Kifle Woldearegay Woldemariam is an Associate Professor at Mekelle University (MU), Ethiopia. He worked at the Ethiopian Geological Survey before joining MU in 1998. He has been involved in teaching at undergraduate and post-graduate (MSc and PhD) levels in different universities in Ethiopia (Mekelle; Addis Ababa; Addis Ababa Science and Technology; Jimma; Hawassa; and Bahir Dar). He had also assumed different administrative positions (department to faculty levels) and in 2006-2008 he worked as Vice President for Academic and Research of Aksum University. He has been involved in different multi-disciplinary research and development projects, among others: (a) Study, design and construction of different water harvesting schemes such as dams (small to large size), small-scale water harvesting (ponds, check-dams, sub-surface dams, etc), river diversion weirs, spate systems, groundwater wells etc, (b) Evaluation of hydrological effects of natural resources management/landscape restorations, (c) Evaluation of the efficiency and sustainability of irrigation practices/systems, (d) Water harvesting from roads and road catchments, (e) Evaluations of human-landscape-infrastructure interactions with implications to sustainable infrastructural development in different terrains and environments, (f) Evaluations and management/mitigation of multi-hazards (landslides, flooding, erosion, siltation, etc), and (g) Water and sanitation challenges and opportunities for reuse/circularity.