Filters: Tags: Aquia aquifer (X) > partyWithName: U.S. Geological Survey (X)

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Digital elevations and extents of regional hydrogeologic units in the Northern Atlantic Coastal Plain aquifer system A digital model of the sedimentary Northern Atlantic Coastal Plain aquifer system is composed of 20 rasters and hydrogeologic unit extent polygons. Rasters describe the top elevations of regional aquifers and confining units at a resolution of 2640 feet (1/2 mile). The rasters are clipped to the extent polygons, which represent the spatial extents of the hydrogeologic units onshore and several miles offshore. This three-dimensional hydrogeologic model was constructed as part of a U.S. Geological Survey Groundwater Resources Program study of groundwater availability in the Northern Atlantic Coastal Plain (NACP) aquifer system, including parts of New York, New Jersey, Delaware, Maryland, Virginia, and North Carolina.... Categories: Data, Data Release - Revised; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Aquia aquifer, Delaware, Delmarva Peninsula, Eastern Shore, Fall Line, All tags... Fall Zone, Groundwater and Streamflow Information Program, Hydrogeology, Lower Chesapeake aquifer, Magothy aquifer, Maryland, Matawan aquifer, Monmouth-Mount Laurel aquifer, New Jersey, New York, North Carolina, Northern Atlantic Coastal Plain, Northern Atlantic Coastal Plain aquifer system, Piney Point aquifer, Potomac-Patapsco aquifer, Potomac-Patuxent aquifer, USGS Science Data Catalog (SDC), Upper Chesapeake aquifer, Virginia, confined, elevations, heterogeneous, hydrogeologic framework, hydrogeologic units, inlandWaters, surficial aquifer, unconfined, unconsolidated, Fewer tags MODFLOW-2005 and MODPATH6 models used to simulate groundwater flow and transport and base-flow age in two tributaries to the Upper Chester River, Maryland A steady state three-dimensional groundwater flow (MODFLOW-2005) and advective transport (MODPATH6) model was developed to examine subsurface travel times to wells and receiving streams in two subcatchments contributing to the Upper Chester River, Maryland. The model was calibrated to conditions from 1990 to 2005, the period for which groundwater levels, stream discharge measurements, and atmospheric tracer measurements were jointly available. Six calibrated model scenarios were generated and paired with First Order Second Moment (FOSM) linear uncertainty analysis tools to evaluate (i) the uncertainty of base-flow age estimates as well as (ii) the worth of future data collection. The development of the model input... Tags: Aquia aquifer, Chester River, Groundwater, Groundwater Model, InlandWaters, All tags... Kent County, MODFLOW2005, MODPATH6, Maryland, NSDI, Transport Model, USGS Science Data Catalog (SDC), environment, geoscientificInformation, inlandWaters, usgsgroundwatermodel, Fewer tags MODFLOW2000 and MODFLOW-ASP models used to simulate the groundwater flow in the Atlantic Coastal Plain, North and South Carolina and parts of Georgia and Virginia, Predevelopment to 2004 A three-dimensional groundwater flow model (MODFLOW2000) of the Atlantic Coastal Plain aquifers and confining units was developed to evaluate groundwater availability and to forecast the potential effects of climate change on groundwater levels in the study area. Two existing groundwater flow models that simulated flow and water use in the Coastal Plain aquifers of North Carolina (NC), South Carolina (SC), and parts of Georgia and Virginia, were combined and updated to provide a single model. Revisions to the model incorporated additional hydrogeologic, geologic, water-level, and water-use data and hydrogeologic inconsistencies at the NC-SC border reconciled since the development of the previous models. The new... Tags: Aquia aquifer, Atlantic Coastal Plain, Beaufort aquifer, Beaufort confining unit, Black Creek aquifer, All tags... Black Creek confining unit, Calvert confining