Xan Fredericks
Biography
Alexandra “Xan” Fredericks is the National Map Liaison to Florida, Puerto Rico, and the US Virgin Islands for the National Geospatial Program and is a member of the Geospatial Information Response Team. Xan has been the Chair of the USGS Lidar User Group since 2017 and a Co-Chair of the Florida Coastal Mapping Program Steering Committee since 2019. Starting in 2007, she specialized in the manual editing and validation of EAARL/EAARL-B data, and has disseminated over 75 lidar-derived GIS datasets with FGDC-compliant metadata. Xan earned a BS in Marine Science from Eckerd College in St. Petersburg, FL, as well as a Postbaccalaureate Certificate in GIS and an MGIS from Pennsylvania State University. She is currently serving as the 2019-2021 GIS Division Director for the American Society for Photogrammetry and Remote Sensing (ASPRS) and as the 2020-2022 President of the Florida Region of ASPRS. Xan is also active in the Urban and Regional Information Systems Association (URISA), serving as a member of the 2020-2023 URISA Board of Directors.
Professional Certifications
GISCI-certified Geographic Information Systems Professional (GISP) #90578
Science and Products
Mapping Florida's Coastal Waters
The FCMaP approach divides Florida into 6 regions that are geologically and physiographically distinct in terms of coastal characteristic.
The Florida Coastal Mapping Program
The Florida Coastal Mapping Program (FCMaP) is an initiative between Federal and Florida State agencies and institutions to coordinate and facilitate the collection and accessibility of Florida coastal seafloor data in order to fill priority areas and gaps.
Coastal and Marine Geology Program Lidar Coordination
Resources, publications, and contacts for lidar.
A federal-state partnership for mapping Florida's coast and seafloor
The Florida Coastal Mapping Program, a partnership of state and federal agencies, has a goal of having modern, consistent, high- resolution sea-floor data for all of Florida’s coastal zone in the next decade to support a myriad of coastal zone science and management applications. One of the early steps in the implementation process is to...
Hapke, Cheryl J.; Druyor, Ryan; Baumstark, Rene D.; Kramer, Philip; Fitos, Ekaterina; Fredericks, Xan; Fetherston-Resch, Elizabeth H.
Florida Coastal Mapping Program—Overview and 2018 workshop report
The Florida Coastal Mapping Program is a nascent but highly relevant program that has the potential to greatly enhance the “Blue Economy” of Florida by coordinating and facilitating sea-floor mapping efforts and aligning partner and stakeholder activities for increased efficiency and cost reduction. Sustained acquisition of modern coastal mapping...
Hapke, Cheryl J.; Kramer, Philip A. ; Fetherston-Resch, Elizabeth H.; Baumstark, Rene D.; Druyor, Ryan; Fredericks, Xan; Fitos, Ekaterina Coastal Topography—Assateague Island, Maryland and Virginia, Post-Hurricane Hermine, 10–12 September 2016
Lidar-derived seamless (bare earth and submerged) topography Digital Elevation Model (DEM) mosaic and classified point-cloud datasets were produced from remotely sensed, geographically referenced elevation measurements collected post-Hurricane Hermine on September 10–12, 2016.
Fredericks, Alexandra M.; Plant, Nathaniel G. EAARL Coastal Topography—Chandeleur Islands, Post-Hurricane Katrina, 2005
These datasets, prepared by the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center, provide lidar-derived first-surface and bare-earth topography for the Chandeleur Islands, Louisiana. Elevation measurements were acquired by the Experimental Advanced Airborne Research Lidar (EAARL) during September 2005, immediately following...
Kranenburg, Christine; Long, Joseph W.; Fredericks, Alexandra M. EAARL coastal topography—northwest Florida, post-Hurricane Katrina, 2005
These datasets, prepared by the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center, provide lidar-derived first-surface and bare-earth topography for a portion of northwest Florida. Elevation measurements were acquired by the Experimental Advanced Airborne Research Lidar (EAARL) in September 2005, immediately following...
