,Forest tracts is a base map data layer derived by automated processes and processed for cartographic representation at 1:2400 scale. The polygon features represent the areas of forest or scrub cover as seen from above and are mapped to National Map Accuracy Standards (NMAS). Forest is used by both the private and public sectors for comprehensive planning, facility planning, preservation projects, site design and land cover analysis.,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, NAVD88, US Survey foot units. OMAGI updates all base map data via a photogrammetric process, using aerial imagery that is flown yearly in phases. A different portion of the County is updated each year with the base map maintenance services contract, depending upon development patterns and update funding. See "Lineage" section for the list of extents for each Phase area, which are listed as “Data Sources”. The field “UPD_DATE” indicates the date a feature was last re-mapped, although it may have been reviewed for changes more recently.,

,Dataset estimates location and size of trees in the District of Columbia that are not managed by the Urban Forestry Division (https://opendata.dc.gov/datasets/urban-forestry-street-trees/explore). Trees are modeled using an automated feature extraction process applied to 2022 LiDAR data. All data is an estimate, and intended for general representation purposes.,DC 2022 LiDAR was used and processed using the “Extract Trees using Cluster Analysis” script which is included as part of Esri’s 3D Basemap solution. All LiDAR-derived trees within 2 meters of a Urban Forestry Division tree were removed as being duplicates.,Tree diameter (DBH, in inches) was estimated for the LiDAR-derived trees from calculated tree height (in feet) based on the equation: DBH = 0.4003*height - 1.9557. This equation was derived from a statistical analysis of a detailed park inventory tree data set and has an R^2 = 0.7418.,Extreme outliers were also modified, with any DBH larger than 80 inches being converted to a DBH of 80 inches.,

,Data Updated: Quarterly,Metadata,,A conservation easement restricts the use or development of real property for the following reasons: -Retaining or protecting natural or open-space values of the property;-Assuring its availability for agricultural, forestall, recreational, or open-space use;-Protecting natural resources;-Maintaining or enhancing air or water quality; or-Preserving the historical, architectural or archaeological aspects of the property.A landowner may convey such an easement to a public body or a qualified private conservation organization. In Virginia, public bodies may accept these types of easements under the Open Space Land Act, Va. Code § 10.1-1700 et seq. Qualifying private land trusts operate under the Conservation Easement Act, Va. Code § 10.1-1009 et seq.While this data will be updated as needed, it may not contain recently recorded easements. There are over 75,000 acres of land with permanent conservation easements within the County. For more information on conservation easements, please see www.loudoun.gov/conservationeasements,

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Listing of both publicly and privately maintained trees in the public right of way, with information on the condition, location, size, species and maintenance responsibility. Data was collected with the intent to predict maintenance needs, as well as to show the level of diversification within the street tree population.,

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An Assessment of Existing and Potential Tree Canopy in Loudoun County, Virginia.,

Displays Combined Tree Point maintained by the Seattle Department of Transportation. This is a presentation view of 5 contributing datasets from 4 city departments. Contributing datasets:,

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Seattle Parks and Recreation's Tree Inventory of individual trees on SPR property.,