Data Documentation
Core Documentation & Reference Materials
Lookup Tables
- Water Quality Data Lookup Tables [XLSX, 87 KB, Updated 2025]
- Living Resources Data Lookup Tables [XLSX, 99 KB, Updated 2026]
- Fluorescence Data Lookup Tables [XLSX, 32 KB, Updated 2026]
Cruise Schedules
- CBP Water Quality Monitoring Cruise Schedule 1984–2025 [PDF, 2.3 MB, Updated 2026]
Geographical Attributes and Maps
- HUC8 Subbasin 8-digit hydrologic units map [PDF, 829 KB, Updated 2026]
- HUC12 Subwatershed 12-digit hydrologic unit map [PDF, 2.1 MB, Updated 2025]
- HUC12 Subwatershed 12-digit hydrologic unit GIS layer
- FIPS County/Incorporated City GIS layer
- Monitoring Segment (CBSeg2003) GIS layer
- Chesapeake Bay Program Analytical Segmentation Scheme [PDF, 279.5 KB, Updated 2005]
- Monitoring Segmentsheds (SegmentShed2009) GIS layer
- Monitoring Segmentsheds (SegmentShed2009) map [PDF, 1.3 MB, Updated 2011]
- Fixed Mainstem and Tributary Monitoring Stations [PDF, 819.5 KB, Updated 2012]
- Fixed Tidal Monitoring Stations GIS layer
- EPA Level IV Ecoregion map [PDF, 2.9 MB, Updated 2003]
- CBPBioRegion (ICPRB Bioregion for Chessie BIBI) online map
- Map of a typical horizontal fluorescence transect pattern for a single monitoring cruise [PDF, 279.5 KB, Updated 2001]
Metadata Files
We are in the process of updating our metadata management system. Please contact datamangers@chesapeakebay.net to request metadata not yet available at this webpage.
- Maryland Mesozooplankton Monitoring Program:
2012 - Maryland Microzooplankton Monitoring Program:
2012 - Maryland Phytoplankton and Picoplankton Monitoring Program:
2012 - Maryland Primary Production Monitoring Program:
2012 - Virginia Mesozooplankton Monitoring Program:
2012 - Virginia Microzooplankton Monitoring Program:
2012 - Virginia Phytoplankton and Picoplankton Monitoring Program:
2012 - Virginia Primary Production Monitoring Program:
2012
Metadata files are provided by Data Provider. The most up-to-date documentation for Nontidal Benthic data is available in Appendix F of Methods and Procedures for Calculating the Chesapeake Basin-wide Index of Biotic Integrity (Chessie BIBI).
- Anne Arundel County: 2013
- City of Baltimore: 2013
- Baltimore County Department of Environmental Protection and Sustainability: 2013
- Delaware Department of Natural Resources and Environmental Control: 2013
- District of Columbia Department of the Environment: 2013
- USEPA-EMAP and MAIA Programs: 2013
- USEPA-Wadeable Streams Assessment Program: 2013
- Fairfax County Virginia: 2013
- Fredrick County Maryland: 2013
- Howard County Maryland: 2011
- Loudoun County Virginia: 2011
- Maryland Biological Stream Survey: 2013
- Maryland Streamwaders: 2011
- Montgomery County Maryland: 2013
- New York Department of Environmental Conservation: 2013
- Pennsylvania Department of the Environment: 2013
- Prince Georges County Maryland: 2013
- Susquehanna River Basin Commission: 2013
- United States Forest Service: 2013
- United States Geological Survey National Water-Quality Assessment Program: 2013
- Virginia Department of Environmental Quality: 2013
- Virginia Commonwealth University Interactive Stream Assessment Resource Program: 2013
- West Virginia Department of Environmental Protection: 2013
Chessie BIBI Analysis Toolkit
The Chesapeake Basin-wide Index of Biotic Integrity (Chessie BIBI) is calculated using nontidal benthic macroinvertebrate monitoring data to assess stream condition across the Chesapeake Bay watershed. Monitoring data and Chessie BIBI scores are available at the Living Resources section of the DataHub.
The Chessie BIBI Analysis Toolkit provides the templates, reference files, and analysis script required to calculate the Chessie BIBI. Further information and Chessie-BIBI publications are available at Chessie BIBI Index - ICPRB
Chessie BIBI Analysis Toolkit ZIP Folder contents:
- Data call template, including lookup values (XLSX)
- Guidance and template for the Chessie BIBI Input File (XLSX)
- Chessie BIBI Analysis Script (RMD)
- ICPRB Bioregion Shapefile (zipped folder)
- Master Taxa file (XLSX)
- Readme Documentation (DOCX)
Download the latest Chessie BIBI Analysis Toolkit here [ZIP Folder, 2.7 MB, Updated December 2025]
Archived Documentation
Archived documentation is provided for reference. While database structures have evolved over time, these materials may still provide useful background information or historical context.