Fredericks, Alexandra M.; Kranenburg, Christine; Doran, Kara EAARL Coastal Topography—Northern Assateague Island National Seashore, Maryland and Virginia, 2003: Bare earth
These datasets, prepared by the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center in collaboration with the National Park Service, provide lidar-derived bare-earth topography for Northern Assateague Island National Seashore, Maryland and Virginia. Elevation measurements were acquired by the Experimental Advanced Airborne...
Kranenburg, Christine; Fredericks, Alexandra M.; Nagle, David B. EAARL Coastal Topography–Assateague Island National Seashore, Maryland and Virginia, 2005
These datasets, prepared by the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center in collaboration with the National Park Service, provide lidar-derived first-surface and bare-earth topography for Assateague Island National Seashore, Maryland and Virginia. Elevation measurements were acquired by the Experimental Advanced...
Kranenburg, Christine J.; Fredericks, Alexandra M.; Nagle, David B. EAARL-B Topography—Suncook River, New Hampshire, 5–6 November 2013: Seamless (bare earth and submerged)
This point-cloud dataset, prepared by the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center, provides lidar-derived seamless (bare earth and submerged) topography for a portion of the Suncook River in New Hampshire. Elevation measurements were acquired by the second-generation Experimental Advanced Airborne Research Lidar (...
Fredericks, Alexandra M.; Kranenburg, Christine; Nagle, David B. Coastal Topography—Assateague Island, Maryland and Virginia, Post-Hurricane Joaquin, 26 November 2015
Lidar-derived bare-earth topography Digital Elevation Model (DEM) mosaic and classified point-cloud datasets were produced from remotely sensed, geographically referenced elevation measurements collected post-Hurricane Joaquin on November 26, 2015.
Fredericks, Alexandra M.; Plant, Nathaniel G. Coastal Topography—Fire Island, New York, 07 May 2012
Lidar-derived bare-earth topography Digital Elevation Model (DEM) mosaic and classified point-cloud datasets for Fire Island, New York, were produced from remotely sensed, geographically referenced elevation measurements collected on May 7, 2012.
Fredericks, Alexandra M.; Hapke, Cheryl J.; Lentz, Erika EAARL Coastal Topography—Assateague Island National Seashore, Maryland and Virginia, 2002
These datasets, prepared by the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center in collaboration with the National Park Service, provide lidar-derived first-surface and bare-earth topography for Assateague Island National Seashore, Maryland and Virginia. Elevation measurements were acquired by the Experimental Advanced...
Kranenburg, Christine; Fredericks, Alexandra M.; Nagle, David B. EAARL Coastal Topography—Chandeleur Islands, Louisiana, 12-13 February 2011: Seamless (bare earth and submerged)
This XYZ dataset, prepared by the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center, provides lidar-derived seamless (bare earth and submerged) topography for the Chandeleur Islands in Louisiana. Elevation measurements were acquired by the first-generation Experimental Advanced Airborne Research Lidar (EAARL) on February 12...
Fredericks, Alexandra M.; Plant, Nathaniel G.
USGS staff from across the Coastal and Marine Hazards and Resources Program will present at the virtual Coastal GeoTools conference
Six representatives from the USGS Coastal and Marine Science Centers will present at the upcoming virtual Coastal GeoTools conference February 8–11.
CMHRP Lidar Coordinator/National Geospatial Program Associate National Map Liaison invited as Keynote speaker for the Management Association for Private Photogrammetric Surveyors 2021 Winter Meeting
Xan Fredericks, Lidar Coordinator for the Coastal and Marine Hazards and Resources Program (CMHRP) and Associate National Map Liaison to Florida, Puerto Rico, and the US Virgin Islands for the National Geospatial Program, has been invited by MAPPS to provide the Keynote during their 2021 Winter Meeting.
Coastal and Marine Hazards and Resources Program Lidar Coordinator/National Geospatial Program Associate National Map Liaison invited as Keynote Speaker at the 1st Annual GeoFlo Summit 2019
Xan Fredericks, Lidar Coordinator for the CMHRP and the NGP Associate National Map Liaison to Florida, Puerto Rico, and the US Virgin Islands, has been invited to be the Keynote Speaker for the first-ever GeoFlo Summit.
