Christopher P. Garrity
Christopher Garrity is a Supervisory Cartographer with the USGS Geology, Energy & Minerals (GEM) Science Center in Reston, VA. He is responsible for developing scalable, resilient, enterprise-level geospatial web applications and product/data delivery systems for a variety of groups at the USGS.
Chris has an extensive background in geospatial related technologies, specializing in the planning, architecture, development, maintenance, and support of complex geospatial driven applications for USGS stakeholders. Since joining the USGS, he has led numerous high-visibility projects in the Energy/Minerals and Core Science Systems Mission areas. He is an active leader in the USGS geospatial community, especially those interested in open-source geospatial technologies, and serves on numerous USGS and industry steering committees/communities of practice. He currently leads a geospatial team in the Geology, Energy & Minerals Science Center.
Professional Experience
Lead developer of a variety of highly visible geospatial related applications in multiple languages/protocols (JavaScript, Python, NodeJS, PHP, JSON/XML, HTML5, CSS, etc.)
Extensive experience utilizing geospatial technologies including ESRI ArcGIS Enterprise, ArcGIS APls, ArcGIS Online, open-source geospatial technologies (PostGIS, GeoServer, OpenLayers, and MapBox)
Extensive knowledge of relational database managements systems such as PostgreSOL and SOL Server
Experience developing middleware and RESTful web services with respect for end user authentication
Experience leveraging contemporary technologies like Cloud, Al/ML, and 3D modeling in geospatial workflows
Experience with distributed computing frameworks for big data (Kubernetes, Dask)
Extensive knowledge of design tools (Adobe Creative Suite, Blender, Figma, Sketch, lnvision)
Experience in computer vision and machine learning toolkits/technologies (OpenCV, TensorFlow, Keras)
Experience in cloud architecture (AWS) and related technologies (RDS, SageMaker, Rekognition, Textract)
Highly proficient in testing, supporting, and developing tools/scripts, and preparing technical documentation
Extensive knowledge in data governance/management related workflows, including geospatial catalog development and curation, semantics/ontologies, data curation, metadata (ISO, FGDC, Dublin Core) management and API technologies
Education and Certifications
B.S. Earth Systems Science, GISciences, George Mason University, 2001
Science and Products
Filter Total Items: 36
The Carolina Sandhills: Quaternary eolian sand sheets and dunes along the updip margin of the Atlantic Coastal Plain province, southeastern United States The Carolina Sandhills: Quaternary eolian sand sheets and dunes along the updip margin of the Atlantic Coastal Plain province, southeastern United States
The Carolina Sandhills is a physiographic region of the Atlantic Coastal Plain province in the southeastern United States. In Chesterfield County (South Carolina), the surficial sand of this region is the Pinehurst Formation, which is interpreted as eolian sand derived from the underlying Cretaceous Middendorf Formation. This sand has yielded three clusters of optically stimulated...
Authors
Christopher S. Swezey, Bradley A. Fitzwater, G. Richard Whittecar, Shannon A. Mahan, Christopher P. Garrity, Wilma B. Aleman-Gonzalez, Kerby M. Dobbs
Onshore industrial wind turbine locations for the United States up to March 2014 Onshore industrial wind turbine locations for the United States up to March 2014
Wind energy is a rapidly growing form of renewable energy in the United States. While summary information on the total amounts of installed capacity are available by state, a free, centralized, national, turbine-level, geospatial dataset useful for scientific research, land and resource management, and other uses did not exist. Available in multiple formats and in a web application...
Authors
James E. Diffendorfer, Louisa Kramer, Zachary H. Ancona, Christopher P. Garrity
The geology of Burnsville Cove, Bath and Highland Counties, Virginia The geology of Burnsville Cove, Bath and Highland Counties, Virginia
Burnsville Cove is a karst region in Bath and Highland Counties of Virginia. A new geologic map of the area reveals various units of limestone, sandstone, and siliciclastic mudstone (shale) of Silurian through Devonian age, as well as structural features such as northeast-trending anticlines and synclines, minor thrust faults, and prominent joints. Quaternary features include erosional...
