Isocote lines of the flood prevention plan (PPRI) of the river “La Vienne” upstream, area of Availles-Limouzine in Valdivian
Description
The isocote lines (curves of altitude levels reached by the waters during the centennial flooding) constitute a series of geographical data produced as part of the Upstream Vienna Flood Risk Prevention Plan.
Isocotes are reported on hazard maps and reference ratings on regulatory maps. The reference rating is the isocote plus 20 cm. This reference rating is applied during certain adjustments. That is, at any point in the flood zone defined on the hazard map, when a development is carried out, the rating to be respected for the development is the reference rating. This can be calculated at any point in the flood zone, by linear interpolation between the different isocote lines.
Resources
| Name |
Format |
Description |
Link |