Utah PLSS Quarter Sections GCDB

PLSSQuarterSections_GCDB is the third level of a hierarchical breakdown of the Public Land Survey System Rectangular surveys. This data is Version 2.3 2020 of the Utah PLSS Fabric. This data set represents the GIS Version of the Public Land Survey System. Updates are expected annually as horizontal control positions from published sources and global positioning system (GPS) observations are added. The primary source for the data is cadastral survey records housed by the BLM supplemented with local records and geographic control coordinates from states, counties as well as other federal agencies such as the USGS and USFS. This data was originally published on 1/3/2017. This is no longer a standard and is now published as a Reference layer. This data is derived from the Second Division of the PLSS which includes quarter, quarter-quarter, sixteenth or government lot division of the PLSS. Updates were made to Quarter Sections in Utah County to add quarter sections to areas that were not broken down less than the Section level. They were added using information from points collected by county surveyors, that is in the data and extrapolating information from adjoining sections wherever possible. They are still areas that could not be interpreted well enough and they were left empty, beyond the section level. Quarter Sections were consolidated from the Quarter Quarter Sections to better represent the four quarters in all Aliquot Part areas. Areas with Lots or Special Surveys remain as is. Updated 4/8/2022PLSSQuarterSections_GCDB 是美国公共土地测量系统（Public Land Survey System, PLSS）矩形测量层级划分的第三级数据。本数据集为犹他州PLSS基础数据集（Utah PLSS Fabric）的2.3版（2020年发布），属于公共土地测量系统的GIS版本。由于将持续纳入公开来源的平面控制点位与全球定位系统（Global Positioning System, GPS）观测数据，该数据集预计每年更新一次。本数据的核心数据源为美国土地管理局（Bureau of Land Management, BLM）馆藏的地籍测量档案，同时补充了各州、郡县以及美国地质调查局（United States Geological Survey, USGS）、美国林务局（United States Forest Service, USFS）等其他联邦机构提供的本地记录与地理控制坐标。本数据最初于2017年1月3日发布，现已不再作为标准数据集，仅以参考图层形式对外发布。本数据源自PLSS二级分区范畴，涵盖四分区块、四分四分区块、十六分区块以及PLSS政府编号地块的划分规则。本次更新针对犹他县的四分区块进行了优化，为未进行低于区块级细分的区域补充了四分区块信息，补充依据为郡县测量人员采集的点位数据，并尽可能从相邻区块推演相关信息；仍有部分区域因无法完成精准解译，未进行低于区块级的划分，保持为空值。为更准确地呈现所有等分地块区域内的四个四分区块，已将四分四分区块合并为四分区块，带有专属地块或特殊测量标记的区域则保持原有格式不变。本数据集最终于2022年4月8日完成更新。