VT Data - County Boundaries

(Link to Metadata) The BNDHASH dataset depicts Vermont village, town, county, and Regional Planning Commission (RPC) boundaries. It is a composite of generally 'best available' boundaries from various data sources (refer to ARC_SRC and SRC_NOTES attributes). However, this dataset DOES NOT attempt to provide a legally definitive boundary. The layer was originally developed from TBHASH, which was the master VGIS town boundary layer prior to the development and release of BNDHASH. By integrating village, town, county, RPC, and state boundaries into a single layer, VCGI has assured vertical integration of these boundaries and simplified maintenance. BNDHASH also includes annotation text for town, county, and RPC names. BNDHASH includes the following feature classes: 1) BNDHASH_POLY_VILLAGES = Vermont villages 2) BNDHASH_POLY_TOWNS = Vermont towns 3) BNDHASH_POLY_COUNTIES = Vermont counties 4) BNDHASH_POLY_RPCS = Vermont's Regional Planning Commissions 5) BNDHASH_POLY_VTBND = Vermont's state boundary 6) BNDHASH_LINE = Lines on which all POLY feature classes are built The master BNDHASH data is managed as an ESRI geodatabase feature dataset by VCGI. The dataset stores village, town, county, RPC, and state boundaries as seperate feature classes with a set of topology rules which binds the features. This arrangement assures vertical integration of the various boundaries. VCGI will update this layer on an annual basis by reviewing records housed in the VT State Archives - Secretary of State's Office. VCGI also welcomes documented information from VGIS users which identify boundary errors. NOTE - VCGI has NOT attempted to create a legally definitive boundary layer. Instead the idea is to maintain an integrated village/town/county/RPC/state boundary layer which provides for a reasonably accurate representation of these boundaries (refer to ARC_SRC and SRC_NOTES). BNDHASH includes all counties, towns, and villages listed in "Population and Local Government - State of Vermont - 2000" published by the Secretary of State. BNDHASH may include changes endorsed by the Legislature since the publication of this document in 2000 (eg: villages merged with towns). Utlimately the Vermont Secratary of State's Office and the VT Legislature are responsible for maintaining information which accurately describes the locations of these boundaries. BNDHASH should be used for general mapping purposes only. * Users who wish to determine which boundaries are different from the original TBHASH boundaries should refer to the ORIG_ARC field in the BOUNDARY_BNDHASH_LINE (line feature with attributes). Also, updates to BNDHASH are tracked by version number (ex: 2003A). The UPDACT field is used to track changes between versions. The UPDACT field is flushed between versions.(元数据链接) BNDHASH数据集描绘了佛蒙特州（Vermont）的村庄、城镇、县及区域规划委员会（Regional Planning Commission，RPC）的边界。该数据集整合了多源数据下的通用「最佳可用」边界，相关信息请参阅ARC_SRC与SRC_NOTES属性。但本数据集并非旨在提供具有法律效力的官方边界。 该图层最初源自TBHASH——在BNDHASH开发发布前，TBHASH曾是VGIS的官方城镇边界主图层。佛蒙特州地理空间信息办公室（VCGI）通过将村庄、城镇、县、RPC及州界整合为单一图层，实现了各类边界的垂直整合，并简化了维护工作。BNDHASH数据集还包含城镇、县及RPC的注记文本。 BNDHASH数据集包含以下要素类：1) BNDHASH_POLY_VILLAGES = 佛蒙特州村庄边界；2) BNDHASH_POLY_TOWNS = 佛蒙特州城镇边界；3) BNDHASH_POLY_COUNTIES = 佛蒙特州县级边界；4) BNDHASH_POLY_RPCS = 佛蒙特州区域规划委员会辖区边界；5) BNDHASH_POLY_VTBND = 佛蒙特州州界；6) BNDHASH_LINE = 所有多边形要素类所依托的线要素。 VCGI将BNDHASH主数据作为ESRI地理数据库要素数据集进行管理。该数据集将村庄、城镇、县、RPC及州界存储为独立的要素类，并通过一系列拓扑规则绑定各要素，此架构确保了各类边界的垂直整合。 VCGI将通过审核佛蒙特州档案馆与州务卿办公室留存的档案，每年对该图层进行更新。VCGI同时欢迎VGIS用户提交可佐证的边界错误相关文档。 注意：VCGI并未旨在创建具有法律效力的官方边界图层。其核心目标是维护一套整合的村庄/城镇/县/RPC/州界图层，以合理准确地呈现各类边界（相关信息请参阅ARC_SRC与SRC_NOTES属性）。 BNDHASH数据集涵盖了州务卿办公室发布的《2000年佛蒙特州人口与地方政府》中列出的所有县、城镇及村庄。BNDHASH可能包含2000年该文件发布后，经佛蒙特州立法机关批准的边界变更（例如村庄与城镇合并的情况）。最终，佛蒙特州州务卿办公室与佛蒙特州立法机关负责维护能够准确描述各类边界位置的官方信息。 BNDHASH仅可用于通用制图场景。* 若用户需要对比本图层与原始TBHASH边界的差异，请参阅带属性的线要素图层BOUNDARY_BNDHASH_LINE中的ORIG_ARC字段。此外，BNDHASH的更新会通过版本号进行追踪（例如2003A）。UPDACT字段用于追踪不同版本间的变更内容，且该字段会在版本更新时被清空重置。