Occurrence and management of water resources in the hilly territories of Central Piedmont (North-Western Italy)

In the paper, a hydrologic balance of the examined region finalised to the assessment of the water resources has been carried out. Starting from meteorological data of Central Piedmont weather stations, the mean annual isohyetal map has been drawn in order to evaluate the average rainfall in the area. Evapotranspiration has been calculate using different empirical methods, and, by difference, the water resources have been estimated. From the water balance, the examined territories result not too rich in water resources. The subdivision between superficial and underground water resources has finally realized by means of runoff coefficients depending upon the land use, soil type and slope of the watershed. An overview on the water supply of the hills municipalities has been provided.