Simple download service (Atom) of the dataset: Runoff axes from the MNT RGE at 25 m pitch

Runoff axes: they are translated into preferential flows of stormwater (or hydrographic networks) through which the water flows to the outlet of the outlet.
These axes indicate a direction of flow. They do not accurately describe the flow path and right-of-way, lateral accuracy with tolerance + or — 25 metres X and Y generated by the topographic survey point grid.
Indeed, many factors, buildings, landscaped topographic elements, massing, are likely to change the flow of flows.

The modeling is based on a topographic survey from the numerical field model carried out on an altimeter point mesh consisting of a point grid every 25 metres in X and Y, precision 1 m in Z (the IGN alti database type).