This feature class/shapefile contains locations of convention centers, conference centers, exposition centers, and fairgrounds for the 50 US States, the District of Columbia, and the territory of Puerto Rico. The dataset only includes convention, conference, exposition, and fairground facilities based on data acquired from various open sources which has been referenced in the SOURCE field. This feature class/shapefile contains only facilities large enough to house a convention, trade show, or fair. In the latest update 3,500 records were added and 4 records were deleted. The layer name was changed from "ConventionCenters" to "ConventionCentersFairgrounds". The TYPE field has been changed from a domain of ‘COMPLEX’ and ‘NOT COMPLEX’ to ‘CONVENTION CENTER’, ‘CONVENTION CENTER COMPLEX’, ‘FAIRGROUND’, ‘FAIRGROUND COMPLEX’, ‘MULTIUSE’, and ‘MULTIUSE COMPLEX’.

The local law enforcement locations feature class/ shapefile contains point location and tabular information pertaining to a wide range of law enforcement entities in the United States. Law Enforcement agencies "are publicly funded and employ at least one full-time or part-time sworn officer with general arrest powers". This is the definition used by the US Department of Justice - Bureau of Justice Statistics (DOJ-BJS) for their Census of State and Local Law Enforcement Agencies (CSLLEA). Unlike the previous version of this dataset, published in 2009, federal level law enforcement agencies are excluded from this effort. Data fusion techniques are utilized to synchronize overlapping yet disparate source data. The primary sources for this effort are the DOJ-BJS CSLLEA from 2008 and the previously mentioned 2009 feature class from Homeland Security Infrastructure Foundation-Level Data (HIFLD). This feature class contains data for agencies across all 50 U.S. states, Washington D.C. and Puerto Rico.

This feature class/shapefile represents Petroleum Terminals. Petroleum Terminals are used to provide storage of both crude oil and refined petroleum products. Data contains locational and other attribute information for operable bulk petroleum product terminals with a total bulk shell storage capacity of 50,000 barrels or more, and/or ability to receive volumes from tanker, barge, or pipeline. Geographical coverage includes the United States, U.S. Virgin Islands, Puerto Rico, Guam, and Northern Marina Islands. This update includes revalidation of 658 records, the addition of 10 new records and the removal of 47 records for a total of 2,302 terminals. 8 terminals were removed because it was confirmed that they no longer exist. 22 terminals were removed because they were confirmed as duplicate records. 17 terminals were merged with adjacent terminals. Domains for the TYPE and COMMODITY fields were standardized in the layer and added to the metadata.

The Washington State Parcels Project provides a statewide data set of tax parcels attributes that cover those counties that currently have digital tax parcels. Attribute data has been normalized so that the field names are the same across all counties. The data set contains the tax parcel identification number, situs addresses, the Department of Revenue land use codes, improvement and land values, and a link to the county's assessor's website for parcel information (if it exists).

The prison boundary feature class contains secure detention facilities. These facilities range in jurisdiction from federal (excluding military) to local governments. Polygon geometry is used to describe the extent of where the incarcerated population is located (fence lines or building footprints). This feature class’s attribution describes many physical and social characteristics of detention facilities in the United States and some of its territories. The attribution for this feature class was populated by open source search methodologies of authoritative sources. Changes from the previous version include 70 records added, 72 closed, and 37 removed.

This feature class/shapefile contains locations of Hospitals for 50 US states, Washington D.C., US territories of Puerto Rico, Guam, American Samoa, Northern Mariana Islands, Palau, and Virgin Islands. The dataset only includes hospital facilities based on data acquired from various state departments or federal sources which has been referenced in the SOURCE field. Hospital facilities which do not occur in these sources will be not present in the database. The source data was available in a variety of formats (pdfs, tables, webpages, etc.) which was cleaned and geocoded and then converted into a spatial database. The database does not contain nursing homes or health centers. Hospitals have been categorized into children, chronic disease, critical access, general acute care, long term care, military, psychiatric, rehabilitation, special, and women based on the range of the available values from the various sources after removing similarities. In this update 123 additional hospitals were added and 26 additional helipads were identified.

United States Department of Agriculture Washington Metropolitan Area Telephone Directory. Listings are available through search form or in a PDF of the entire directory, dated March 4, 2017. Search fields are: Last Name, First Name, Phone Number, Agency, Building. Internet Archive URL: https://web.archive.org/web/2018*/https://dc-directory.hqnet.usda.gov/dlsnew/phone.aspx