BUOV Congressionally Designated Alignment
收藏资源简介：
This is a vector line showing the approximate designated route of the Butterfield Overland national historic trail. The coordinates for this data set were generally heads-up digitized at a scale of 1:100,000 (or larger) off of a series of planning maps, historic maps, and DRGs using a variety of GIS software packages (see feature attributes for more info). The purpose of this feature service is to show the location of the designated route of the Butterfield Overland national historic trail. This data set represents a continuous representation of the trail as depicted in the Comprehensive Plan. The NHT alignment was identified before ground-verification could occur and consequently the designated trail does not always coincide with historic trail trace. This trail is not accessible nor developed for the entire length depicted in this data set. Do not cross private land without permission. The intended use of all data in the trail GIS library is to support diverse trail activities including planning, management, maintenance, research, and interpretation. To view additional metadata and to download the spatial data, please visit the National Park Service, Integrated Resource Management Application (IRMA) website/NPS OpenData Portal: NPS Datastore - Butterfield Overland National Historic Trail BUOV Congressionally Designated Alignment | National Park Service
本数据集为呈现巴特菲尔德陆路国家历史步道（Butterfield Overland National Historic Trail）指定路线近似轮廓的矢量线（vector line）数据。本数据集的坐标信息主要依托多幅规划地图、历史地图及数字栅格图（Digital Raster Graphic，DRGs），通过多款地理信息系统（Geographic Information System，GIS）软件，以1:10万（或更大）比例尺完成平视数字化（heads-up digitized）采集，详细信息请参阅要素属性（feature attributes）。本要素服务的设计目的为展示该步道的指定路线位置。本数据集完整还原了综合规划（Comprehensive Plan）中所描绘的步道全线。国家历史步道（National Historic Trail，NHT）的路线在开展地面验证前即已确定，因此指定步道未必始终与历史步道遗迹完全吻合。本数据集所展示的步道全线均未对外开放，也未完成开发利用。未经许可，请勿擅自穿越私有土地。本步道地理信息系统库内所有数据的预期用途为支持各类步道相关工作，涵盖规划、管理、维护、研究与解说。如需查看更多元数据并下载空间数据，请访问美国国家公园管理局（National Park Service，NPS）综合资源管理应用程序（Integrated Resource Management Application，IRMA）官网或国家公园管理局开放数据门户：国家公园管理局数据存储库——巴特菲尔德陆路国家历史步道国会指定路线 | 美国国家公园管理局
