1. An imaginary lake has an average depth of 107 m. The surface area of the lake is 8370 km2. The lake flows out at an inconsequential rate. If the evaporation rate is 1100mm/yr, calculate the residence time of water in the lake (in years).
2. The land area that drains into the lake is ~58,000 km2, over which the average precipitation rate is about 700mm/yr. Given this information, what residence time would you calculate for the lake?