EPA Environmental Dataset Gateway


Open/Close section Identification Information
Title: Great Lakes Environmental Database (GLENDA)
Abstract: The Great Lakes Environmental Database (GLENDA) houses environmental data collected by EPA Great Lakes National Program Office (GLNPO) programs that sample water, aquatic life, sediments, and air to assess the health of the Great Lakes ecosystem. GLENDA is available to the public on the EPA Central Data Exchange (CDX). A CDX account is required, which anyone may create. GLENDA offers “Ready to Download Data Files” prepared by GLNPO or a “Query Data” interface that allows users to select from predefined parameters to create a customized query. Query results can be downloaded in .csv format. GLNPO programs providing data in GLENDA include the Great Lakes Water Quality Survey and Great Lakes Biology Monitoring Program (1983-present, biannual monitoring throughout the Great Lakes to assess water quality, chemical, nutrient, and physical parameters, and biota such as plankton and benthic invertebrates), the Great Lakes Fish Monitoring and Surveillance Program (1977-present, annual analysis of top predator fish composites to assess historic and emerging persistent, bioaccumulative, or toxic chemical contaminants), the Cooperative Science and Monitoring Initiative (2002-present, intensive water quality and biology sampling of one lake per year focusing on key challenges and data gaps), the Great Lakes Integrated Atmospheric Deposition Network (1990-present, monitoring Great Lakes air and precipitation for persistent toxic chemicals), the Lake Michigan Mass Balance Study (1993-1996, analyzed the atmosphere, tributaries, sediments, water column, and biota of Lake Michigan for nutrients, atrazine, PCBs, trans-nonachlor, and mercury modelling), and the Great Lakes Legacy Act (1996-present, evaluations of sediment contamination in Areas of Concern). GLENDA is updated frequently with new data.
File Identifier: C07E58C3-634A-4F65-98AC-8100A3E1455A
Open/Close section Distribution Information
Distribution Title Central Data Exchange (CDX)
Access URL https://cdx.epa.gov
Open/Close section Constraints
Access Level: Public
License: https://edg.epa.gov/EPA_Data_License.html
Open/Close section Metadata Dates
Date Modified: 2019-09-20
Date Issued: 2019-09-20
Temporal 1977
Accrual Periodicity irregular
Open/Close section Contact Information
Organization: U.S. Environmental Protection Agency, Region 5
Contact Person: Kenneth Klewin, U.S. Environmental Protection Agency, Region 5
Email: Klewin.Kenneth@epa.gov
Open/Close section Spatial Domain
Zoom to the metadata envelope
Open/Close section Metadata Reference Information
Landing Page https://www.epa.gov/great-lakes-monitoring
Related Documents: https://www.epa.gov/great-lakes-monitoring/water-chemistry, https://www.epa.gov/great-lakes-legacy-act, https://www.epa.gov/greatlakes/lake-michigan-mass-balance-results-and-publications
Metadata Language: English