unit, Castle Hayne aquifer, Castle Hayne confining unit, Charleston aquifer, Charleston confining unit, Crouch Branch aquifer, Crouch Branch confining unit, Georgia, Gordon aquifer, Gordon confining unit, Gramling aquifer, Gramling confining unit, Groundwater, Groundwater Model, InlandWaters, Lower Cape Fear aquifer, Lower Cape Fear confining unit, Lower Dublin aquifer, Lower Dublin confining unit, Lower Midville aquifer, Lower Midville confining unit, MODFLOW, MODFLOW-ASP, MODFLOW2000, McQueen Branch aquifer, McQueen Branch confining unit, Middle Floridan confining unit, Millers Pond aquifer, Millers Pond confining unit, NSDI, Nanjemoy-Marlboro confining unit, North Carolina, Peedee aquifer, Peedee confining unit, Piney Point aquifer, Potomac confining unit, Pungo River aquifer, Pungo River confining unit, Saint Mary's aquifer, Saint Mary's confining unit, South Carolina, Surficial, USGS Science Data Catalog (SDC), Upper Cape Fear aquifer, Upper Cape Fear confining unit, Upper Dublin aquifer, Upper Dublin confining unit, Upper Floridan aquifer, Upper Floridan confining unit, Upper Midville aquifer, Upper Midville confining unit, Upper Three Runs aquifer, Virginia, Virginia Beach aquifer, Virginia Beach confining unit, Yorktown aquifer, Yorktown confining unit, environment, geoscientificInformation, inlandWaters, usgsgroundwatermodel, Fewer tags MODFLOW-2005 and MODPATH6 models used to simulate groundwater flow and nitrate transport in two tributaries to the Upper Chester River, Maryland A previously developed steady state three-dimensional groundwater flow (MODFLOW-2005) and advective transport (MODPATH6) model was used to examine subsurface nitrate transport to wells and receiving streams in two subcatchments contributing to the Upper Chester River, Maryland. Multiple scenarios of flow and transport parameter fields (recharge, hydraulic conductivity, and porosity) were previously calibrated against groundwater levels, stream discharge measurements, and atmospheric tracer measurements, as described in https://doi.org/10.1016/j.jhydrol.2018.02.006; those multiple scenarios are also available as a USGS data release (https://doi.org/10.5066/F7SN087R). Two of the flow and transport scenarios calibrated... Tags: Aquia aquifer, Chester River, Groundwater, Groundwater Model, InlandWaters, All tags... Kent County, MODFLOW2005, MODPATH6, Maryland, NSDI, Transport Model, USGS Science Data Catalog (SDC), environment, geoscientificInformation, inlandWaters, usgsgroundwatermodel, Fewer tags Digital elevations and extents of regional hydrogeologic units in the Northern Atlantic Coastal Plain aquifer system A digital model of the sedimentary Northern Atlantic Coastal Plain aquifer system is composed of 20 rasters and hydrogeologic unit extent polygons. Rasters describe the top elevations of regional aquifers and confining units at a resolution of 2640 feet (1/2 mile). The rasters are clipped to the extent polygons, which represent the spatial extents of the hydrogeologic units onshore and several miles offshore. This three-dimensional hydrogeologic model was constructed as part of a U.S. Geological Survey Groundwater Resources Program study of groundwater availability in the Northern Atlantic Coastal Plain (NACP) aquifer system, including parts of New York, New Jersey, Delaware, Maryland, Virginia, and North Carolina.... Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Aquia aquifer, Delaware, Delmarva Peninsula, Eastern Shore, Fall Line, All tags... Fall Zone, Lower Chesapeake aquifer, Magothy aquifer, Maryland, Matawan aquifer, Monmouth-Mount Laurel aquifer, New Jersey, New York, North Carolina, Northern Atlantic Coastal Plain, Northern Atlantic Coastal Plain aquifer system, Piney Point aquifer, Potomac-Patapsco aquifer, Potomac-Patuxent aquifer, Upper Chesapeake aquifer, Virginia, confined, elevations, heterogeneous, hydrogeologic framework, hydrogeologic units, inlandWaters, surficial aquifer, unconfined, unconsolidated, Fewer tags