Drainage - Network Features

Point features representing drainage network features such as forcemain blowoffs and forcemain cleanouts. These network features help conveying wastewater under pressure from the discharge side of a pump to a discharge point. Updated as an ongoing process.本数据集包含的点特征（Point features）用于表征排水管网的相关设施，例如压力输水管（forcemain）放空排污口与压力输水管检修清扫口。此类管网设施可将废水经泵的排出侧压力输送至排放点位。本数据集将作为持续性推进的工作持续更新。