This paper aims to describe the role of weathering in HRAhydrodynamic properties (hydraulic conductivity, storage)and to present a corpus of efficient operational applicationsthat have been deduced from these genetic concepts. Thispaper builds upon previous review papers (particularlyLachassagne et al. 2011 and 2014b) with up-to-dateresearch/references that complete and reinforce these results.Most of the references cited in these two previous papers arenot cited in this present paper; hence, the interested reader isrecommended to consult them as well.