Jefferson County KY Railroads

The RR layer represents railroads in Jefferson County, Kentucky excluding the Ft. Knox Military Reservation Area. Jefferson County railroads use the Horizontal 1983 North American Datum, Kentucky State Plane North Zone. New data was digitized by NV5 in Spring 2025 using recently acquired imagery from Spring 2024.本铁路图层（RR Layer）指代肯塔基州杰斐逊县境内的铁路线路，不包含诺克斯堡军事保留区（Ft. Knox Military Reservation Area）范围。杰斐逊县的铁路数据采用1983年北美水平基准面（Horizontal 1983 North American Datum）与肯塔基州平面坐标系北带（Kentucky State Plane North Zone）作为坐标基准。该数据集的新版数据由NV5公司于2025年春季，依托2024年春季获取的最新影像资料完成数字化处理。