Waterway — Drainage lines

This dataset includes waterway drainage lines within the Brisbane City Council area represented by their centrelines. Waterways consist of a defined channel with a bed and banks that carry constant or intermittent flows of surface water. The land area draining to a waterway is defined as its catchment. These were modelled in 1994 to represent the length of waterways. To achieve a linear network, drainage lines are generated through waterbodies to connect upstream and downstream waterways. They do not represent the natural centreline.本数据集收录布里斯班市议会（Brisbane City Council）辖区内以中心线表征的水道排水线。水道指设有河床与岸堤、可承载持续或间歇性地表径流的明确渠槽。汇入单条水道的陆域范围被定义为该水道的集水区（catchment）。该数据集于1994年通过建模生成，用于表征区域内水道的总长度。为构建线性水系网络，本数据集通过水体（waterbody）生成排水线以衔接上下游水道，此类排水线并非自然河道的天然中心线。