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 tracking nutrient and sediment sources, the impacts of management practices, and the integration of geospatial, monitored, and modeled data to inform water resource management.
Professional Experience
Physical Scientist - USGS MD-DE-DC Water Science Center, Catonsville, MD: 2008-present
Education and Certifications
M.P.S. Geographic Information Systems, University of Maryland, Baltimore County
B.S. Geography and Environmental Systems, University of Maryland, Baltimore County
Science and Products
Filter Total Items: 22
Implementation of conservation tillage and cover crops in the Chesapeake Bay watershed, 1985 to 2012 Implementation of conservation tillage and cover crops in the Chesapeake Bay watershed, 1985 to 2012
Conservation tillage practices and cover crops are used throughout the Chesapeake Bay watershed to reduce soil loss and improve water quality. Implementation of these Best Management Practices (BMPs) were reported to the Chesapeake Bay Program (CBP) by each state in the watershed (New York, Pennsylvania, Maryland, Delaware, West Virginia, and Virginia). Estimates of acres of...
itrogen and phosphorus from fertilizer and manure in the Chesapeake Bay watershed, 1950-2012 itrogen and phosphorus from fertilizer and manure in the Chesapeake Bay watershed, 1950-2012
This dataset contains four tables of estimates of the yearly sum of nitrogen and phosphorus inputs from fertilizer applications and from manure applications in selected watersheds in Chesapeake Bay drainage basin from 1950 to 2012. For the fertilizer data, county-level loads were used from three published sources. Data from 1950 to 1985 are from Alexander and Smith (1990). Data for the...
Animal Best Management Practice by Chesapeake Bay Watershed Region From 1985 to 2014 Animal Best Management Practice by Chesapeake Bay Watershed Region From 1985 to 2014
This metadata record covers 18 comma delimited files that support the USGS Scientific Investigations Report Manure and Fertilizer Inputs to Land in the Chesapeake Bay Watershed, 1950-2014 by Jennifer Keisman, Olivia Devereux, Andrew LaMotte, and Andrew Sekellick. The data were created by running scenarios through the Chesapeake Bay Program Partnership Phase 5.3.2 Watershed Model for...
Ancillary Data Related to Nutrients in the Chesapeake BayData Supporting Structural Equation Modeling of Nutrient Loads Ancillary Data Related to Nutrients in the Chesapeake BayData Supporting Structural Equation Modeling of Nutrient Loads
This data release provides total nitrogen (TN) and total phosphorus (TP) annual loads for sites within the Chesapeake Bay, as well as ancillary data that describe potential nutrient sources and processes. The purpose of the study for which these data were developed is to test causal hypotheses, using structural equation models, related to the drivers of TN and TP load in the Chesapeake...
Filter Total Items: 17
Science and Products
Filter Total Items: 22
Implementation of conservation tillage and cover crops in the Chesapeake Bay watershed, 1985 to 2012 Implementation of conservation tillage and cover crops in the Chesapeake Bay watershed, 1985 to 2012
Conservation tillage practices and cover crops are used throughout the Chesapeake Bay watershed to reduce soil loss and improve water quality. Implementation of these Best Management Practices (BMPs) were reported to the Chesapeake Bay Program (CBP) by each state in the watershed (New York, Pennsylvania, Maryland, Delaware, West Virginia, and Virginia). Estimates of acres of...
itrogen and phosphorus from fertilizer and manure in the Chesapeake Bay watershed, 1950-2012 itrogen and phosphorus from fertilizer and manure in the Chesapeake Bay watershed, 1950-2012
This dataset contains four tables of estimates of the yearly sum of nitrogen and phosphorus inputs from fertilizer applications and from manure applications in selected watersheds in Chesapeake Bay drainage basin from 1950 to 2012. For the fertilizer data, county-level loads were used from three published sources. Data from 1950 to 1985 are from Alexander and Smith (1990). Data for the...
Animal Best Management Practice by Chesapeake Bay Watershed Region From 1985 to 2014 Animal Best Management Practice by Chesapeake Bay Watershed Region From 1985 to 2014
This metadata record covers 18 comma delimited files that support the USGS Scientific Investigations Report Manure and Fertilizer Inputs to Land in the Chesapeake Bay Watershed, 1950-2014 by Jennifer Keisman, Olivia Devereux, Andrew LaMotte, and Andrew Sekellick. The data were created by running scenarios through the Chesapeake Bay Program Partnership Phase 5.3.2 Watershed Model for...
Ancillary Data Related to Nutrients in the Chesapeake BayData Supporting Structural Equation Modeling of Nutrient Loads Ancillary Data Related to Nutrients in the Chesapeake BayData Supporting Structural Equation Modeling of Nutrient Loads
This data release provides total nitrogen (TN) and total phosphorus (TP) annual loads for sites within the Chesapeake Bay, as well as ancillary data that describe potential nutrient sources and processes. The purpose of the study for which these data were developed is to test causal hypotheses, using structural equation models, related to the drivers of TN and TP load in the Chesapeake...
Filter Total Items: 17