The Ph.D. course in Environmental and Hydraulic Engineering is a part of the Ph.D. School of Civil Engineering and Architecture. The Ph.D. course consists of two curricula: one in Environmental Engineering and one in Hydraulic Engineering. The curriculum in Environmental Engineering aims at getting an improved understanding of environment-related phenomena and processes in order to provide a theoretical description to be used for the environmental impact assessment and the design of pollution remedial actions and interventions. The approach adopted involves the integration of knowledges and methods from multiple disciplines (geophysics, geotechnics, hydraulic works as well as sanitary and environmental engineering) to allow for a thorough understanding and appropriate analytical description of the environmental processes. Where the equilibrium of bio-geochemical cycles is not altered by anthropic processes, the main focus is preservation of environmental compartments. In the presence of alterations of the environment as a result of human activities, the main focus is to find appropriate remediation alternatives. The Ph.D. graduate in Environmental and Hydraulic Engineering may serve as an useful support to a number of local and national authorities for planning, design and decision-making in the field of environmental protection and reduction of environmental risks. The research activities of the Ph.D. curriculum in Environmental and Hydraulic Engineering are within the topics described below: -Geotechnical issues in land preservation; -Stability of slopes, surface deformations of natural soils; -Forecast and management of floods; -Wastewater treatment and reuse; -Drinking water treatment; -Remediation of contaminated sites; -Chemical and mechanical characterization of waste materials; -Treatment and disposal of solid wastes; -Recovery, reuse and recycling of waste materials; -Atmospheric pollution control; -Water pollution control Hydraulic engineering in Rome has a long historical tradition. Main objectives of the research in this field have been: -design of aqueducts and sewage systems; -prediction of extreme events (e.g. related to Tevere River flood) -rational use of landscapes (e.g. drainage and reclamation). Theoretical and experimental findings in the last two centuries, have allowed to revisit design criteria and to apply fluid mechanics in several fields different from civil engineering. In this sense, hydrology, turbulence, wave propagation, dispersion processes and biological flows become among the most important topics in hydraulic research focused. Moreover, research has been devoted to develop innovative approaches based on the possibility offered by new technologies. This point is at the basis of the curriculum in Hydraulic Engineering. The Ph.D. program activities are organized into two phases: -the first year is mainly devoted to acquire theoretical basis and knowledge of methodologies; a specific research topic is also selected and a tutor assigned to the Ph.D. student. -second and third years are devoted to the development of the specific research project. Ph.D. thesis are based on numerical and/or experimental activity. In the former case, the tutor provides suitable computing resources. The experimental thesis can be carried out in several laboratories, such as the Hydraulic Laboratory and the Environmental Engineering Laboratory, both belonging to the Department of Civil, Building and Environmental Engineering. The technical-scientific competences of these Laboratories are well documented by the wide number of papers published in the best national and international journals and by participation of the authors to scientific conferences, presenting the results of the activities here conducted. The Laboratories are also involved in a number of contracts funded by the European Community or by private or public companies or institutions. The expertise acquired by the Ph.D. in Environmental and Hydraulic Engineering, beside of being fundamental for the Italian University institution, is also of key relevance to provide support to different Authorities, such as Protezione Civile, Autorità di Bacino, Servizi Provinciali di Difesa del Suolo, Agenzie Nazionale e Regionali per la Protezione dell'Ambiente (APAT, ARPA), Servizi Tecnici dello Stato, Aziende di gestione delle risorse idriche, energetiche o dei rifiuti, Enti di ricerca, and many others, in either the planning activities or the management of the most critical situations and contexts. In the last decades, the physical-mathematical modeling has been applied to an increasing number of fields, such as maritime and river hydraulics, hydrology, geotechnics, geophysics, environmental engineering, applied ecology. The larger availability of new instruments and techniques for the acquisition of environmental data and also new specific needs, such as weather forecast, knowledge and prediction of floods and landslide, surface and ground water protection from pollution, waste recycling, and more in general the environment protection, have promoted important development and enhancement of the mathematical modeling. Implementation of mathematical models capable of representing natural phenomena and processes, either chemical, physical or biological, can be done if higher level calculation instruments are available; furthermore, it is strictly required a multidisciplinary approach due to the high complexity of the natural phenomena. Only through an integration of different branches of knowledge it is possible to achieve a comprehensive and effective representation of the interactions between the human activities and the environment. A better understanding of the complex environmental systems is fundamental for the estimation of the risk associated to anthropic processes and for planning the best interventions. The present Ph.D. program integrates all the required competences with the aim to form a person capable of developing new and advanced design and construction methodologies adequate to the modern needs for the environmental protection. The formation acquired through the Doctorate program will allow to design interventions which guarantee a positive environmental balance and contribute to a real requalification of the human degraded environment. The present Ph.D. differs from the other Doctorate programs of the environmental sector because moves from the pure research on the single phenomenon towards a quantitative approach of the complex environmental systems, integrating the following activities: -analysis and study of the natural phenomena; -implementation of physico-mathematical models representing the natural phenomena; -development of tools for model solving and application. Experimental and field data allow to establish limit conditions and to verify and validate the models. The Department of Civil Building and Environmental Engineering which the present Ph.D. belongs to have all the expertise and skills required to ensure the best development of the proposed Ph.D. curricula; it also possesses the experimental and numerical tools and equipment needed to achieve the above mentioned goals fixed by the Ph.D. in Environmental and Hydraulic Engineering.