groundwater

Geologic Map Day - October 16, 2015

Date

Geologic Map Day 2015, a special event designed to promote awareness of geologic mapping and its vital importance to society.

RI79 Simulation of Groundwater Flow and Contaminant Transport in Eastern Sussex County, Delaware With Emphasis on Impacts of Spray Irrigation of Treated Wastewater

This report presents a conceptual model of groundwater flow and the effects of nitrate (NO3-) loading and transport on shallow groundwater quality in a portion of the Indian River watershed, eastern Sussex County, Delaware. Three-dimensional, numerical simulations of groundwater flow, particle tracking, and contaminant transport were constructed and tested against data collected in previous hydrogeological and water-quality studies.

Drought Conditions Indicators for Delaware

The DGS will research past performance of the Water Conditions Index (WCI) for Northern New Castle County, as compared with other established drought indicators, and investigate modifying the WCI, if needed. We will also investigate the feasibility of quantifying water conditions in Kent and Sussex Counties by analyzing factors that are most important to these regions (i.e., precipitation, groundwater for agricultural irrigation, etc….)

New Instrumentation for Water Budget Evaluation

Date

The Delaware Environmental Observation System (DEOS) and the Delaware Geological Survey have recently acquired new instrumentation to measure evapotranspiration (ET). The purchase of an eddy covariance instrument, partially supported by the Department of Natural Resources and Environmental Control, will improve the ability to quantify ET during agricultural and water supply drought periods and improve water availability estimates for resource managers.

Application of 3-D Aquifer Mapping to Analysis of Groundwater Withdrawals by Source in the Delaware Coastal Plain

Date

Peter P. McLaughlin, Jr., Senior Scientist at the Delaware Geological Survey, gave a presentation on October 18 at the 2014 Geological Society of America Annual Meeting in Vancouver, Canada entitled "Application of 3-D Aquifer Mapping to Analysis of Groundwater Withdrawals by Source in the Delaware Coastal Plain," coauthored with Jaime L. Tomlinson and Amanda K. Lawson.