Summary Statement:

This metadata summary applies exclusively to the data as it appears in this Loudoun County intranet/internet mapping application. To see the fully FGDC compliant version of this metadata click here

Abstract:

This layer contains the geographical boundaries of the Metropolitan Washington Council of Government's Traffic Analysis Zones (TAZ) of Loudoun County, Virginia. TAZs are designed to be relatively homogeneous units with respect to population, economic, and transportation characteristics. These TAZ boundaries were delineated by Loudoun County Government and adopted by the Metropolitan Washington Council of Governments.

Purpose:

TAZare used for demographic analyses of Loudoun County, as well as for Loudoun County and Washington, D.C. regional planning purposes. TAZs are also used extensively for transportation modeling and transportation planning.

Supplemental Information:

The Loudoun TAZ layer was generated by Loudoun County so that the TAZ boundaries would overlay with the features in Loudoun County's GIS data sets that the boundaries are designated to follow. The forecasts for the TAZs are updated by Loudoun County generally once every year to account for changes in market conditions, rezonings, and comprehensive plan amendments.

Data are stored in the corporate ArcSDE Geodatabase as a polygon feature class. The coordinate system is Virginia State Plane (North), Zone 4501, datum NAD83 HARN (vertical datum, if applicable, NAVD88), US Survey foot units.

Maintenance and Update Frequency:

Irregular; TAZ boundaries remain unchanged for a period of about 10-15 years

Completeness Report:

Features may have been eliminated or generalized due to scale and intended use. To assist Loudoun County, Virginia in the maintenance of the data, please provide any information concerning discovered errors, omissions, or other discrepancies found in the data.

Data Owner:

Department of Management and Financial Services