Mercury Source Identification in the Mobile and Tombigbee Rivers
type: Dataset
description: This dataset details mercury concentrations and mercury stable isotope values collected as part of an environmental mercury assessment encompassing the Mobile and Tombigbee Rivers as well as two U.S. Environmental Protection Agency Superfund sites. The Tensaw River was also sampled as part of this study as a reference site, absent of mercury contamination. As a part of this survey, sediments, waters, and biota (largemouth bass) were measured to assess mercury transport and bioaccumulation of mercury within the Mobile River Basin. High mercury concentrations and isotope values indicative of industrial contamination were found in sediments and fish of Superfund sites. Lower concentrations and isotope values indicative of deposition were found within the Tensaw River and main branches of the Mobile and Tombigbee Rivers.
issued: 2025-11-22T03:29:39.850319
modified: 20211008
spatial: Location
contact point: Organization
  fn: Sarah E Janssen
keyword: alabama
keyword: amerigeo
keyword: amerigeoss
keyword: bioaccumulation
keyword: ckan
keyword: geo
keyword: geoss
keyword: industrial-pollution
keyword: isotopic-analysis
keyword: mercury
keyword: mobile-river
keyword: national
keyword: north-america
keyword: tensaw-river
keyword: tombigbee-river
keyword: united-states
keyword: usgs-60bfb0ebd34e86b938916ac2
theme: {geospatial}

Digital Data
type: Distribution
description: Landing page for access to the data
format: XML
issued: 2022-08-06T19:02:50.914323
modified: 2025-11-22T03:29:39.840517
access URL: https://doi.org/10.5066/P9S30YH9
media type: application/http

Original Metadata
type: Distribution
description: The metadata original format
format: XML
issued: 2022-08-06T19:02:50.914317
modified: 2025-11-22T03:29:39.840096
access URL: https://data.usgs.gov/datacatalog/metadata/USGS.60bfb0ebd34e86b938916ac2.xml
media type: text/xml

US Migrating
type: Agent