Streams

2022 Greene County Digital Orthoimagery Project - In the Spring of 2022 Greene County obtained new aerial LiDAR covering the entire county (+/- 416 sq. miles). The aerial LiDAR was acquired at a point density average of 1-meter with products including LAS (ground and above ground points), ESRI Raster and ASCII (both of which are ground only points). The aerial LiDAR was collected during leaf-off conditions during the spring 2022 flying season (March-April). The LiDAR is being delivered as a countywide dataset, consisting of 2,500' x 2,500' tiles (which matches the ortho tiling system). Along the perimeter of the project area, LiDAR is buffered at 100-feet beyond the countyline. Adjacent flight lines overlap by an average of 30 percent. LiDAR was collected with Leica ALS LiDAR System. The file naming convention is as follows: asxxxyyy (Ohio South Zone); Please note that xxx and yyy represent the easting and northing coordinates (respectively) in state plane feet. Each LiDAR file is approximately 10-20 megabytes in size. Ownership of the data products resides with Greene County and the state of Ohio. LiDAR and ancillary data products produced through this contract are public domain data.2022年格林县数字正射影像项目——2022年春季，格林县获取了覆盖全县全域的新型航空激光雷达（LiDAR）数据，覆盖范围约416平方英里。本次航空激光雷达数据的平均点密度为1米，产出产品包含LAS格式（涵盖地面点与地面以上点云）、ESRI栅格数据，以及仅包含地面点的ASCII格式数据。此次航空激光雷达数据采集于2022年春季飞行季（3月至4月）的无叶期。该激光雷达数据以全县范围数据集形式交付，由2500英尺×2500英尺的瓦片组成，与正射影像瓦片系统适配。在项目区域的周边地带，激光雷达数据沿县界向外延伸100英尺作为缓冲区域。相邻飞行航线的平均重叠率为30%。本次数据采集采用Leica ALS激光雷达系统。文件命名规则如下：asxxxyyy（俄亥俄州南部分区）；请注意，xxx与yyy分别代表州平面坐标系下的东向与北向坐标，单位为英尺。每份激光雷达文件的大小约为10至20兆字节。本数据产品的所有权归格林县与俄亥俄州所有。通过本合同生成的激光雷达及附属数据产品均属于公共域数据。