Water flow routes over land (Urban Forest)

These flow routes are derived from the 2008 DEM surface using ESRI Spatial Analyst stream order tool with STRAHLER ordering. The GRID_CODE field represents stream order. Lines with no tributaries are assigned an order of one and are referred to as first order. When two first-order links intersect, the downslope link is assigned an order of two. When two second-order links intersect, the downslope link is assigned an order of three and so on. This was undertaken as part of the urbanforest program, the shapefile excludes a portion of Kensington that became part of City of Melbourne after this data was processed.

本数据集中的水流路径是通过将2008年DEM地表数据应用于ESRI空间分析师水系排序工具并采用STRAHLER排序法所得。GRID_CODE字段用于表示水系等级。无支流的线段被赋予一级等级，并称为一级流。当两个一级流交汇时，下坡方向的流段被赋予二级等级。当两个二级流交汇时，下坡方向的流段被赋予三级等级，以此类推。此工作作为城市森林计划的一部分进行，该shapefile排除了在数据处理后成为墨尔本城市一部分的肯辛顿区域。