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Chesapeake Bay

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How healthy is your Chesapeake Bay?

C+

Chesapeake Bay has moderate health in 2023

Learn more
C

Chesapeake Bay Watershed has moderate health in 2023

Learn more
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© 2025 UMCES

  • Home
  • About
  • The Process
  • Contact
  • Report Cards
    • Chesapeake Bay
      • Bay Health
      • Watershed Health
      • Indicators
        • Overall Health Index
        • Dissolved Oxygen
        • Nitrogen
        • Phosphorus
        • Turbidity
        • Water Quality Index
        • Chlorophyll a
        • Water Clarity
        • Aquatic Grasses
        • Benthic Community
        • Blue Crab
        • Bay Anchovy
        • Striped Bass
        • Protected Lands
        • Stewardship
        • Social Index
        • Walkability
        • Heat Vulnerability Index
        • Fish community
        • Median income
        • Housing affordability
        • Income inequality
        • Jobs growth
        • Environmental Justice Index
      • Bay Regions
        • Lower Eastern Shore
        • Choptank River
        • Upper Eastern Shore
        • Upper Western Shore
        • Patapsco and Back Rivers
        • Lower Western Shore
        • Patuxent River
        • Potomac River
        • Rappahannock River
        • York River
        • James River
        • Elizabeth River
      • Watershed Regions
        • Overall
        • Chemung
        • Choptank
        • Elizabeth
        • Juniata
        • Lower Eastern Shore
        • Lower James
        • Lower Potomac
        • Lower Susquehanna
        • Lower Western Shore
        • Middle James
        • Middle Potomac
        • Middle Susquehanna
        • Patapsco and Back
        • Patuxent
        • Rappahannock
        • Shenandoah
        • Upper Eastern Shore
        • Upper James
        • Upper Potomac
        • Upper Susquehanna
        • Upper Western Shore
        • West Branch Susquehanna
        • York
      • Issues
        • 2023
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        • 2009
        • 2008
        • 2007
        • 2006
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    • Clinton River
      • Health
      • Indicators
        • Overall Health Index
        • Household Income
        • Local Ownership
        • Cost of Flooding
        • Income Equality
        • Trade
        • River Economy
        • Wetlands
        • Tree Cover
        • Forests
        • Fish Populations
        • Bird Diversity
        • Benthic Community
        • Protected Lands
        • Fish Consumption
        • Bacteria
        • Heat Vulnerability
        • Air Quality Index
        • Environmental Justice
        • Flooding
        • Sewer Overflows
        • Impervious Surfaces
        • Farmland
        • Affordable Housing
        • Walkability
        • Parks
        • Beach Access
        • Watercraft Access
        • Fishing
        • Nitrogen
        • Phosphorus
        • Dissolved Oxygen
        • Water Temperature
        • Turbidity
      • Region
        • Clinton River
      • Issues
      • Publications
      • About
    • Detroit River
      • Health
      • Indicators
        • Overall Health Index
        • Household Income
        • Local Ownership
        • Cost of Flooding
        • Income Equality
        • Trade
        • River Economy
        • Wetlands
        • Tree Cover
        • Forests
        • Fish Populations
        • Bird Diversity
        • Benthic Community
        • Protected Lands
        • Fish Consumption
        • Bacteria
        • Heat Vulnerability
        • Air Quality Index
        • Environmental Justice
        • Flooding
        • Sewer Overflows
        • Impervious Surfaces
        • Farmland
        • Affordable Housing
        • Walkability
        • Parks
        • Beach Access
        • Watercraft Access
        • Fishing
        • Nitrogen
        • Phosphorus
        • Dissolved Oxygen
        • Water Temperature
        • Turbidity
      • Region
        • Detroit River Watershed
      • Issues
      • Publications
      • About
    • Guanabara Bay
      • Bay Health
      • Basin Health
      • Indicators
        • Overall Health Index
        • Dissolved Oxygen
        • Biological Oxygen Demand
        • Dissolved Inorganic Nitrogen
        • Total Phosphorus
        • Orthophosphate
        • Turbidity
        • Fecal coliform
      • Sanitation
      • Issues
      • Publications
      • About
    • Huron River
      • Health
      • Indicators
        • Overall Health Index
        • Household Income
        • Local Ownership
        • Cost of Flooding
        • Income Equality
        • Trade
        • River Economy
        • Wetlands
        • Tree Cover
        • Forests
        • Fish Populations
        • Bird Diversity
        • Benthic Community
        • Protected Lands
        • Fish Consumption
        • Bacteria
        • Heat Vulnerability
        • Air Quality Index
