RiverLine

A subset of Critchlow NationalMap consisting of contextual river features (major rivers and tributaries) represented by line and polyline objects derived by Critchlow from paper Topo maps (mainly LINZ). NB see RiverArea for area objects.

These features indicate the location of rivers. Where significant flow or width and depth of a river is evident these are represented by polygons. Polygon segments are also evident in urban areas to provide a more complete representation. Line networks show rural or highland areas where flow is not significant. Rivers are named where available.