Develop Websites Using GIS Web Services

Learn how to make and retrieve on-line maps and data about Washington DC via web-services. Please feel free to integrate these web services into your website(s). Using these will save time, money and the uncertainty of having the most current data.

Web Map services are available in two projections: Maryland State Plane and Web Mercator. Support for these services are available to District of Columbia agencies and their contractors only. If for some reason the services are interrupted or unavailable a notice is posted through the DC GIS subscription service.

Topics

Reasons to Use Web Services
How To Guides
Open DC Web Map Services in ArcMap (.mxd) - Click this MXD file to open it in ArcMap versions 9.2 SP4 and above.

Web Data Services

Name	Description
MAR Location Verifier	Verify or find a DC address, intersection, block, square suffix lot and place name
Property Data Services	Functions to retrieve property identifiers from Vector Property data.
Basic Map	Generate a jpeg map with user defined parameters including map width, height and layers
Category Contents	View category information based on Category ID
Category Features	A point-to-polygon service using Category ID and Maryland State Plane Coordinate System
Feature Details	Query a feature based on Feature ID
Point Area Report	Returns results based on Maryland State Plane Coordinate System and Category ID
Political Area Report	Query political area information
Political Area Summary	Get all political area information based on Maryland State Plane Coordinate System
Coordinate Converter	Converts Maryland State Plane Coordinate System to United States National Grid or Latitude/Longitude

Web Map Services

	Maryland State Plane		Web Mercator
Name	Sample	Description	Sample	Description
Administrative and Other Boundaries	-	-	View	View
Annotation	-	-	View	View
Business and Economic Development	-	-	View	View
Cultural and Society	-	-	View	View
DC Basemap	View	View	View	View
Demographic	-	-	View	View
Education	View	View	View	View
Elevation	-	-	View	View
Environment	View	View	View	View
Facility and Structure	-	-	View	View
Health	-	-	View	View
Historic	View	View	View	View
Location	View	View	View	View
Orthophoto 2011	View	View
Orthophoto 2010	View	View	-	-
Orthophoto 2008	View	View	-	-
Orthophoto 2007	View	View	-	-
Owner Polygons	View	View	View	View
Planning, Landuse and Zoning	-	-	View	View
Property and Land	View	View	View	View
Property Square Labels	View	View	View	View
Public Safety	-	-	View	View
Public Service	-	-	View	View
Recreation	-	-	View	View
Transportation	-	-	View	View
Utility and Communication	-	-	View	View

Service Need

Web developers can integrate these web services into their website(s). Using these will save time, money and the uncertainty of having the most current data.

Service at a Glance

Provided By: OCTO
Phone: (202) 727-6482
Days: Monday - Friday
Time: 9:00 am - 5:00 pm
Location: 200 I Street SE, 5th Floor Washington, DC 20003

Request this Service

Related Services

Use the ArcGIS JavaScript Extension for Google Maps API
Use the MAR Web Data Service in .NET
Use the MAR Web Data Service in Client Script

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