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Delaware Estuary Aquatic Life Designated Use Study & Related Water Quality Reports

• A Pathway for Continued Restoration: Improving Dissolved Oxygen in the Delaware River Estuary (PDF; 2024)
  
  
• Modeling Eutrophication Processes in the Delaware River Estuary: Three-Dimensional Hydrodynamic Model (PDF; 2024)
  
  
• Modeling Eutrophication Processes in the Delaware River Estuary: Three-Dimensional Water Quality Model (PDF; 2024)
  
  
  • Appendices A-K (ZIP; 2024)
    
    
• Nitrogen Reduction Cost Estimation Study: Final Summary Report (PDF; report submitted to DRBC by Kleinfelder, Inc.; 2021)
  
  
  • View Addendum submitted to the DRBC in September 2022 (PDF; 2022)
    
    
  • View Addendum 2 submitted to the DRBC in August 2023 (PDF; 2023)
    
    
• Report to DRBC on Concentrations of Nutrients and Chlorophyll-a and Rates of Respiration and Primary Production in Samples from the Delaware River Collected in May and July 2019 (PDF; report submitted to DRBC by the Horn Point Laboratory, University of Maryland; 2020 revised)
  
  
• Report to DRBC on Concentrations of Nutrients and Chlorophyll-a and Rates of Respiration and Primary Production in Samples from the Delaware River Collected in May and July 2018 (PDF; report submitted to DRBC by the Horn Point Laboratory, University of Maryland; 2019 revised)
  
  
• A Review of Dissolved Oxygen Requirements for Key Sensitive Species in the Delaware Estuary (PDF; report submitted to DRBC by The Academy of Natural Sciences; 2018)
  
  
• A Methodology for Evaluating Dissolved Oxygen Requirements of Species in the Delaware Estuary (PDF; report submitted to DRBC by The Academy of Natural Sciences; 2018)
  
  
• Existing Use Evaluation for Zones 3, 4, & 5 of the Delaware Estuary Based on Spawning and Rearing of Resident and Anadromous Fishes (PDF; 2015)
  
  
• Report to DRBC on Concentrations of Nutrients and Chlorophyll-a and Rates of Respiration and Primary Production in Samples from Delaware Bay Collected in May and July 2014 (PDF; report  submitted to DRBC by the Horn Point Laboratory, University of Maryland; 2019 revised)
  
  
• Impact of Aquatic Vegetation on Water Quality of the Delaware River Estuary (PDF; submitted to DRBC by The Academy of Natural Sciences; 1998)
  
  
• Dissolved Oxygen Requirements of a "Fishable" Delaware River Estuary (PDF; Ad Hoc Task Force Report to the DRBC; 1979)

Microplastics

• Reducing Microplastics in the Delaware River Estuary (PDF; 2022)

Contaminants of Emerging Concern

• PFAS Water Quality and Fish Tissue Assessment Study - Year 3 (PDF; 2026)
  
  
• Characterization of PFAS in Surface Water, Sediment and Fish in the Pennsylvania Coastal Zone (PDF; 2025)
  
  
• Enhanced Monitoring for Toxics and Emerging Contaminants in Delaware Estuary Tributaries (PDF; 2025)
  
  
• Per- and Polyfluoroalkyl Substances (PFAS) in Urbanized Section of the Delaware River Watershed: Risk Assessment and Geographical Distribution (PDF; paper co-authored by DRBC staff; 2025)
  
  
  • Full Citation: Akbari, E., Shah, T., Nazaruk, K. et al. Per- and Polyfluoroalkyl Substances (PFAS) in Urbanized Section of the Delaware River Watershed: Risk Assessment and Geographical Distribution. Water Air Soil Pollut 236, 192 (2025).
    
    
  • Online:  
    
    
• PFAS Water Quality and Fish Tissue Assessment Study: Year 2 (PDF; 2024)
  
  
• PFAS Water Quality and Fish Tissue Assessment Study: Year 1 (PDF; 2023)
  
  
• PFAS in Surface Water, Sediment and Fish in the Pennsylvania Coastal Zone (PDF; 2023) 
  
  
• (2020; authored by DRBC staff and published in Integrated Environmental Assessment and Management, 2021;17:411–421.) 
  
