Storm Drain Marker Installations

Storm Drain Marker Installations is a data layer showing where storm drain markers were installed on storm sewer catchments. Markers indicate that the sewer catchments drain to the Chesapeake Bay watershed and to report pollution to DC's 311 service line. Markers are installed by DOEE and volunteer groups. This dataset should not be considered as a complete capture of all DC storm drains. There are some storm drains that are knowingly not included within this layer. Catchbasin ID refers to DC Water's ID for each storm drain.雨水排水口标识安装数据层（Storm Drain Marker Installations）：该数据层展示了安装在雨水汇水区（storm sewer catchments）上的雨水排水口标识的具体布设位置。此类标识用于明确对应雨水汇水区的径流最终汇入切萨皮克湾流域（Chesapeake Bay watershed），并提示可通过华盛顿特区（DC）的311服务热线上报该区域的污染问题。本类标识由特区环境与能源部（DOEE）及志愿者团体负责安装。需特别说明，本数据集不应被视作华盛顿特区所有雨水排水口的完整收录记录，已知有部分雨水排水口未被纳入该数据层。雨水篦编号（Catchbasin ID）为华盛顿特区水务局（DC Water）为各雨水排水口分配的专属标识编号。