Chatham County - Sanitary Sewer Manholes

Point locations representing sanitary sewer manhole locations for Chatham County, NC sewer systems. Manhole features connect two or more pipes and control the flow of water in the network through pipe elevations. Manhole invert elevations are stored on the pipes, instead of the manholes themselves. Chatham GIS SOP: "MAPSERV-118"本数据集为北卡罗来纳州查塔姆县（Chatham County, NC）市政污水管网的检查井空间点位数据，用于表征该区域污水系统内检查井的空间分布位置。检查井设施可连接两条及以上管道，并通过管道高程参数调控管网内的水流运行状态。检查井的井底高程值存储于关联管道的属性字段中，而非检查井自身的属性项。查塔姆县地理信息系统（Geographic Information System, GIS）标准作业程序（Standard Operating Procedure, SOP）：MAPSERV-118