  
  • Full Citation: MacGillivray, A.R. (2021) Temporal trends of PFAS in Delaware River Fish, USA. Integrated Environmental Assessment and Management. 17(2) 411-421)
    
    
• (2020; co-authored by DRBC staff and published in AIMS Environmental Science, (4): 302-319)
  
  
• (2013; co-authored by DRBC staff published in the Water Quality Research Journal of Canada Vol. 48/Issue 4)
  
  
• Contaminants of Emerging Concern in the Tidal Delaware River: Pilot Monitoring Survey 2007-2009 (PDF; 2013 revised)
  
  
  • Appendix E: 2017 Monitoring Survey of PPCP and Hormones in Surface Water to Contaminants of Emerging Concern in the Tidal Delaware River Pilot Monitoring Survey (PDF; 2017)
    
    
• Emerging Contaminants of Concern in the Delaware River Basin: Vulnerability Assessment Preliminary Report (PDF; 2007)

Ambient Toxicity

• Monitoring in Tributaries of the Delaware River for Ambient Toxicity: 2016 Narrative Report (PDF; 2017)
  
  
• Monitoring in Tributaries of the Delaware River for Ambient Toxicity: 2015 Narrative Report (PDF; 2016)
  
  
• Monitoring the Tidal Delaware River for Ambient Toxicity: 2013 and 2014 Narrative Report (PDF; 2016)
  
  
• Monitoring the Tidal Delaware River for Ambient Toxicity: 2012 Narrative Report (PDF; 2013)
  
  
• (2010; authored by DRBC staff and published in Integrated Environmental Assessment and Management, 2011;7:466-477.
  
  
  • Full Citation: MacGillivray, AR, DE Russell, SS Brown, TJ Fikslin, R Greene, RA Hoke , C Nally and L O’Donnell. 2011. Monitoring the Tidal Delaware River for Ambient Toxicity. Integr. Environ. Assess. Manag.: 7 (3) 466-477.

PCBs and other Toxic Pollutants

• Enhanced Monitoring for Toxics and Emerging Contaminants in Delaware Estuary Tributaries (PDF; 2025)
  
  
• Identification and Assessment of Polychlorinated Biphenyls (PCBs) in Stormwater in the Delaware Estuary (PDF; 2014)
  
  
• Implementation Strategy for Polychlorinated Biphenyls for Zones 2-6 of the Delaware Estuary (PDF; 2013)
  
  
• Water Quality Model for Carbon and PCB Homologs for Zones 2-6 of the Delaware River Estuary (PDF; 2011)
  
  
• PCB TMDL for DRBC Zone 6 (Delaware Bay) (PDF; 2006)
  
  
• Revised Calibration of the Water Quality Model for the Delaware Estuary for Penta-PCBs and Carbon (PDF; 2006)
  
  
• Bioaccumulation of PCBs in the Delaware River Estuary (PDF; 2004)
  
  
• PCB TMDL for DRBC Zones 2-5 (Tidal Delaware River) (PDF; 2003)
  
  
  • DRBC DYNHYD5 Hydrodynamic Model (Version 2.0) and Chloride Water Quality Model for the Delaware Estuary (PDF)
    
    
    • Appendix A: Hydrodynamic Model Input File (PDF)
      
      
    • Appendix B: Chloride Model Input File (PDF)
      
      
    • Appendix C: Tidal Heights Calibration Results (PDF)
      
      
    • Appendix D: Boatrun Chloride Calibration Results (pdf)
      
      
  • DRBC PCB Water Quality Model for the Delaware Estuary (PDF)
    
    
• Sedimentological and Geophysical Survey of the Upper Delaware Estuary (PDF; 2003; submitted to DRBC by the University of Delaware) 
  
  
• Executive Summary to the Public Hearing Response Document on the Proposed Determination Regarding the Assimilative Capacity of the Tidal Delaware River for Volatile Organics and Toxicity (PDF; 2000)
  
  
• Wasteload Allocations for Volatile Organics and Toxicity: Phase I TMDLs for Toxic Pollutants in the Delaware River Estuary (PDF; 1998)
  
  
• Study of the Loadings of Polychlorinated Biphenyls from Tributaries and Point Sources Discharging to the Tidal Delaware River (PDF; 1998)
  
  
• Implementation Policies and Procedures: Phase I TMDLs for Toxic Pollutants in the Delaware River Estuary (PDF; 1995)

