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: 31
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, and the d
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 production plus
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.
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 is the thir
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), maps of whi
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 analytical procedur
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 appears to
2010 updated assessment of undiscovered oil and gas resources of the National Petroleum Reserve in Alaska (NPRA)
Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean volumes of 896 million barrels of oil (MMBO) and about 53 trillion cubic feet (TCFG) of nonassociated natural gas in conventional, undiscovered accumulations within the National Petroleum Reserve in Alaska and adjacent State waters. The estimated volume of undiscovered oil is significantly lower than estimates
Assessment of undiscovered natural gas resources of the Arkoma Basin province and geologically related areas
Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean volumes of 38 trillion cubic feet (TCF) of undiscovered natural gas, 159 million barrels of natural gas liquid (MMBNGL), and no oil in accumulations of 0.5 million barrels (MMBO) or larger in the Arkoma Basin Province and related areas. More than 97 percent of the undiscovered gas occurs in continuous accumulat
Map Database for Surficial Materials in the Conterminous United States
The Earth's bedrock is overlain in many places by a loosely compacted and mostly unconsolidated blanket of sediments in which soils commonly are developed. These sediments generally were eroded from underlying rock, and then were transported and deposited. In places, they exceed 1000 ft (330 m) in thickness. Where the sediment blanket is absent, bedrock is either exposed or has been weathered to p
Digital geologic map and GIS database of Venezuela
The digital geologic map and GIS database of Venezuela captures GIS compatible geologic and hydrologic data from the 'Geologic Shaded Relief Map of Venezuela,' which was released online as U.S. Geological Survey Open-File Report 2005-1038. Digital datasets and corresponding metadata files are stored in ESRI geodatabase format; accessible via ArcGIS 9.X. Feature classes in the geodatabase include g
Science and Products
- Publications
Filter Total Items: 31
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, and the dAssessment 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 production plusAssessment 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.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 is the thir2010 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), maps of whiFormulation 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 analytical procedurNotes 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 appears to2010 updated assessment of undiscovered oil and gas resources of the National Petroleum Reserve in Alaska (NPRA)
Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean volumes of 896 million barrels of oil (MMBO) and about 53 trillion cubic feet (TCFG) of nonassociated natural gas in conventional, undiscovered accumulations within the National Petroleum Reserve in Alaska and adjacent State waters. The estimated volume of undiscovered oil is significantly lower than estimatesAssessment of undiscovered natural gas resources of the Arkoma Basin province and geologically related areas
Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean volumes of 38 trillion cubic feet (TCF) of undiscovered natural gas, 159 million barrels of natural gas liquid (MMBNGL), and no oil in accumulations of 0.5 million barrels (MMBO) or larger in the Arkoma Basin Province and related areas. More than 97 percent of the undiscovered gas occurs in continuous accumulatMap Database for Surficial Materials in the Conterminous United States
The Earth's bedrock is overlain in many places by a loosely compacted and mostly unconsolidated blanket of sediments in which soils commonly are developed. These sediments generally were eroded from underlying rock, and then were transported and deposited. In places, they exceed 1000 ft (330 m) in thickness. Where the sediment blanket is absent, bedrock is either exposed or has been weathered to pDigital geologic map and GIS database of Venezuela
The digital geologic map and GIS database of Venezuela captures GIS compatible geologic and hydrologic data from the 'Geologic Shaded Relief Map of Venezuela,' which was released online as U.S. Geological Survey Open-File Report 2005-1038. Digital datasets and corresponding metadata files are stored in ESRI geodatabase format; accessible via ArcGIS 9.X. Feature classes in the geodatabase include g - Science
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