2023 Early Hearing Detection & Intervention Conference

March 5-7, 2023 • Cincinnati, OH

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5/21/2018 | 12:00 PM - 12:15 PM | GROUNDWATER AS A SOURCE OF EMERGING CONTAMINANTS TO STREAMS OF THE CHESAPEAKE BAY WATERSHED | 410 B

GROUNDWATER AS A SOURCE OF EMERGING CONTAMINANTS TO STREAMS OF THE CHESAPEAKE BAY WATERSHED

Groundwater upwelling zones can serve as important niche environments for aquatic organisms. The use of upwelling areas for thermal refuge or spawning by fish, amphibians, and benthic invertebrates renders these organisms susceptible to focused discharge of groundwater contamination. However, there is a paucity of information on the potential for groundwater in streams as an exposure pathway of emerging contaminants for aquatic organisms. Ongoing research in the Chesapeake Bay Watershed - where surface water and adult/young-of-year smallmouth bass are sampled for contaminants – motivated this investigation on the role of groundwater as a source of contaminants in areas of known smallmouth bass spawning and rearing activity. Using thermal infrared cameras to locate areas of groundwater upwelling, we sampled groundwater using drive-point piezometers at three locations: two in the Susquehanna River Basin and one in West Virginia. Samples of shallow ground and surface water were collected monthly through September 2017. Total estrogenicity was quantified for all samples and a subset was selected for analysis of pesticide degradates, hormones and phytoestrogens. Preliminary analyses suggest that focused groundwater discharges may be an important exposure pathway for smallmouth bass and other aquatic organisms.

Hydrology
Water Quality
Non-point Source

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Presenters/Authors

Tyler Thompson (), Pennsylvania State University, tjt5199@psu.edu;