DDT 70 — Aleas clay gonlement in Haute-Saône in 2019
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Knowledge document updated following the BRGM study report (public document) and positioning of hazard zones in shapefiles format. Date of update of the data in 2019. No occurrence — Geological risks. The phenomenon of dewatering of clay soils during pronounced and/or lasting drought causing deformations of the soil surface (differentiated cutters). It can be followed by swelling phenomena as initial hydrogeological conditions recover or more rarely creep with softening.
