District of Columbia boundary. The dataset is a polygon representing the District of Columbia boundary, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO) and participating D.C. government agencies. The boundary was identified from public records and heads-up digitized using a combination of the 1995 orthophotographs, planimetric roads features, and the USGS digital raster graphic quad sheets, and 1999 planimetrics for the Potomac River boundary.Also see the District's Boundary Stone markers.

The DC Basemap provides a reference map for the District of Columbia projected in Web Mercator. Access the ArcGIS Rest endpoint. The basemap utilizes the most current planimetric and reference data available and represents the real world with foundation map layers derived from base data collection done in 2023.The service is provided by the Office of the Chief Technology Officer.

Building structures include parking garages, ruins, monuments, and buildings under construction along with residential, commercial, industrial, apartment, townhouses, duplexes, etc. Buildings equal to or larger than 9.29 square meters (100 square feet) are captured. Buildings are delineated around the roof line showing the building "footprint." Roof breaks and rooflines, such as between individual residences in row houses or separate spaces in office structures, are captured to partition building footprints. This includes capturing all sheds, garages, or other non-addressable buildings over 100 square feet throughout the city. Atriums, courtyards, and other “holes” in buildings created as part of demarcating the building outline are not part of the building capture. This includes construction trailers greater than 100 square feet. Memorials are delineated around a roof line showing the building "footprint."Bleachers are delineated around the base of connected sets of bleachers. Parking Garages are delineated at the perimeter of the parking garage including ramps. Parking garages sharing a common boundary with linear features must have the common segment captured once. A parking garage is only attributed as such if there is rooftop parking. Not all rooftop parking is a parking garage, however. There are structures that only have rooftop parking but serve as a business. Those are captured as buildings. Fountains are delineated around the base of fountain structures.

The DC Office of the Chief Financial Officer (OCFO), Office of Tax and Revenue (OTR), Real Property Tax Administration (RPTA) values all real property in the District of Columbia. This public interactive Real Property Assessment map application accompanies the OCFO MyTax DC and OTR websites. Use this mapping application to search for and view all real property, assessment valuation data, assessment neighborhood areas and sub-areas, detailed assessment information, and many real property valuation reports by various political and administrative areas. View by other administrative areas such as DC Wards, ANCs, DC Squares, and by specific real property characteristics such as property type and/or sale date. If you have questions, comments, or suggestions regarding the Real Property Assessment Map, contact the Real Property Assessment Division GIS Program at (202) 442-6484 or maps.title@dc.gov.

Hydro-Flattened Bare Earth DTM. The dataset was created using the lidar bare earth points and 3D hydro breaklines to a resolution of 1 m (April 2018). Voids exist in the data due to data redaction conducted under the guidance of the United States Secret Service. All lidar data returns and collected data were removed from the dataset based on the redaction footprint shapefile generated in 2017.This is a MD iMAP hosted service. Find more information at https://imap.maryland.gov.Image Service Link: https://mdgeodata.md.gov/lidar/rest/services/WashingtonDC/MD_washingtonDC_dem_ft/ImageServer

For a city, street blocks are a very common way in which to organize and relate asset types such as bicycle lanes. The bicycle lane layer is an extract of its parent layer Roadway Blocks. The bicycle lane layer provides locations for a variety of different types of lane types throughout Washington, DC. Bicycle lane dataset is derived from the Roadway Block centerlines.

District of Columbia quadrants. The dataset contains locations and attributes of the District of Columbia quadrants, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO) and participating D.C. government agencies.The DCQuadPly was updated in January 2022 in the three following areas: 1) South Capitol Street has had major changes in its location due to the Frederick Douglass Bridge Project. These changes include the actual South Capitol Street Bridge and the adjacent new ovals to the north and south. The new quadrant boundary generally runs along the median of South Capitol Street. There is a small triangular area that is south of the north oval and also west of the South Capitol Street bridge which is in fact part of the Southeast quadrant. 2) boundary was redrawn around 1 HAWAII AVENUE NE so that the address is located in the NE quadrant. 3) Small adjustment of the boundary by Kansas Avenue NW.

These data provide an accurate high-resolution shoreline compiled from imagery of PORT OF WASHINGTON, DC . This vector shoreline data is based on an office interpretation of imagery that may be suitable as a geographic information system (GIS) data layer. This metadata describes information for both the line and point shapefiles. The NGS attribution scheme 'Coastal Cartographic Object Attribu...

Closed Circuit TV Street Cameras locations. The dataset contains locations and attributes of CCTV and other cameras, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO) and participating D.C. government agencies.

Proposed boundaries of the State of Washington DC and Federal District as approved by DC Council on October 18, 2016. Read the complete testimony from the DC Office of Planning at: Office of Planning Proposed New Columbia Boundaries. A revised version of this boundary was created by legislation passed by the US House of Representatives in 2020.

Primary care centers where residents can find available health care services in the District of Columbia. The dataset contains locations and attributes of Primary Care Centers, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO) and participating D.C. government agencies. A database provided by the DC Department of Health (DOH) identified Primary Care Centers and DC GIS staff geo-processed the data.

This data set contains all Virginia Railway Express (VRE) stations in Virginia. The data set was originally obtained from the Metro Washington Council of Governments (MWCOG) GIS data clearinghouse and snapped to the Fairfax County railroad data set using 2002 aerial photography as a background. This data set was created to display all VRE stations in Virginia only and can be used in conjunction with the railroad data set.

This layer is a component of Transportation_WebMercator.

Provided by the Office of the Chief Technology Officer

© DC GIS

These data were automated to provide an accurate high-resolution historical shoreline of Potomac River, Washington, D.C. suitable as a geographic information system (GIS) data layer. These data are derived from shoreline maps that were produced by the NOAA National Ocean Service including its predecessor agencies which were based on an office interpretation of imagery and/or field survey. T...

Nursing Home locations. The dataset contains locations and attributes of Nursing Homes, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO) and participating D.C. government agencies. Information from DC Health and Medicare identified Nursing Homes locations and DC GIS staff geo-processed the data.