Related to Oil Spills

• Public鈥怭rivate Partnership Successfully Test Early Oil Spill Detection Sensor in 2011 in the Tidal Delaware River (PDF; 2012)
  
  
• Delaware River and Bay Oil Spill Advisory Committee Report (PDF; 2010)

Monitoring Reports

• Monitoring Report Covering Developments and Data Collected or Reported during 1999-2003 (PDF; 2004)
  
  
• Monitoring Report Covering Developments and Data Collected or Reported in 1997 (PDF; 1998)

Other

• Sedimentological and Geophysical Survey of the Upper Delaware Estuary (PDF; 2003; submitted to DRBC by the University of Delaware) 
  
  
  • Download graphic summary of report created by DRBC staff (PDF)
    
    
• Status of CBOD₂₀ Wasteload Allocations (PDF; 2001)
  
  
• Development of a Hydrodynamic and Water Quality Model for the Delaware River (PDF; 1998; prepared for DRBC by HydroQual, Inc.)
  
  
  • Development of a Hydrodynamic and Water Quality Model for the Delaware River: Appendices A & B (PDF; 1998; prepared for DRBC by HydroQual, Inc.)
    
    

Special Protection Waters

• Existing Water Quality Atlas of the Delaware River Special Protection Waters (2016)
  
  
• Lower Delaware River Special Protection Waters Assessment of Measurable Changes to Existing Water Quality (2016)
  
  
• Eligibility Determination Reports for DRBC's Designation of the Lower Delaware River as Special Protection Waters (SPW)

Aquatic Species/In-Stream Needs

• Growth and Survival of Caged Mussels in the Non-Tidal Delaware River (PDF; 2022)
  
  
• Freshwater Mussel Community Composition and Relative Abundance in the Lower Delaware River (PDF; 2014)
  
  
• Pilot Study: Implementation of a Periphyton Monitoring Network for the Non-Tidal Delaware River (PDF; 2007)
  
  
• Delaware River Rooted Aquatic-Plant Biomass Study from Port Jervis, N.Y. (Route 84 Bridge) to Milford, Pa. (Route 206 Bridge) (PDF; 1999)

Natural Gas Development

• Pre Natural Gas Drilling: Baseline Monitoring Report for the Delaware River (PDF; 2017)
  
  
• Monitoring for Baseline Radiochemistry before Natural Gas Development in the Delaware River Basin (PDF; 2015)
  
  
• Toxicity Tests for Baseline Monitoring of Water Quality in Upper Delaware River Basin: Summary Report (PDF; 2013)

Other

• Modernized DSS: A Habitat Model for the Upper Delaware River (NJ, NY, PA) (PDF; 2022)
  
  
• Pocono Creek Watershed: Framework for Sustainable Management - Final Report (2009)
  
  
• DRBC's Compilation and Assessment of Water Column Data Collected in Response to August 2005 PPL Martins Creek Fly Ash Spill (PDF; 2006)
  
  
• Paradise Creek Watershed Restoration Plan: Phase 1 Technical Report (PDF; 2005)
  
  
• 2001 Lehigh River Water Quality Monitoring Report and Supporting Documents (PDF; 2002)
  
  

Water Quality Assessments

• Delaware River and Bay Water Quality Assessments
  
  

Water Quality Programs Overview

• Water Quality Programs of the Delaware River Basin Commission (PDF; 2026)
  
  

Nutrients

• Impact of Treatment Type on Municipal Wastewater Treatment Effluent Nutrient Concentrations in the Delaware River Basin (PDF; 2016)
  
  
• Point Discharge Effluent Nutrient Concentrations in the Delaware River Basin: A Preliminary Review (PDF; 2014)
  
  

Toxics/Metals

• Delaware Toxics Reduction Program (DelTRiP) Annual Reports (2006 & 2007)
  
  
• Revised Procedure for Converting Total Recoverable Water Quality Criteria for Metals to Dissolved Criteria (PDF; 1995)
  
  
• Revised Aquatic Life Criteria for Lead (PDF; 1995)

Recreation/Fishing

• Delaware River Creel Survey 2002 (PDF; 2003 report prepared by Versar, Inc.)
  
