Unverified Water Right Device Points

An unverified device point represents a physical man-made device located on the surface of the earth, for example a well or a pump, whose exact location is not known. The locations of these points are instead illustrated using centroids, which signify the center of the relevant Public Land Survey System (PLSS) subdivision. The PLSS is a grid system of townships and sections covering most of the U.S. A township is typically a 6×6 area composed of 36 sections, with each section being approximately one square mile. The point does not represent a water right document.The point may or may not be associated with a water right document. There are many points that are not associated with a water right document, and therefore the point is not inherently a point-of-diversion or point-of-withdrawal (POD or POW). A point should only be thought of as a POD or POW by virtue of being associated with a water right document.The point may be associated with one or more water right documents.Many points are initially located based on the water right document’s source narrative description (legal description). However, because the GWIS point represents a physical man-made device located on the surface of the earth, it may be relocated (and coded accordingly) without changing the narrative description on the water right document.未验证设备点位（unverified device point）指坐落于地球表面的人工实体设备，例如水井或水泵，其精确位置尚未明确。此类点位的位置转而采用质心（centroids）进行标注，质心即对应美国公共土地测量系统（Public Land Survey System, PLSS）分区的几何中心。美国公共土地测量系统是一套覆盖美国大部分区域的镇区与地块网格系统，一个标准镇区通常为6×6平方英里的区域，由36个地块组成，每个地块面积约为1平方英里。该点位本身并非水权文件，且可能与水权文件存在关联，也可能并无关联。存在大量未绑定水权文件的点位，因此此类点位本质上并非取水点（point-of-diversion, POD）或退水点（point-of-withdrawal, POW）。仅当点位与水权文件建立关联后，才可将其认定为取水点或退水点。该点位可关联至一份或多份水权文件。多数点位最初是依据水权文件中的原始叙述性描述（法律描述）进行定位的。然而，由于GWIS点位代表地球表面的人工实体设备，其位置可被调整（并同步更新对应编码），且无需修改水权文件中的叙述性描述。