Authors
Christopher S. Swezey, John T. Haynes, Richard A. Lambert, William B. White, Philip C. Lucas, Christopher P. Garrity
Assessment of undiscovered petroleum resources of the Amerasia Basin Petroleum Province Assessment of undiscovered petroleum resources of the Amerasia Basin Petroleum Province
The Amerasia Basin Petroleum Province encompasses the Canada Basin and the sediment prisms along the Alaska and Canada margins, outboard from basinward margins (hingelines) of the rift shoulders that formed during extensional opening of the Canada Basin. The province includes the Mackenzie delta and slope, the outer shelves and marine slopes along the Arctic margins of Alaska and Canada...
Authors
David W. Houseknecht, Kenneth J. Bird, Christopher P. Garrity
Assessment of undiscovered petroleum resources of the Arctic Alaska Petroleum Province Assessment of undiscovered petroleum resources of the Arctic Alaska Petroleum Province
The Arctic Alaska Petroleum Province encompasses all lands and adjacent continental shelf areas north of the Brooks Range-Herald arch tectonic belts and south of the northern (outboard) margin of the Alaska rift shoulder. Even though only a small part is thoroughly explored, it is one of the most prolific petroleum provinces in North America, with total known resources (cumulative...
Authors
David W. Houseknecht, Kenneth J. Bird, Christopher P. Garrity
Database for USGS Map I-1970 - Map showing the thickness and character of Quaternary sediments in the glaciated United States east of the Rocky Mountains Database for USGS Map I-1970 - Map showing the thickness and character of Quaternary sediments in the glaciated United States east of the Rocky Mountains
No abstract available.
Authors
D. R. Soller, P.H. Packard, C.P. Garrity
Assessment of potential oil and gas resources in source rocks of the Alaska North Slope, 2012 Assessment of potential oil and gas resources in source rocks of the Alaska North Slope, 2012
The U.S. Geological Survey estimated potential, technically recoverable oil and gas resources for source rocks of the Alaska North Slope. Estimates (95-percent to 5-percent probability) range from zero to 2 billion barrels of oil and from zero to nearly 80 trillion cubic feet of gas.
Authors
David W. Houseknecht, William A. Rouse, Christopher P. Garrity, Katherine J. Whidden, Julie A. Dumoulin, Christopher J. Schenk, Ronald R. Charpentier, Troy A. Cook, Stephanie B. Gaswirth, Mark A. Kirschbaum, Richard M. Pollastro
Geostatistical population-mixture approach to unconventional-resource assessment with an application to the Woodford Gas Shale, Arkoma Basin, eastern Oklahoma Geostatistical population-mixture approach to unconventional-resource assessment with an application to the Woodford Gas Shale, Arkoma Basin, eastern Oklahoma
Evaluation of resources such as tight sands and gas shales requires the formulation of assessment models that are different from those used for the inference of conventional resources. Formulations in present use are based in classical statistics that ignore the partly organized and partly random geographical variation of attributes related to the occurrence of hydrocarbons. This paper...
Authors
Ricardo A. Olea, Ronald Charpentier, Troy A. Cook, David W. Houseknecht, Christopher P. Garrity
2010 Petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA): GIS play maps 2010 Petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA): GIS play maps
This report provides digital geographic information systems (GIS) files of maps for each of the 24 plays considered in the U.S. Geological Survey (USGS) 2010 updated petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA) (Houseknecht and others, 2010). These are the sample plays evaluated in a previous USGS assessment of the NPRA (Bird and Houseknecht, 2002a)...
Authors
Christopher P. Garrity, David W. Houseknecht, Kenneth J. Bird
Formulation of a correlated variables methodology for assessment of continuous gas resources with an application to the Woodford play, Arkoma Basin, eastern Oklahoma Formulation of a correlated variables methodology for assessment of continuous gas resources with an application to the Woodford play, Arkoma Basin, eastern Oklahoma
Shale gas is a form of continuous unconventional hydrocarbon accumulation whose resource estimation is unfeasible through the inference of pore volume. Under these circumstances, the usual approach is to base the assessment on well productivity through estimated ultimate recovery (EUR). Unconventional resource assessments that consider uncertainty are typically done by applying...
Authors
Ricardo A. Olea, D.W. Houseknecht, C.P. Garrity, T. A. Cook
Notes on the geology and meteorology of sites infected with white-nose syndrome before July 2010 in Southeastern United States Notes on the geology and meteorology of sites infected with white-nose syndrome before July 2010 in Southeastern United States
Since 2006, numerous bat colonies in North America have experienced unusually high incidences of mortality. In these colonies, bats are infected by a white fungus named Geomyces destructans, which has been observed on bat muzzles, noses, ears, and (or) wings. Although it is not exactly certain how and why these bats are dying, this condition has been named white-nose syndrome (WNS). WNS...
