Study on the hidroclimatic parameters in the upperbasin of the Târgului River and their environmental impact.

The evaluation of the hydrological parameters allows the elaboration of the hydrological forecasts and the identification of the risks arising from flash flood, construction size and improvement of the hydrotechnical buildings. In the upper basin of the Târgului River, annual precipitation ranges from 429.6 mm to 1209.3 mm, the lowest amounts being recorded in February (36.9 mm) and highest in June (115.8 mm). The mean annual runoff was recorded at the Voina hydrometric station, i.e. 2.05 m 3 /s, and the highest reached was 75. 0 m 3 /s. Between 1970 and 2009, 181 flash floods occurred, of which 7 were major (4%), with flow rates above 38 m 3 /s, exceeding the attention share. Probabilistic calculations show that every 100 years the maximum flow rate can reach 99.10 m