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Romania faces floods every 2-3 years, followed by human and animal losses, and large flooded agricultural areas. There are rivers such as Siret, Crisul Repede, Cri?ul Negru, Ialomita with non-rehabilitated areas that have systematically caused damages in the last decade. Based on the latest measurements, the real transport capacity of natural course in high flow conditions and flood risk was estimated. In recent years, after the massive floods recorded in 2005, 2008, 2012, and 2018, there have been uncontrolled de...

In Romania before 1990, over 600 hydro-power plants were built with dams and lateral dikes made of local materials. In order to be completed as soon as possible and with material savings, the protection screens were improperly executed. In many cases there is no continuous protection screen along the dam and in its vicinity, but only from place to place, intermittently. The same problem is with the lateral dikes of the lakes. In these conditions, at the hydroelectric power plant commissioning, the infiltration imm...

Unfortunately, soil is a non-renewable resource that fulfills several vital functions such as food/biomass production, storage, filtration and transformation of mineral or biological substances, source of biodiversity and habitats, etc. Due to the development of industrial activities outside the localities, in many areas the soil is degraded. Among these degradation processes can be mentioned degradation of organic matter, contamination, soli salting, and erosion. This paper is dedicated to the presentation of the...

In recent decades, there have been some changes in the salinity, quality, and average temperature of the Black Sea water. Among other modifications, there was a significant decrease in the dolphin population on the Romanian coast. The decrease in the number of species Tursios trucantus ponticus, Delphinus delphis ponticus, and Phoococena phocoena relicata species found in this area required more detailed research to obtain information about their living conditions and migration. Located at the top of the ecologica...

In many cities from Romania, the water supply systems are very old, sometimes having over 60 years after their commissioning. Under these conditions, permanent large leakages are recorded. They are significant for the operator, influencing its economic performance and operating costs. The water supplier must understand the mechanism of water leaks and their influence on the performance of distribution network. The losses recorded by the system are unused for the purpose for which the supply was made, representing ...

Lakes on the Black Sea coast are the direct result of soil erosion and marine or hydrographic accumulations, consequence of the specific evolution of the nearby sea basin. They depend on the variations in groundwater levels, rainfall or other hydraulic surface sources. In recent decades, as a result of many small, local earthquakes, some deep currents have appeared. Lakes as origins, are of fluvial-marine estuary, lagoons or artificial. Many of them are tourist attractions, due to the specific microclimate establi...