A lake has a surface area of 70.8 ha. Through the month of July, the
water inflow was 1.5 m3/s. The dam regulated the outflow from the lake
to be 1.25 m3/s. The rainfall precipitation recorded through the month
of July was 7.65 cm, and the lake storage volume increased by 650,000
m3. Assume no water infiltrates out of the bottom of the lake, estimate
the evaporation volume (m3) and the evaporation rate (cm). Draw a plan
sketch.