Andrew Sekellick
Andrew has worked for the USGS since 2008, providing GIS, cartographic, and statistical support to a wide variety of projects. Experience and interests include GW modeling, watershed level sediment studies, and QW modeling.
Current work focuses the effects of BMPs in the Chesapeake Bay and predicting water quality in baseflow and total flow using time sensitive modeling techniques.
Science and Products
New study evaluates effects of agricultural conservation practices on nitrogen in streams of the Chesapeake Bay
Issue: Adaptive management in support of Chesapeake Bay restoration is complicated by uncertainty about the effects of agricultural management practices on water quality. Despite increasing investment, effects of agricultural conservation practices on regional water quality remain difficult to quantify due to factors such as groundwater travel times, varying modes-of-action, and the general lack...
GIS & Dataset Capabilities @ MD-DE-DC
Spatial analysts at the MD-DE-DC WSC use Geographic Information Systems to interpret data collected through field reconnaissance and downloaded from internal USGS, other federal, state, and local agencies, academic institutions, industry, and other professional contracting organizations. GIS is used to analyze the data using shapefiles and geodatabased information to help prove or disprove...
Modeling Capabilities @ MD-DE-DC
USGS models are widely used to predict responses of hydrologic systems to changing stresses, such as increases in precipitation or ground-water pumping rates, as well as to predict the fate and movement of solutes and contaminants in water. The USGS is at the forefront of devising new techniques and computer software to solve practical problems in the study of water resources. Predictive models...
Science and Products
New study evaluates effects of agricultural conservation practices on nitrogen in streams of the Chesapeake Bay
Issue: Adaptive management in support of Chesapeake Bay restoration is complicated by uncertainty about the effects of agricultural management practices on water quality. Despite increasing investment, effects of agricultural conservation practices on regional water quality remain difficult to quantify due to factors such as groundwater travel times, varying modes-of-action, and the general lack...
GIS & Dataset Capabilities @ MD-DE-DC
Spatial analysts at the MD-DE-DC WSC use Geographic Information Systems to interpret data collected through field reconnaissance and downloaded from internal USGS, other federal, state, and local agencies, academic institutions, industry, and other professional contracting organizations. GIS is used to analyze the data using shapefiles and geodatabased information to help prove or disprove...
Modeling Capabilities @ MD-DE-DC
USGS models are widely used to predict responses of hydrologic systems to changing stresses, such as increases in precipitation or ground-water pumping rates, as well as to predict the fate and movement of solutes and contaminants in water. The USGS is at the forefront of devising new techniques and computer software to solve practical problems in the study of water resources. Predictive models...