The USGS generates data and spatial information used to understand and help restore the Chesapeake Bay and its watershed. USGS Chesapeake Bay data includes research, monitoring and modeling information related to land cover and use, water quality and quantity, and biological resources and their habitats.

Some of the USGS data are also integrated with the Chesapeake Information Management System (CIMS) and the Chesapeake Bay Program "Watershed Profiles".

Data and Spatial Links

Beta version of the Chesapeake Bay Data Mapper is now available. (Intermittent down time may occur.)

USGS Spatial Data Resources

• National Geospatial Data Clearinghouse search for data
• USGS Geographic Data DLG, LULC, and more.
• USGS GEOData Elevation (NED), Hydrography (NHD), and more.
• Status of USGS Digital Cartographic Data
• The National Map

State Spatial Data Resources

• DC Geographic Information Systems
• Delaware DataMIL
• MSGIC -Maryland State Geographic Information Committee
• New York State Data Clearinghouse
• PASDA -Pennsylvania State Data Access
• VGIN -Virginia Geographic Information Network
• West Virginia DEP Geographical Server

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Impact of Human Activities on Land Use

• The Bay Watershed Satellite Map
• MRLC NLCD National Land Cover Data, 1992 and 2001
• 1997 Land Use Land Cover
• Land Cover Mapping of the Chesapeake Bay Watershed
  Regional Earth Science Applications Center (RESAC) Land Use
  Land Cover, 2000, and Impervious Land, 1990 and 2000
• Delaware
• DC
• Maryland
• New York
• Pennsylvania
• Virginia
• West Virginia
• USGS 8 Digit Hydrologic Units
• USGS Hydrogeomorphic Regions
• National Watershed Boundary Dataset
• EPA Chesapeake Bay Program Watershed Profiles

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Water Quality and Quantity

National Water Information

• National Water-Quality Information
• Obtaining USGS Water-Resources Data

Monitoring

• Chesapeake Bay River Input Monitoring Program RIMP
• Nontidal Surface-Water Quality Data Base
• Non-tidal Monitoring Program Maps

Nutrients

• Relating Nutrient Sources to Water Quality (SPARROW Applications)
• Source Data and Model Estimates, Late 1980s
• Source Data and Model Estimates, Early 1990s
• Source Data and Model Estimates, Late 1990s
• TRENDS

Sediments

• Atlantic Estuaries: Chesapeake Bay
• Distribution of Holocene Sediment in Chesapeake Bay
• Surficial Sediment Distribution of Chesapeake Bay, Maryland
• TRENDS
• USGS Suspended-sediment database

Contaminants

• NADP/NTN data
• Contaminant Exposure and Effects - Terrestrial Vertebrates (CEE-TV) Database

Stream Flow and Ground-Water Quantity

• Monthly Water Conditions in the Chesapeake Bay Region
• TRENDS in Streamflow

Historical listing of USGS information from the Potomac Estuary Study

• Potomac Estuary Study Bibliography - through 1996

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Ability of Habitat to Support Fish and Bird Populations

• Habitat Vulnerability
• Ecological Research on Wetlands and Submerged Aquatic Vegetation
• SAV Bay grasses in the Chesapeake Bay
• NBII National Biological Information Infrastructure
• Contaminant Exposure and Effects - Terrestrial Vertebrates (CEE-TV) Database