Loudoun Forest

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. 

리소스

항목
CKAN dataset id 9686c839-4b6f-4ec0-8926-f52a9f6666ed
상태 active
url https://catalog.data.gov/dataset/loudoun-forest-61c3b
버전 2024-02-09
라이선스 other-license-specified
accessLevel public
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
harvest_object_id ead0744f-05b6-443b-b434-c53f76bbea83
harvest_source_id bc39e510-cff7-4263-8d5b-7c800dd08cd6
harvest_source_title Loudoun County Virginia Data Source
identifier https://www.arcgis.com/home/item.html?id=f6f29d4ae8f24ccbb9fdbe9614db5f47&sublayer=10
issued 2019-01-16T21:45:46.000Z
landingPage https://geohub-loudoungis.opendata.arcgis.com/maps/LoudounGIS::loudoun-forest
license https://logis.loudoun.gov/loudoun/disclaimer.html
metadata_type geospatial
modified 2024-02-07T23:03:38.843Z
old-spatial -77.9645,38.8416,-77.3139,39.3252
publisher Loudoun GIS
resource-type Dataset
source_datajson_identifier true
source_hash 3a8d9cc7d9007795c8879426451c4157be63c0d9238f38a0dd9767de9faef208
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-77.9645, 38.8416], [-77.9645, 39.3252], [-77.3139, 39.3252], [-77.3139, 38.8416], [-77.9645, 38.8416]]]}
theme {geospatial}
담당자 LoudounCounty
담당자 연락처 mapping@loudoun.gov
제공 기관 Loudoun County, Virginia
최초 수집 일시 2024-02-20T23:12:44…
최근 수집 일시 2024-02-20T23:12:44…

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