Authors
Christopher S. Swezey, Christopher P. Garrity
Geographical and geological data from caves and mines infected with white-nose syndrome (WNS) before September 2009 in the eastern United States Geographical and geological data from caves and mines infected with white-nose syndrome (WNS) before September 2009 in the eastern United States
Since 2006, a white fungus named Geomyces destructans has been observed on the muzzles, noses, ears, and (or) wings of bats in the eastern United States, and bat colonies that are infected with this fungus have experienced dramatic incidences of mortality. Although it is not exactly certain how and why these bats are dying, this condition has been named white-nose syndrome (WNS). WNS...
Authors
Christopher S. Swezey, Christopher P. Garrity
Non-USGS Publications**
Palmer, J. F., Hoen, B., & Garrity, C. (2026). An exploratory investigation of the experience of visible wind turbines. Journal of Digital Landscape Architecture, (11), Article 537770086. https://doi.org/10.14627/537770086.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 36
The Carolina Sandhills: Quaternary eolian sand sheets and dunes along the updip margin of the Atlantic Coastal Plain province, southeastern United States The Carolina Sandhills: Quaternary eolian sand sheets and dunes along the updip margin of the Atlantic Coastal Plain province, southeastern United States
The Carolina Sandhills is a physiographic region of the Atlantic Coastal Plain province in the southeastern United States. In Chesterfield County (South Carolina), the surficial sand of this region is the Pinehurst Formation, which is interpreted as eolian sand derived from the underlying Cretaceous Middendorf Formation. This sand has yielded three clusters of optically stimulated...
Authors
Christopher S. Swezey, Bradley A. Fitzwater, G. Richard Whittecar, Shannon A. Mahan, Christopher P. Garrity, Wilma B. Aleman-Gonzalez, Kerby M. Dobbs
Onshore industrial wind turbine locations for the United States up to March 2014 Onshore industrial wind turbine locations for the United States up to March 2014
Wind energy is a rapidly growing form of renewable energy in the United States. While summary information on the total amounts of installed capacity are available by state, a free, centralized, national, turbine-level, geospatial dataset useful for scientific research, land and resource management, and other uses did not exist. Available in multiple formats and in a web application...
Authors
James E. Diffendorfer, Louisa Kramer, Zachary H. Ancona, Christopher P. Garrity
The geology of Burnsville Cove, Bath and Highland Counties, Virginia The geology of Burnsville Cove, Bath and Highland Counties, Virginia
Burnsville Cove is a karst region in Bath and Highland Counties of Virginia. A new geologic map of the area reveals various units of limestone, sandstone, and siliciclastic mudstone (shale) of Silurian through Devonian age, as well as structural features such as northeast-trending anticlines and synclines, minor thrust faults, and prominent joints. Quaternary features include erosional...
Authors
Christopher S. Swezey, John T. Haynes, Richard A. Lambert, William B. White, Philip C. Lucas, Christopher P. Garrity
Assessment of undiscovered petroleum resources of the Amerasia Basin Petroleum Province Assessment of undiscovered petroleum resources of the Amerasia Basin Petroleum Province
The Amerasia Basin Petroleum Province encompasses the Canada Basin and the sediment prisms along the Alaska and Canada margins, outboard from basinward margins (hingelines) of the rift shoulders that formed during extensional opening of the Canada Basin. The province includes the Mackenzie delta and slope, the outer shelves and marine slopes along the Arctic margins of Alaska and Canada...
Authors
David W. Houseknecht, Kenneth J. Bird, Christopher P. Garrity
Assessment of undiscovered petroleum resources of the Arctic Alaska Petroleum Province Assessment of undiscovered petroleum resources of the Arctic Alaska Petroleum Province
The Arctic Alaska Petroleum Province encompasses all lands and adjacent continental shelf areas north of the Brooks Range-Herald arch tectonic belts and south of the northern (outboard) margin of the Alaska rift shoulder. Even though only a small part is thoroughly explored, it is one of the most prolific petroleum provinces in North America, with total known resources (cumulative...