Coastal and Marine Hazards and Resources Program (CMHRP) Lidar Coordinator/National Geospatial Program (NGP) Associate National Map Liaison invited as Keynote Speaker at the 2019 Central Florida Geographic Information System (GIS) Workshop
Xan Fredericks, Lidar Coordinator for the CMHRP and Associate National Map Liaison to Florida, Puerto Rico, and the US Virgin Islands for the NGP, has been invited by The Central Florida GIS Workshop, Inc. to be the Keynote Speaker for the 2019 Central Florida GIS Workshop.
CMHRP Lidar Coordinator and FCMaP Co-Chair will co-host and present at the 2019 Panhandle of Florida Seafloor Mapping Prioritization Workshop
Xan Fredericks, Lidar Coordinator for the Coastal and Marine Hazards and Resources Program and the USGS Co-Chair for the Florida Coastal Mapping Program, will co-host the 2019 Panhandle of Florida Seafloor Mapping Prioritization Workshop on Wednesday, August 28th in Pensacola, Florida. Additionally, she will be presenting "Using the Prioritization Tool: An Agency Perspective" during the...
CMHRP Lidar Coordinator/NGP Associate National Map Liaison invited as Keynote Speaker at the 2019 South Florida GIS Expo
Xan Fredericks, Lidar Coordinator for the Coastal-Marine Hazards and Resources Program and Associate National Map Liaison to Florida, Puerto Rico, and the US Virgin Islands for the National Geospatial Program (NGP), has been invited by the Palm Beach Countywide GIS Forum to be the Keynote Speaker for the 2019 South Florida GIS Expo.
CMHRP Lidar Coordinator/NGP Geospatial Information Response Team member provided GIS tool demonstration to Mississippi River Cities & Towns Initiative (MRCTI) Mayors
Xan Fredericks, Lidar Coordinator for the Coastal/Marine Hazards and Resources Program and member of the National Geospatial Program's Geospatial Information Response Team, provided a live demonstration of the Mississippi River Cities & Towns Initiative (MRCTI) Imagery and Information Viewer created by the Geospatial Information Response Team in partnership with MRCTI.
CMHRP Lidar Coordinator/USGS Co-Chair of Florida Coastal Mapping Program to co-host the 2019 Northeast Florida Seafloor Mapping Prioritization Workshop
Xan Fredericks, Lidar Coordinator for the Coastal and Marine Hazards and Resources Program and the USGS Co-Chair for the Florida Coastal Mapping Program (FCMaP), will co-host and help moderate the 2019 Northeast Florida Seafloor Mapping Prioritization Workshop on Tuesday, July 9, 2019, in Jacksonville, Florida.
CMHRP Lidar Coordinator/USGS Co-Chair of Florida Coastal Mapping Program presenting at 2019 JALBTCX Airborne Coastal Mapping and Charting Technical Workshop
Xan Fredericks, Lidar Coordinator for the Coastal/Marine Hazards and Resources Program and the USGS Co-Chair for the Florida Coastal Mapping Program, will present "A Federal-State Partnership for Mapping Florida's Coast and Seafloor" at the 20th annual Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) Airborne Coastal Mapping and Charting Technical Workshop.
USGS SPCMSC staff participate in the Tools Showcase at Coastal GeoTools Conference 2019
Xan Fredericks (USGS SPCMSC), Heather Schreppel (Cherokee Nation Technologies), and Kara Doran (USGS SPCMSC) participated in the Tools Showcase at the Coastal GeoTools 2019 conference in Myrtle Beach, South Carolina, February 11th–14th.
CMHRP Lidar Coordinator invited to present at URISA GIS-Pro 2018 Conference
Xan Fredericks, Lidar Coordinator for the Coastal and Marine Hazards and Resources Program, has been invited as a subject matter expert to present a fundamental overview of GIS Conceptual Foundations, as well as Cartography & Visualization, at the 56th Annual URISA GIS-Pro Conference in Palm Springs, California, Oct. 8–10, 2018.