Data Dictionaries
- Water Quality Database Design and Data Dictionary [PDF, 3.1 MB, Updated 2004]
- DUET Data Submittal Lookup Table Guide [PDF, 520.4 KB, Updated 2016]
Standard Operating Procedures
- Standard Operating Procedure for Elizabeth River Program Cruise Deployment [PDF, 785.3 KB, Updated 2001]
- Standard Operating Procedure for Virginia Chesapeake Bay Program Cruise Deployment [PDF, 762.7 KB, Updated 2001]
Reports
- Chesapeake Bay Program Mainstem Coordinated Split Sample Program Report 1994–1998 [PDF, 628.3 KB, Updated 1998]
User Guides
- 2012 Guide to Using Chesapeake Bay Program Water Quality Monitoring Data [PDF, 1.4 MB, Updated 2012]
- 1993 Guide to Using Chesapeake Bay Program Water Quality Monitoring Data [PDF, 346.3 KB, Updated 1993]
- CIMS Data Upload Quality Assurance Tool Users Guide [PDF, 91.5 KB, Updated 2002]
Metadata
- Maryland Patuxent River Monitoring Project:
2002
- The 2012 User's Guide to CBP Biological Monitoring Data [PDF, 1.3 MB, Updated 2012]
- A Comprehensive List of Chesapeake Bay Basin Species 2007 [PDF, 1.7 MB, Updated 2007]
Data Dictionaries
- Phytoplankton and Zooplankton Database Design and Data Dictionary [PDF, 305.1 KB, Updated 2008]
- Maryland Mesozooplankton Monitoring Project Data Documentation [PDF, 299.5 KB, Updated 2007]
- Maryland Microzooplankton Monitoring Project Data Documentation [PDF, 325.4 KB, Updated 2009]
- Maryland Phytoplankton Monitoring Project Data Documentation [PDF, 310.9 KB, Updated 2010]
- Maryland Primary Productivity Monitoring Project Data Documentation [PDF, 132.3 KB, Updated 2008]
- Virginia Mesozooplankton Monitoring Project Data Documentation [PDF, 304.9 KB, Updated 2007]
- Virginia Microzooplankton Monitoring Project Data Documentation [PDF, 229.7 KB, Updated 2005]
- Virginia Phytoplankton Monitoring Project Data Documentation [PDF, 173.2 KB, Updated 2011]
- Virginia Picoplankton Monitoring Project Data Documentation [PDF, 173.2 KB, Updated 2011]
- Virginia Primary Productivity Monitoring Project Data Documentation [PDF, 115.9 KB, Updated 2010]
Quality Assurance Plans
- Quality Assurance Plan for Maryland Microzooplankton and Monitoring [PDF, 12.1 MB, Updated 2000]
- Quality Assurance Plan for Maryland Phytoplankton and Picoplankton Monitoring [PDF, 189.1 KB, Updated 2009]
- Quality Assurance Plan for Maryland Primary Production Monitoring [PDF, 173.2 KB, Updated 2008]
- Quality Assurance Plan for Virginia Phytoplankton and Picoplankton Monitoring Program [PDF, 399.2 KB, Updated 2010]
- Quality Assurance Plan for Virginia Primary Production Monitoring Program [PDF, 407.4 KB, Updated 2009]
- Quality Assurance Plans for Virginia Mesozooplankton and Microzooplankton Monitoring [PDF, 994.4 KB, Updated 2002]
Standard Operating Procedures
- Maryland Chesapeake Bay Mesozooplankton Standard Operating Procedures [PDF, 4.8 MB, Updated 2001]
Reports
- A Review of Historic Chesapeake Bay Program Zooplankton Data and Analysis of Recounted Archived Samples [PDF, 407.6 KB, Updated 2007]
Data Dictionaries
- Tidal Benthic Monitoring Database: Database Design Documentation and Data Dictionary – Version 4.0 [PDF, 327.9 KB, Updated 2010]
- SBEN NOAA–Coastal Ocean Assessments – Status and Trends – Special Survey [PDF, 462.8 KB, Updated 2012]
- HBEN Maryland Power Plant Research Program: Long Term Benthic Monitoring and Assessment Program [PDF, 178.8 KB, Updated 2012]
- USEPA – Mid-Atlantic Integrated Assessment – Special Chesapeake Bay Data Subset [PDF, 263.0 KB, Updated 2012]
- USEPA – EMAP Virginian Province – Special Chesapeake Bay Data Subset [PDF, 360.7 KB, Updated 2012]
- SBEN Virginia Estuarine Probabilistic Monitoring Program Data Dictionary [PDF, 423.4 KB, Updated 2012]
- Maryland Benthic Monitoring Project Data Documentation [PDF, 452 KB, Updated 2013]
- Virginia Benthic Monitoring Project Data Documentation [PDF, 421 KB, Updated 2013]
- HBEN Virginia Historic Lower Chesapeake Bay and Tribs Benthic Taxonomic Data Project Documentation [PDF, 318 KB, Updated 2012]
Quality Assurance Plans
- Quality Assurance Plan for the Virginia Benthic Monitoring Program 2010–2011 [PDF, 930.7 KB, Updated 2010]
- Quality Assurance Plan for the Maryland Benthic Monitoring Program 2011–2012 [PDF, 6.4 MB, Updated 2011]
- Quality Assurance Plan for the Virginia Benthic Monitoring Program [PDF, 688 KB, Updated 2003]
- Quality Assurance Plan for the Maryland Benthic Monitoring Program [PDF, 20.2 MB, Updated 2001]
Data Dictionaries
- The Non-Tidal Benthic Monitoring Database: Version 3.0; Database Design Documentation and Data Dictionary [PDF, 2.0 MB, Updated 2013]
Data Dictionaries
- Maryland Fluorescence Monitoring Project Data Documentation [PDF, 54.3 KB, Updated 2009]
- Virginia Fluorescence Monitoring Project Data Documentation [PDF, 162.1 KB, Updated 2011]
- Fluorescence Monitoring Database Design and Data Dictionary [PDF, 242.7 KB, Updated 2009]
Quality Assurance Plans
- Quality Assurance Plan for Potomac River In-Vivo Fluorescence [PDF, 7.2 MB, Updated 2001]
- Quality Assurance Plan for Maryland Phytoplankton and Picoplankton Monitoring [PDF, 189.1 KB, Updated 2009]
- Quality Assurance Plan for Virginia In-Vivo Fluorometry [PDF, 47.4 KB, Updated 1997]
