1991 Volume 35 Pages 75-80
To make a distributed rainfall-runoff model, it is very important to build a model of topographic surface of a basin which takes account of the direction of water flow.
The objective of this work is to represent the landscapes numerically using Triangular Irregular Network Degital Elevation Model data structure. Landscapes are modelled as a set of contiguous non-overlapping triangular facets whose vertices are made up by points on regular grids and points on river segments. Those triangular facets are subdivided, if needed, so that each of them has only one edge through which water flows out.
