The water balance is defined by the general hydrologic equation, which is basically a statement of the law of conservation of mass applied to the hydrologic cycle. In its simplest form, this equation reads I= O+ AS. where l is total inflow. O is total outflow and AS is change in storage. In a month of 30 days, a lake received an average inflow of 6 m^3/s from surface runoff. In that same period, outfiow from the lake had an average value of 6.5 m^3/s. Further, the lake received a rainfall of 145 mm. evaporation of 6.10 cm and seepage loss was 2.5 cm in that month. The average lake surface is 5000 ha. Compute for the change in water elevation in the lake at the end of that month in centimeters. If it is a LOSS, indicate this by preceding your answer with a negative sign.
The water balance is defined by the general hydrologic equation, which is basically a statement of the law of conservation of mass applied to the hydrologic cycle. In its simplest form, this equation reads I= O+ AS. where l is total inflow. O is total outflow and AS is change in storage. In a month of 30 days, a lake received an average inflow of 6 m^3/s from surface runoff. In that same period, outfiow from the lake had an average value of 6.5 m^3/s. Further, the lake received a rainfall of 145 mm. evaporation of 6.10 cm and seepage loss was 2.5 cm in that month. The average lake surface is 5000 ha. Compute for the change in water elevation in the lake at the end of that month in centimeters. If it is a LOSS, indicate this by preceding your answer with a negative sign.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The water balance is defined by the general hydrologic equation, which is
basically a statement of the law of conservation of mass applied to the
hydrologic cycle. In its simplest form, this equation reads I= O + AS.
where l is total inflow. O is total outfiow and AS is change in storage. In a
month of 30 days, a lake received an average inflow of 6 m^3/s from
surface runoff. In that same period, outfilow from the lake had an average
value of 6.5 m^3/s. Further, the lake received a rainfall of 145 mm.
evaporation of 6.10 cm and seepage loss was 2.5 cm in that month. The
average lake surface is 5000 ha. Compute for the change in water
elevation in the lake at the end of that month in centimeters. If it is a
LOSS, indicate this by preceding your answer with a negative sign. "
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