Rate of flooring, fractionation and density of water bodies in Loire-Bretagne

Calculation of the rate of d' staging which is the ratio of the sum of the drop heights of obstacles to #x27; flow (ROE) on the natural elevation of the main drains of mass d' water (elagated from their Strahler rank 1). The fractionation rate results from the same treatment of the sum of the drop heights, this time divided by the length of the section. Density is the sum of the structures divided by the length of the main drains of mass d'water. __Origin__ This layer is produced from the Referral of Obstacles to l' Flow (ROE) in its version of July 8, 2016. A selection of the works was made in order to exclude frozen, longitudinal and n' inducing more drop heights. The structures without the height of a given fall have their value supplemented by the average of the drop heights per hydroecoregion type 2 (HER2). For the rate d' flooring only, Strahler ranks equal to 1 are removed. __Partner organisations__ AFB — DR Nouvelle-Aquitaine, AFB [See this page on geo.data.gouv.fr](https://geo.data.gouv.fr/fr/datasets/f9e9031841cc49221661c50a72baaf7a8587aa38)