The small irrigation project you manage collects 2,000,000 m³ of water annually in a reservoir. Of this, 20% evaporates from the reservoir surface during the year. Of the remaining water, 25% is lost by evaporation and percolation into the soil during distribution via unlined canals before the water reaches the fields. The water is then applied by furrow irrigation, with averages 20% of the water applied percolating below the crop root zone, 20% running off into collection canals at the low end of the field, and 30% evaporating from the soil surface. By the time of crop harvest, ET has dried the soil to about the same water content it had before irrigation began. Average ET is 7 mm/day for a 180-day irrigation season and crop water-use efficiency averages 1.1 kg of dry matter/m³water transpired. Show calculation, to estimate:

(a) the overall water-use efficiency of the project (kg output/m³water allocated), 

(b) the application water efficiency for the project, 

(c) the field water efficiency for the project, 

(d) the number of hectares that can be irrigated in this project.