quality Mapper and Watershed Report Cards
• 2018, Status of Each Assessment Unit
• Probabilistic Assessment of Rivers and Streams 2013-2017
• NHDES' withdrawal of request to remove DO saturation impairments (December 13, 2019)
• NHDES' withdrawal of 24 assessment units from consideration in the 2018 303(d) list (January 17, 2020)

• EPA Partial Approval of New Hampshire's 2016, 303(d) List (June 22, 2018)
  • Map of 303(d) List Applicability
• 2016 Consolidated Assessment and Listing Methodology (CALM)
• 2016, 303(d) List Content Introduction
  • Appendix A.1 - 2016, 303(d) List
  • Appendix A.2 - 2016, 303(d)
  • Appendix A.3 - Map of 303(d) Impaired Waters 
  • Waters Removed from the 303(d) List
  • Waters Added to the 303(d) List Since 2014
  • Appendix B – New Hampshire's Long-term 303(d) Vision
• Response to Comments on the Draft 303(d) and CALM

Other related materials

• Technical Support Document for the Great Bay Estuary Aquatic Life Use Support Assessments, 2016 305(b) Report/303(d) List
• GIS Layers for the 2016 Assessment
• Impairments Removed Since the 2014 305(b)
• Impairments Added to the 2016 305(b)
• Surface Water Quality Mapper and Watershed Report Cards
• 2016 Status of Each Assessment Unit

• EPA Approval of New Hampshire's 2012, 303(d) List (September 24, 2015) 
• New Hampshire 2012 Section 305(b) and 303(d) Surface Water Quality Report 
  • Appendix 1: Methodology for Creating Assessment Units (AUs) 
  • Appendix 2: Nonpoint Source Management Reports
  • Appendix 3: NH Monitoring Strategy 
  • Appendix 4: Consolidated Assessment and Listing Methodology (CALM) 
  • Appendix 5: Technical Support Document Assessments of Aquatic Life Use Support in the Great Bay Estuary for Chlorophyll-a, Dissolved Oxygen, Water Clarity, Eelgrass Habitat, and Nitrogen 
  • Appendix 6: List of All Impaired Waters 
  • Appendix 7: Map of All Impaired Waters 
  • Appendix 8: Section 303(d) List of Impaired Waters 
  • Appendix 9: Map of Section 303(d) Impaired Waters 
  • Appendix 10: Waters Removed from the 2010 Section 303(d) List 
  • Appendix 11: Spreadsheet of Assessment Unit IDs 
  • Appendix 12: GIS Files of Assessment Unit IDs 
  • Appendix 13: Status of Each Estuarine Assessment Unit 
  • Appendix 14: Status of Each Impoundment Assessment Unit 
  • Appendix 15: Status of Each Lake/Pond Assessment Unit 
  • Appendix 16: Status of Each Ocean Assessment Unit 
  • Appendix 17: Status of Each River/Stream Assessment Unit in the Androscoggin Basin
  • Appendix 18: Status of Each River/Stream Assessment Unit in the Saco Basin 
  • Appendix 19: Status of Each River/Stream Assessment Unit in the Coastal Basin 
  • Appendix 20: Status of Each River/Stream Assessment Unit in the Merrimack Basin 
  • Appendix 21: Status of Each River/Stream Assessment Unit in the Connecticut Basin 
  • Appendix 22: Status of Each Assessment Unit 
  • Appendix 23: Probabilistic Assessment Details for Estuaries 
  • Appendix 24: Probabilistic Assessment Details for Rivers/Streams 
  • Appendix 25: Probabilistic Assessment Details for Lakes 
  • Appendix 26: Trend Reports for Lakes and Rivers 
  • Appendix 27: New Hampshire Fish Consumption Guidelines 
  • Appendix 28: Data Request – Public Notice and Guidance for Submitting Data 
  • Appendix 29: CALM – Public Notice and Guidance for Submitting Comments 
  • Appendix 30: CALM – Public Comments and NHDES Response 
  • Appendix 31: 303(d) – Public Notice and Guidance for Submitting Comments
  • Appendix 32: 303(d) List - Public Comments    
  • Appendix 33: 303(d) – NHDES Response to Public Comments 
  • Appendix 34: Substantive differences between the Draft and Final 2012 Section 303(d) List of Threatened or Impaired Waters
  • Appendix 35: Response to comments on the changes between the Draft and Final Section 303(d) List of Threatened or Impaired Waters 
  • Appendix 36: Benthic Index of Biological Integrity 
  • Appendix 37: Fish Indexes of Biotic Integrity 
    • Coldwater Indicator Fish Species Report 
    • Coldwater Fish Assemblage IBI 
    • Transitional Water Fish Assemblage IBI 
  • Appendix 38: Level 1 Landscape Level Wetlands Assessment (ver. 2) 
• Surface Water Quality Mapper and Watershed Report Cards 
   

• EPA Partial Approval of New Hampshire's 2014, 303(d) List (March 16, 2018)
• Consolidated Assessment and Listing Methodology (CALM)
  • Response to Comments on CALM
• 2014, 303(d) List Content Introduction
  • 2014, 303(d) List
  • Waters Removed Since the 2012 Section 303(d) List
  • Map of 303(d) Impaired Waters
• Response to Comments on the Draft Section 303(d) List of Threatened or Impaired Waters

Other related materials

• Technical Support Document for the Great Bay Estuary Aquatic Life Use Support Assessments, 2014 305(b) Report/303(d) List 
• 2014 Status of Each Assessment Unit
• Surface Water Quality Mapper and Watershed Report Cards
• GIS Layers for the 2014 Assessment
• Impairments Removed Since the 2012 305(b)
• Impairments Added to the 2014 305(b)/303(d)

• EPA Approval of New Hampshire's 2010, 303(d) List (September 7, 2011) 
• 2010 Consolidated Assessment and Listing Methodology (CALM) 
• 2010 303(d) List Content Introduction 
  • Appendix A – 2010, 303(d) List 
  • Appendix A – 2010, 303(d) List 
  • Map of 303(d) Impaired Waters 
  • Waters Removed from the 2008 Section 303(d) List 
• Response to Comments on the 2010 Draft 303(d) List 
• Response to Comments on the Draft 2010 CALM 

Other related materials

• GIS Layers for the 2010, 305(b)/303(d) List 
• Surface Water Quality Report Cards 
• 2010 List of All Impaired Waters 
   

If you need accommodations for any of these documents or would like older assessment cycle documents that are not listed on this page, please contact us.