coastal flooding

John Callahan gave a presentation at AMS 2021


On Jan. 13, 2021, John Callahan, associate scientist at the Delaware Geological Survey, presented at the 101st American Meteorological Society (AMS) 2021 annual meeting, the world’s largest yearly gathering for the weather, water and climate community.

John Callahan selected to the DRBC Advisory Committee on Climate Change


DGS scientist John Callahan was selected as a member of the Delaware River Basin Commission (DRBC) Advisory Committee on Climate Change (ACCC).  John was selected as one of nine non-reserve members, to serve along with nine reserve members, to make up the 18-member committee.

Morphology and Tidal Inundation of Tidal Wetlands in the Delaware Estuary

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An expanse of tidal wetlands fringes the Delaware Estuary and provides Delaware, Pennsylvania, and New Jersey with abundant ecosystem services including habitat for indigenous and migrating plants and wildlife, biogeochemical cycling of nutrients, preserving water quality, flood hazard mitigation