  

DRBC Water Resources Program

• DRBC Water Resources Program FY26-28 (PDF; 2025)

DRBC Water Use Reports

• Water Withdrawal and Consumptive Use Estimates for the Delaware River Basin (1990-2017) With Projections Through 2060 (2021)

DRBC Groundwater Reports

• Estimated Groundwater Availability in the Delaware River Basin 2020-2060 (PDF; 2022)

DRBC Storage Study

• Evaluation of Additional Storage in the Delaware River Basin (2023)

DRBC State of the Basin Reports

• State of the Basin 2025 (PDF)
  
  
• State of the Basin 2019
  
  
• State of the Basin 2013
  
  
• State of the Basin 2008

DRBC Planning Documents

• Comprehensive Plan (PDF; adopted March 1962)
  
  
  • Addendum (PDF; adopted July 1962)
    
    
• The Delaware River Basin Comprehensive Level B Study (PDF; 1981)
  
  
• Comprehensive Plan (PDF; 2001; updated on an ongoing basis)
  
  
• Water Resources Plan for the Delaware River Basin (Basin Plan) (2004)

Water Audit Reporting

• A Comprehensive Assessment of the Delaware River Basin Commission's Water Audit Program (2012-2021) (PDF; 2023)
  
  
• Analysis of CY2016 Water Audit Data from Public Water Supply Systems in the Delaware River Basin (PDF; 2018)
  
  
• Analysis of CY2014 Water Audit Data from Public Water Supply Systems in the Delaware River Basin (PDF; 2016)
  
  
• Analysis of CY2012 Water Audit Data from Public Water Supply Systems in the Delaware River Basin (PDF; 2015)

Other

• Delaware Estuary Regional Sediment Management Plan (2013; prepared by the Delaware Estuary Regional Sediment Management Plan Workgroup; DRBC is member)
  
  
• Final Report (PDF)
  
  
• Appendices (PDF)
  
  
• Enhancing Multi-Jurisdictional Use and Management of Water Resources for the Delaware River Basin: NY, NJ, PA, and DE (2008)
  
  
• Flowing Toward the Future (PDF; 1999)
  
  

Hydrologic Reports

• Weekly Reports (and links to additional hydro data)
  
  
• Monthly Data Summary Reports
  
  
• Annual Hydrologic Conditions Reports

Salt Front

• Salt Front Calculation Method (PDF; 2026)

Salinity & Sea Level Rise

• The Impact of Sea Level Rise on Salinity Intrusion in the Delaware River Estuary (PDF; 2025)
  
  
• Three-Dimensional Hydrodynamic and Salinity Model for the Delaware River Estuary Calibration Report (PDF; 2025) 
  
  
• Pennsylvania Coastal Resources Management Program: Sea Level Rise and Associated Effects in the Delaware Estuary Coastal Zone (DECZ) (PDF; 2022)

Flow & Drought Management

• Modernized DSS: A Habitat Model for the Upper Delaware River (NJ, NY, PA) (PDF; 2022)
  
  
• An Overview of Drought in the Delaware River Basin (PDF; 2019)
  
  
• Ecosystem Flow Recommendations for the Delaware River Basin (2013; prepared for DRBC by The Nature Conservancy)
  
  
  • Final Report (PDF)
    
    
  • Appendices (PDF)
    
    
• Development and Calibration of a Hydrodynamic Model of the Tidal Rancocas Creek (PDF; 2006)
  
  
• Strategy for Resolution of Interstate Flow Management Issues in the Delaware River Basin (PDF; 2004 report prepared for DRBC by HydroLogics, Inc.)
  
  
• (PDF; 1994)
  
  
• Good Faith Recommendations (PDF; 1982)

Flood Mitigation

• DRBC Flood Analysis Model
  
  
• Recommendations of the DRBC Flood Advisory Committee for more Effective Floodplain Regulations in the Delaware River Basin (PDF; 2009)
  
  
• Flood Warning Improvement Recommendations for the Delaware River Basin (PDF; 2009 report prepared by NOAA/National Weather Service - Eastern Division)
  
  
• Multi-Jurisdictional Flood Mitigation Plan For The Non-Tidal N.J. Section of the DRB (2008)
  
  
• DRBC Interstate Flood Mitigation Task Force Final Report/Action Agenda (PDF; 2007)
  
  
• High Flow Management Objectives for N.J. Non-Coastal Waters (PDF; 2000)
  
  

• A Framework for the Delaware River Basin Commission's Water Resources Resilience Plan (PDF; 2026)
  
  

Paper copies of publications may be requested by contacting the Commission (a fee for copying and associated labor costs may apply).