groundwater monitoring

DGS and DEOS add new on-line groundwater level station


DGS and DEOS are pleased to announce that near real-time groundwater level data from well Oh25-09 have recently been made available on the DEOS web site through the Harbeson, DE-REC station found on the Current Conditions link (http://

Groundwater response to extreme rainfall event – eastern Sussex County


During an extreme rainfall event that occurred September 29-30, 2016, more than 12 inches in one day, caused the water table to rise over 5 feet near Harbeson, Delaware. A subsequent 3.6 inch storm on October 8 - 9 caused the water table to rise above land surface and flood the area for nearly 8 hours.

Delaware Geological Survey issues report on groundwater modeling in eastern Sussex County


The Delaware Geological Survey (DGS) has released a new technical report titled Simulation of Groundwater Flow and Contaminant Transport in Eastern Sussex County, Delaware with Emphasis on Impacts of Spray Irrigation of Treated Wastewater, which was prepared by Changming He and A. Scott Andres of DGS.

DGS Report of Investigations No. 79 documents development of a detailed study of subsurface hydrogeology, interactions between aquifers and streams, and the effects of spray irrigation of treated wastewater on groundwater beneath southern eastern Sussex County.