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    Organization
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    Historical Data Working Group Note:Working Group and Subcommittee Charter Updates
The Users/Historical Data Working Group (UHDWG) promotes and coordinates activities among Federal agencies that are users of geospatial data. The UHDWG promotes awareness among Federal agencies of the historical dimension to geospatial data; facilitates the long-term retention, storage, preservation, and accessibility of selected geospatial data; and works to establish mechanisms for the coordinated development, use, sharing, and dissemination of historically valuable geospatial data that have been financed in whole or in part by Federal funds. The UHDWG Charter has more information about the organization of the working group.
Recent accomplishments
FY 2015 Accomplishments
In FY 2015, the UHDWG petitioned the FGDC CG to consider the “Guidance on the Selection and Appraisal of Geospatial Content of Enduring Value” document as an official FGDC publication. The UHDWG prepared this guidance document to help Federal agencies and data stewards define geospatial content of enduring value to the Nation. This guidance suggests possible priority approaches on how resources might be allocated to support long-term preservation and access through appropriate Selection and Appraisal processes in a challenging funding environment. While many Federal Government applications rely on the most current available content, there is increasing demand for older content to support historical and temporal  analyses related to change in the Earth’s natural and human landscape, including physical infrastructures. Examples of applications that require historical content include the study of climate change, disaster planning, environmental impact analysis, industry site location planning, and the resolution of legal challenges. The document provides inputs to future FGDC lifecycle planning, including future iterations of the National Geospatial Data Asset management strategy.
In addition, the UHDWG held monthly webinars for members to discuss issues and share topical information on geospatial use, preservation, and stewardship. Topics included UHDWG Subcommittee members’ continued work with the International Council for Science CODATA Task Group (www.codata.org) on data at risk; identifying resources at risk and exploring early warning and rescue efforts; exploring the impacts and costs of Government shutdowns on access to, and preservation of, historical data; and the USGS offline archive media-trade studies that are intended to inform those interested in market options and related factors to the archive.
Activity Reports
The FGDC UHDWG provides a progress reports to the FGDC Coordination Group. These reports contain the most current updates on the activities of the Working Group.
File PDF document
                        UHDWG Update to CG - June 2015
        
        
            File Microsoft PowerPoint presentation
                        UHDWG Update to CG - September 2014
        
        
            File Microsoft PowerPoint presentation
                        UHDWG Update to CG - March 2014All Updates
Meeting Materials
**The Users/Historical Data Working Group meets the fourth Thursday of each month at 11:00 a.m. EASTERN via conference call**. The group welcomes Federal and non-Federal participants who are interested in the long-term stewardship of geospatial data. To get meeting announcements and group updates, please contact Butch Lazorchak at wlaz@loc.gov.
Meeting  Presentations
Key Documents
Guidance on the Selection and Appraisal of Geospatial Content of Enduring Value, May 2015 Draft(pdf)
FGDC Users/Historical Data Working Group Information Sheet(pdf)
GeoPlatform Version 3 UHDWG Collected Comments(xls)
Resources
Geographical Markup Language
Processes Behind Archiving and Preserving Data
Spatial Data Transfer Standard
What is Involved with Appraisal
Digitizing Historical Maps and Charts
The Geospatial Data Preservation Resource Center
Sustainability of Digital Formats: Planning for Library of Congress Collections. Formats for Geospatial Data
Geospatial Multistate Archive and Preservation Partnership
Columbia University CIESIN Geospatial Electronic Records
American Association of Geographers Historical GIS Clearinghouse and Forum
Open Geospatial Consortium Data Preservation Working Group
Scanning and Georeferencing Historical USGS Quadrangles

Membership
**Vacant** (Chair)Email: fgdc@fgdc.gov
UHDWG Members
PARTICIPATE
The working group welcomes everyone that has an interest in participating and contributing to its activities. Please send an email to fgdc@fgdc.gov to receive instructions on how you can participate.
You can also subscribe to the UHDWG Listserv to stay connected with the activities of the working group.
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