Researches regarding the flood waves attenuation through the Taga Marea accumulation, Fizes Mijlociu hydrographical basin, Cluj county [articol]

Abstract

The passage of the flood wave through the accumulation leads to their attenuation, creating in the downhill sections of the barrage, much smaller attenuated flow rates and levels than the outrush ones, which lead to the important diminishing of the potential damage that could occur in the absence of those works on the water courses. In addition, the existence of those accumulations leads to the much more reduced dimensioning of hydrotechnical works in the downhill because of the attenuations in the lakes. Through the attenuation of flood waves in these accumulations, both the direct and indirect damages are avoided : the direct damages representing the value of the destructions or damages of the affected objectives and the value of the expenses made with the intervention operations for defending the endangering, evacuation and population help areas; indirect damages given by the losses registered in the economy. In this paper talking about from accumulations with piscicultural role in accumulations used for sportive fishing, thus managing the significant corroboration of the minimum piscicultural exploitation level and implicitly increasing the attenuation volumes. As a result of the transiting of the flood wave through Taga Mare accumulation, the effluent flow rate when ensuring the calculation have values of 25.69 m3/s compared to the calculation affluent flow rate of 31.3 m3/s, achieving an attenuation coefficient of 0.179.In addition, the effluent flow rate in the case of insuring the checking is of 43.671 m3/s compared to the affluent debit of 51 m3/s, achieving a value of the attenuation coefficient of 0.144.