The catchment of Prut River is located in an area with many natural and anthropogenic pressures. The various uses of water, as well as the fact that the river corresponds to the border with Moldova Republic makes the monitoring of water quality a necessity for the authorities. The monitoring of the water quality of Prut River in 2008 was carried out as a complex and necessary process in order to establish the qualitative state of the waters corp. Four sections of the river were monitored considering ecological and chemical indicators. In accordance with these results, it was adopted an efficient strategy for the protection of the water quality.

The catchment of Prut River is located in an area with many natural and anthropogenic pressures. The various uses of water, as well as the fact that the river corresponds to the border with Moldova Republic makes the monitoring of water quality a necessity for the authorities. The monitoring of the water quality of Prut River in 2008 was carried out as a complex and necessary process in order to establish the qualitative state of the waters corp. Four sections of the river were monitored considering ecological and chemical indicators. In accordance with these results, it was adopted an efficient strategy for the protection of the water quality.

The paper approaches some aspects on simulation and monitoring systems of the discharges of wastewaters in surface waters, so that their quality could be rated and the evolution of the pollutant concentration controlled. Using these tools, the determination of the pollutant load in the stream water is possible. In order to solve these issues, it is necessary to know very well the affected area and have the possibility to acquire data on the hydraulic parameters of the water streams. This would allow the appropriate decision to be taken regarding the maximum concentrations reached during the accidental pollutants discharges into rivers, as well as the possibility to dilute or recover the pollutant in order to bound the pollution wave distance and to warn in short time the users from downstream.

Climate change is one of the major challenges of our century and becomes a major research topic. Obtaining rapid provision of information about dangerous hydro meteorological phenomena becomes a necessity. This paper presents a device able to provide information on rainfall characteristics and vertical development of clouds, which generates precipitations to effectively manage the hazardous phenomena they generate.

Increased intensity of precipitation events in a future climate provide result in a number of regions with improved, more detailed models. Many mathematical models include this part of hydrological cycle with implications regarding the climatic changes. The case study shows aspects regarding the climatic changes and its impact on designing the hydraulic structures and the hydrotechnical constructions behaviour in the case of extreme hydro-meteorological phenomena.