Question

A lake whose surface area could be approximated to be circular
with a diameter of 2750 m has a water surface elevation of 128.917m
at the beginning of the month of August.During that month the lake
received a streamflow of 172 mm from a catchment of 6225 ha. The
average precipitation during the month was 181 mm, and the average
rate of evaporation was to be 5mm/d. The monthly seepage was 30 mm.
The average outflow from the lake during the month was 3.67
m^{3}/s. Compute the water surface elevation at the end of
the month and the change in storage (in m^{3}).

Marks:9

Answer #1

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