Dear members of the Watershed Management group, I am delighted to announce my recent nomination as Expert Contributor in the group. I wish to thank TWN for the confidence placed on me. About me: civil engineer with almost 20 years’ experience in the modelling of watersheds, including both surface and groundwater resources and, especially, their interactions. I will certainly profit this kind invitation and I hope I will be up to scratch. I look forward to hearing from you and reading your new posts, questions, etc. I profit this quick post to cast the first stone: how important is the joint (coupled) modelling of surface water and ground water in your strategy for watershed management? Regards, Andres