Inventory of well-construction data, water-quality and quality control data, statistical data, and geochemical modeling data for wells in Atlantic and Gulf Coastal Plain aquifers, eastern United States, 2012 and 2013

This dataset provides analytical and other data in support of an analysis of lead and manganese in untreated drinking water from Atlantic and Gulf Coastal Plain aquifers, eastern United States. The occurrence of dissolved lead and manganese in sampled groundwater, prior to its distribution or treatment, is related to the potential presence of source minerals and specific environmental factors including hydrologic position along the flow path, water-rock interactions, and associated geochemical conditions such as pH and dissolved oxygen (DO) concentrations. A DO/pH framework is proposed as a screening tool for evaluating risk of elevated lead or manganese, based on the occurrence of elevated lead and manganese concentrations...

Categories: Data; Tags: Adsorption, Alabama, Coastal Plain aquifer, Cycle 3, Delaware, All tags... Dissolved oxygen, Drinking water, Florida, Geochemical modeling, Georgia, Groundwater quality, Kentucky, Lead, Louisiana, Manganese, Maryland, Minerals, Mississippi, NAWQA, New Jersey, New York, North Atlantic Coastal Plain, North Carolina, Pennsylvania, Redox, South Carolina, Southeastern Coastal Plain, Tennessee, Texas, USGS Science Data Catalog (SDC), Virginia, Water quality, pH, Fewer tags

Thickness of the Surficial Aquifer, Delmarva Peninsula, Maryland and Delaware

A digital map of the thickness of the surficial unconfined aquifer, including from the land surface and unsaturated zone to the bottom of sediments of geologic units identified as part of the surficial aquifer, was produced to improve understanding of the hydrologic system in the Maryland and Delaware portions of the Delmarva Peninsula. The map is intended to be used in conjunction with other environmental coverages (such land use, wetlands, and soil characteristics) to provide a subsurface hydrogeologic component to studies of nitrate transport that have historically relied on maps of surficial features. It could also be used to study the transport of other water soluble chemicals. The map was made using the...

Types: Citation; Tags: Aquifer Thickness, Coastal Plain, Coastal Plain Aquifer, Delaware, Groundwater, All tags... Maryland, Northern Atlantic Coastal Plain, Quaternary Sediments, Raster Dataset, USGS Science Data Catalog (SDC), United States, Water Quality, Water Quality, environment, geoscientificInformation, inlandWaters, Fewer tags