Simple download service (Atom) of the dataset: Runoff axes from the MNT RGE at 25 m pitch
Description
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).
Resources
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http://atom.geo-ide.developpement-durable.gouv.fr/atomMetadata/GetResourceDescription?id=145394f7-905b-49d7-81d0-fa0e8414c053 |