Authors
David W. Houseknecht, Kenneth J. Bird, Christopher P. Garrity
Database for USGS Map I-1970 - Map showing the thickness and character of Quaternary sediments in the glaciated United States east of the Rocky Mountains Database for USGS Map I-1970 - Map showing the thickness and character of Quaternary sediments in the glaciated United States east of the Rocky Mountains
No abstract available.
Authors
D. R. Soller, P.H. Packard, C.P. Garrity
Assessment of potential oil and gas resources in source rocks of the Alaska North Slope, 2012 Assessment of potential oil and gas resources in source rocks of the Alaska North Slope, 2012
The U.S. Geological Survey estimated potential, technically recoverable oil and gas resources for source rocks of the Alaska North Slope. Estimates (95-percent to 5-percent probability) range from zero to 2 billion barrels of oil and from zero to nearly 80 trillion cubic feet of gas.
Authors
David W. Houseknecht, William A. Rouse, Christopher P. Garrity, Katherine J. Whidden, Julie A. Dumoulin, Christopher J. Schenk, Ronald R. Charpentier, Troy A. Cook, Stephanie B. Gaswirth, Mark A. Kirschbaum, Richard M. Pollastro
Geostatistical population-mixture approach to unconventional-resource assessment with an application to the Woodford Gas Shale, Arkoma Basin, eastern Oklahoma Geostatistical population-mixture approach to unconventional-resource assessment with an application to the Woodford Gas Shale, Arkoma Basin, eastern Oklahoma
Evaluation of resources such as tight sands and gas shales requires the formulation of assessment models that are different from those used for the inference of conventional resources. Formulations in present use are based in classical statistics that ignore the partly organized and partly random geographical variation of attributes related to the occurrence of hydrocarbons. This paper...
Authors
Ricardo A. Olea, Ronald Charpentier, Troy A. Cook, David W. Houseknecht, Christopher P. Garrity
2010 Petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA): GIS play maps 2010 Petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA): GIS play maps
This report provides digital geographic information systems (GIS) files of maps for each of the 24 plays considered in the U.S. Geological Survey (USGS) 2010 updated petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA) (Houseknecht and others, 2010). These are the sample plays evaluated in a previous USGS assessment of the NPRA (Bird and Houseknecht, 2002a)...
Authors
Christopher P. Garrity, David W. Houseknecht, Kenneth J. Bird
Formulation of a correlated variables methodology for assessment of continuous gas resources with an application to the Woodford play, Arkoma Basin, eastern Oklahoma Formulation of a correlated variables methodology for assessment of continuous gas resources with an application to the Woodford play, Arkoma Basin, eastern Oklahoma
Shale gas is a form of continuous unconventional hydrocarbon accumulation whose resource estimation is unfeasible through the inference of pore volume. Under these circumstances, the usual approach is to base the assessment on well productivity through estimated ultimate recovery (EUR). Unconventional resource assessments that consider uncertainty are typically done by applying...
Authors
Ricardo A. Olea, D.W. Houseknecht, C.P. Garrity, T. A. Cook
Notes on the geology and meteorology of sites infected with white-nose syndrome before July 2010 in Southeastern United States Notes on the geology and meteorology of sites infected with white-nose syndrome before July 2010 in Southeastern United States
Since 2006, numerous bat colonies in North America have experienced unusually high incidences of mortality. In these colonies, bats are infected by a white fungus named Geomyces destructans, which has been observed on bat muzzles, noses, ears, and (or) wings. Although it is not exactly certain how and why these bats are dying, this condition has been named white-nose syndrome (WNS). WNS...
Authors
Christopher S. Swezey, Christopher P. Garrity
Geographical and geological data from caves and mines infected with white-nose syndrome (WNS) before September 2009 in the eastern United States Geographical and geological data from caves and mines infected with white-nose syndrome (WNS) before September 2009 in the eastern United States
Since 2006, a white fungus named Geomyces destructans has been observed on the muzzles, noses, ears, and (or) wings of bats in the eastern United States, and bat colonies that are infected with this fungus have experienced dramatic incidences of mortality. Although it is not exactly certain how and why these bats are dying, this condition has been named white-nose syndrome (WNS). WNS...
Authors
Christopher S. Swezey, Christopher P. Garrity
Non-USGS Publications**
Palmer, J. F., Hoen, B., & Garrity, C. (2026). An exploratory investigation of the experience of visible wind turbines. Journal of Digital Landscape Architecture, (11), Article 537770086. https://doi.org/10.14627/537770086.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.