        • Environmental Justice
        • Flooding
        • Sewer Overflows
        • Impervious Surfaces
        • Farmland
        • Affordable Housing
        • Walkability
        • Parks
        • Beach Access
        • Watercraft Access
        • Fishing
        • Nitrogen
        • Phosphorus
        • Dissolved Oxygen
        • Water Temperature
        • Turbidity
      • Region
        • Huron River
      • Issues
      • Publications
      • About
    • Lake Erie
      • Lake Health
      • Watershed Health
      • Indicators
        • Overall Health Index
        • Total Phosphorus
        • Dissolved Phosphorus
        • Total Nitrogen
        • Nitrate + Nitrite
        • Chlorophyll a
        • Walleye
        • Yellow Perch
        • Emerald Shiner
        • Bloom Index
        • Source Water Toxin
        • Recreational Toxin
        • Total Suspended Solids
        • Fish
        • Macroinvertebrates
        • Habitat Quality
        • Fish Consumption
        • Pesticide
      • Lake Regions
        • Overall Lake
        • Northwest
        • Southwest
        • Maumee
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        • Eastern Islands
        • Sandusky Bay
      • Watershed Regions
        • Overall Watershed
        • Auglaize
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        • Detroit
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        • Raisin/Huron
        • St. Joseph
        • St. Marys
        • Lower Maumee
        • Lower Thames
        • Sandusky
        • Tiffin
        • Upper Maumee
        • Upper Thames
      • Issues
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    • Long Island Sound
      • Health
      • Indicators
        • Overall Health Index
        • Dissolved Oxygen
        • Chlorophyll a
        • Water Clarity
        • Dissolved Organic Carbon
      • Regions
        • Overall
        • Western Narrows
        • Eastern Narrows
        • Western Basin
        • Central Basin
        • Eastern Basin
      • Issues
        • 2018
        • 2015
        • 2013
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    • Maryland Coastal Bays
      • Health
      • Indicators
        • Overall Health Index
        • Chlorophyll a
        • Dissolved Oxygen
        • Nitrogen
        • Phosphorus
        • Seagrass
        • Hard Clams
      • Regions
        • Overall
        • Assawoman Bay
        • Chincoteague Bay
        • Isle of Wight Bay
        • Newport Bay
        • Sinepuxent Bay
        • St. Martin River
      • Issues
        • 2023
        • 2022
        • 2021
        • 2019
        • 2018
        • 2017
        • 2016
        • 2015
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      • About
    • Orinoco River
      • Health
      • Indicators
        • Water Quality Index
        • Risks to Water Quality
        • Water Supply and Demand
        • Natural Land Cover
        • Stable Forest Area
        • Terrestrial Connectivity
        • Fire Frequency
        • Ecosystem Services
        • Human Nutrition
        • Mining in Sensitive Ecosystems
        • River Dolphins
      • Regions
        • Arauca River
        • Atabapo River
        • Bita River
        • Guaviare River
        • Inírida River
        • Matavén River
        • Meta River
        • Tomo River
        • Tuparro River
        • Vichada River
      • Issues
      • Publications
      • About
    • Rio Grande
      • Health
      • Indicators
        • Overall Health Index
        • Annual low flow
        • Zero Flow Days
        • Municipal Water Supply
        • Groundwater
        • Agriculture surface water supply
        • Flow Alteration
        • Riparian Areas
        • Water Supply for Compact
        • Impaired Streams
        • Invasive Trees and Shrubs
        • Wetland Loss
        • Bird Diversity
        • Silvery Minnow
        • Native Fish Diversity
        • All Fish Diversity
        • Native peoples and acequias support
        • Native peoples and acequias representation
        • Water Resource Governance
        • Water Resource Management
        • Protected Lands
        • Fire
        • Park Visitation
        • Recreation Access
        • Cultural and Historical Places
        • Walkability
        • Heat Vulnerability Index
        • Social Vulnerability Index
        • Air Quality
        • Affordable Housing
      • Regions
        • Overall
        • Upper Rio Grande - CO
        • Upper Rio Grande - NM
        • Middle Rio Grande
        • Lower Rio Grande
      • Issues
      • Publications
      • About
    • River Raisin
      • Health
      • Indicators
        • Overall Health Index
        • Household Income
        • Local Ownership
        • Cost of Flooding
        • Income Equality
        • Trade
        • River Economy
        • Wetlands
        • Tree Cover
        • Forests
        • Fish Populations
        • Bird Diversity
        • Benthic Community
        • Protected Lands
        • Fish Consumption
        • Bacteria
        • Heat Vulnerability
