2) Station and potential evapotranspiration in a watershed with an area of abc km and a field in the soil of 93 mm, is given in the Table below. The soil is initially fully wet (soilwater at the city) Month January February March April May June July August September October November December Precipitation (mm) Potential evapotranspiration (mm) 59 69 69 63 79 73 53 59 59 83 79 89 13 19 39 59 89 193 193 139 89 59 29 19 a) Calculate the actual the soil water (soil moisture) at the end of the month evapotranspiration during the month (in mm), the runoff during the month (in mm) and the average monthly flow rate at the watershed outlet (in m/s). Produce a scaled drawing for each of them on a millimetric paper. (It is sufficient to sketch) b) Conduct the same set of calculations for a decrease of 10% in precipitation. Produce a scaled drawing for each result (the actual the soil water (soil moisture) at the end of the month, evapotranspiration during the month (in mm), the runoff during the month (in mm) and the average monthly flow rate at the watershed outlet (in m/s)) on a millimetric paper. (It is sufficient to sketch) c) Conduct the same set of calculations an increase of 10% in potential evapotranspiration. Produce a scaled drawing for each result (the actual the soil water (soil moisture) at the end of the month, evapotranspiration during the month (in mm), the runoff during the month (in mm) and the average monthly flow rate at the watershed outlet (in m/s)) on a millimetric paper. (It is sufficient to sketch) d) Conduct the same set of calculations for a decrease of 10% in precipitation and increase of 10% in potential evapotranspiration. Produce a scaled drawing for each result (the actual the soil water (soil moisture) at the end of the month, evapotranspiration duringthe month (in mm), the runoff during the month (in mm) and the average monthly flow rate at the watershed outlet (in m/s)) on a millimetric paper. (It is sufficient to sketch) e) Write a small report comparing and discussing the results for different seasons.