Estrogen Equivalents of Surface Water in the Upper Chesapeake Bay Watershed (2008 - 2011)

Intersex in small- and largemouth bass has been observed in the upper Chesapeake Bay Watershed since 2003. This observation is indicative of exposure to estrogenic endocrine disrupting chemicals. In order to complement biological data sets and better identify the spatial and temporal nature of this end-point, discrete grab water samples were collected throughout the upper Chesapeake Bay Watershed for the evaluation of estrogenic activity. Data reported here are estrogenicity values derived from bioassay screening of OASIS-HLB extracts discrete grab water samples. Estrogenicity was determined using a bioluminescent yeast estrogen screen. Here we report estrogenicity data for selected sites in the Chesapeake Bay water shed collected between 2008 and 2011.

Data and Resources

Field Value
accessLevel public
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identifier USGS:59bfc56de4b091459a5e08ad
metadata_type geospatial
modified 20200821
old-spatial -80.870361328491, 35.844179836953, -74.080810547512, 41.631540386467
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
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theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • bioassay
  • ckan
  • environmental-health
  • estrogenicity
  • field-monitoring-stations
  • field-sampling
  • geo
  • geoss
  • maryland
  • national
  • north-america
  • pennsylvania
  • united-states
  • usgs-59bfc56de4b091459a5e08ad
  • virginia
  • west-virginia
isopen False
license_id notspecified
license_title License not specified
maintainer Luke R. Iwanowicz
maintainer_email liwanowicz@usgs.gov
metadata_created 2025-11-20T14:34:38.243282
metadata_modified 2025-11-20T14:34:38.243286
notes Intersex in small- and largemouth bass has been observed in the upper Chesapeake Bay Watershed since 2003. This observation is indicative of exposure to estrogenic endocrine disrupting chemicals. In order to complement biological data sets and better identify the spatial and temporal nature of this end-point, discrete grab water samples were collected throughout the upper Chesapeake Bay Watershed for the evaluation of estrogenic activity. Data reported here are estrogenicity values derived from bioassay screening of OASIS-HLB extracts discrete grab water samples. Estrogenicity was determined using a bioluminescent yeast estrogen screen. Here we report estrogenicity data for selected sites in the Chesapeake Bay water shed collected between 2008 and 2011.
num_resources 2
num_tags 18
title Estrogen Equivalents of Surface Water in the Upper Chesapeake Bay Watershed (2008 - 2011)