        • Air Quality Index
        • Environmental Justice
        • Flooding
        • Sewer Overflows
        • Impervious Surfaces
        • Farmland
        • Affordable Housing
        • Walkability
        • Parks
        • Beach Access
        • Watercraft Access
        • Fishing
        • Nitrogen
        • Phosphorus
        • Dissolved Oxygen
        • Water Temperature
        • Turbidity
      • Region
        • River Raisin
      • Issues
      • Publications
      • About
    • Rouge River
      • Health
      • Indicators
        • Overall Health Index
        • Household Income
        • Local Ownership
        • Cost of Flooding
        • Income Equality
        • Trade
        • River Economy
        • Wetlands
        • Tree Cover
        • Forests
        • Fish Populations
        • Bird Diversity
        • Benthic Community
        • Protected Lands
        • Fish Consumption
        • Bacteria
        • Heat Vulnerability
        • Air Quality Index
        • Environmental Justice
        • Flooding
        • Sewer Overflows
        • Impervious Surfaces
        • Farmland
        • Affordable Housing
        • Walkability
        • Parks
        • Beach Access
        • Watercraft Access
        • Fishing
        • Nitrogen
        • Phosphorus
        • Dissolved Oxygen
        • Water Temperature
        • Turbidity
      • Region
        • Rouge River
      • Issues
      • Publications
      • About
    • Southeast Michigan
      • Health
      • Indicators
        • Overall Health Index
        • Household Income
        • Local Ownership
        • Cost of Flooding
        • Income Equality
        • Trade
        • River Economy
        • Wetlands
        • Tree Cover
        • Forests
        • Fish Populations
        • Bird Diversity
        • Benthic Community
        • Protected Lands
        • Fish Consumption
        • Bacteria
        • Heat Vulnerability
        • Air Quality Index
        • Environmental Justice
        • Flooding
        • Sewer Overflows
        • Impervious Surfaces
        • Farmland
        • Affordable Housing
        • Walkability
        • Parks
        • Beach Access
        • Watercraft Access
        • Fishing
        • Nitrogen
        • Phosphorus
        • Dissolved Oxygen
        • Water Temperature
        • Turbidity
      • Regions
        • Overall
        • Clinton
        • Detroit
        • Huron
        • Raisin
        • Rouge
      • Issues
      • Publications
      • About
    • Sudbury, Assabet, & Concord Rivers
      • Health
      • Indicators
        • Overall
        • Dissolved Oxygen
        • Temperature
        • Suspended Solids
        • Phosphorus
        • Nitrogen
        • Floating Biomass
        • Streamflow Alteration
        • Groundwater Level
        • Summer Streamflow
        • Visual Quality
        • Cultural Importance
        • Impervious Cover
        • Aquatic Connectivity
        • Ecological Integrity
        • Passability
        • Access
        • Trails
        • Bacteria
        • Fish Edibility
      • Regions
        • Upper Sudbury River
        • Lower Sudbury River
        • Upper Assabet River
        • Lower Assabet River
        • Upper Concord River
        • Lower Concord River
      • Issues
      • Publications
      • Take Action
        • Discover your rivers
        • Roll up your sleeves
        • Become a citizen scientist or advocate
        • Celebrate success
      • About
    • Verde River
      • Health
      • Indicators
        • Overall Health Index
        • Base Flow
        • Surfacewater BMPs
        • Groundwater BMPs
        • Water Quality Index
        • Water Quality Certainty
        • Turbidity
        • Macroinvertebrates
        • Upland Condition Index
        • Riparian Birds
        • Fish
        • Recreation Planning
        • Visitor Satisfaction
        • Recreation Access
        • Civic Engagement
        • Digital Engagement
        • Healthcare
        • Education
        • Unemployment
        • Affordable Housing
      • Regions
        • Overall
        • Big and Little Chino
        • Upper Verde
        • Upper Verde Valley
        • Oak Creek
        • Lower Verde Valley
        • Wild and Scenic
        • Lower Verde
      • Issues
      • Publications
      • Take Action
      • About
    • Willamette River
      • Health
      • Indicators
        • Overall Health Index
        • Water Quality Index
        • Toxics
        • Temperature
        • Native Fish
        • Non-native Fish
        • Juvenile Chinook
        • Bald Eagle
        • Channel Complexity
        • Floodplain Forest
        • Flow Targets
        • Peak Flows
        • Fish Consumption Advisories
        • Tribal Fisheries
        • Fecal Bacteria
        • Harmful Algal Blooms
      • Regions
        • Upper Willamette
        • Middle Willamette
        • Lower Willamette
      • Issues
      • Publications
      • Take Action
        • Know your river
        • Make a change
        • Join the movement
        • Celebrate success
      • About