Hydrology question: a small lake had an increase of 25000 cubic ft. of water in the end of 2006 since the beginning of the year. the watershed which provides water to the lake has an area of 2 sq. km. there was a total rainfall of 20 inch in that time period of 2005 to 2006. there was a total interception of 18987 cu. m. average stream flow in the watershed in the year 2006 was 250 cfd. there was negligible infiltration that year. however, there was a quite bit of depression storage loss in that year. the amount was 5500 cu. m. how much was the total loss of water through evapo-transpiration?