Greenbelt DOTS Milepost Markers

This is a point data set of 1/10th milepost markers for trails along the Boise River from Lucky Peak Dam to the current terminus within the City of Eagle. The trails along the Boise River are generally referred to as ‘the greenbelt’. The milepost markers along the Boise River are collectively known as the Distance and Orientation Trail System (DOTS). Mileposts are a series of numbered markers placed along a route at regular intervals used as reference points. The DOTS divides the greenbelt trails into quadrants; north and south side of the Boise River, and east or west of the origin at the 8th Street pedestrian bridge in Boise, Idaho. Milepost identification is comprised of the quadrant or sector (i.e. NW for northwest, SW for southwest, NE for northeast, and SE for southeast) and a mileage (in tenths of a mile). For example, NE 3.1, indicates the north side of the river, and east of the 8th Street pedestrian bridge by 3.1 miles. There are several known exceptions to this convention. The milepost origin for the north and south trail origins are simply delineated by ‘N’ and ‘S’. Also, several mileposts are marked with a ‘W’ for West where the north and south trails converge. Mileage numbers increase as you move east and west from the 8th Street pedestrian bridge. Milepost markers are not always physically marked on the ground. This data set shows mileposts along the trail centerline and is not meant to represent the physical demarcation of the mileposts. Physical markers, if they exist, will be relatively nearby the point defined in this data set. This data set was created by City of Boise GIS team in cooperation with Boise State University based off of GPS data and heads up digitizing against available GIS trail and orthophotography data. The data has been reviewed by parks, police, and fire staff from several local agencies in Ada County. The data is believed to be generally accurate. This data set is updated irregularly as new GPS data is collected or as changes to the trail system in different jurisdictions occur. The data set is current to the last date of publication. For more information about the Boise River Greenbelt, please visit City of Boise Parks and Recreation.本数据集为博伊西河（Boise River）沿岸步道的十分之一英里间隔里程桩点位数据集，覆盖范围从幸运峰大坝（Lucky Peak Dam）至鹰市（City of Eagle）内的当前步道终点。博伊西河沿岸步道通常被称为“绿道绿带（Greenbelt）”。博伊西河沿岸的里程桩系统统称为距离与定向步道系统（Distance and Orientation Trail System，DOTS）。 里程桩是沿路线按固定间隔设置的一系列带编号标记点，用作路线参照基准。该系统将绿道绿带步道划分为四个象限：以博伊西河的南北岸为界，以及以爱达荷州博伊西市第八街人行桥为起点的东西两侧区域。 里程桩标识由象限/分区代码（如NW代表西北、SW代表西南、NE代表东北、SE代表东南）与里程值（单位为十分之一英里）组成。例如，标识NE 3.1即代表位于河北岸、第八街人行桥东侧3.1英里处。 该标识规则存在若干已知例外情况：南北步道的里程桩起点分别以字母“N”（北）与“S”（南）标识；在南北步道交汇区域，部分里程桩会以字母“W”（西）标注。从第八街人行桥向东西两侧行进时，里程数值均呈递增趋势。 步道上并非总会设置实体里程桩标记。本数据集展示的是步道中轴线上的理论里程桩点位，并非实际物理标记的位置；若存在实体里程桩，其位置通常与本数据集定义的点位相距较近。 本数据集由博伊西市地理信息系统（Geographic Information System，GIS）团队与博伊西州立大学（Boise State University）合作制作，基于GPS采集数据，并通过对照现有GIS步道数据与正射影像（orthophotography）数据进行屏幕数字化生成。该数据集已通过阿达县（Ada County）多家本地机构的公园、警务与消防人员审核，据信整体准确可靠。 本数据集将根据新采集的GPS数据，或不同辖区内步道系统的变更情况不定期更新，最新更新时间为末次发布日期。如需了解博伊西河绿道绿带的更多信息，请访问博伊西市公园与娱乐局官网。