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 + ΔS, where I is total inflow, O is total outflow and ΔS is change in storage. A catchment area of 140 km^2 received 120 cm of rainfall a year. At the outlet of the catchment the flow in the stream draining the catchment was found to have an average rate of 2 m^3/s for 3 months, 3 m^3/s for 6 months and 5 m^3/s for 3 months. What would be the amount of water not available to runoff (for the year) due to the combined effect of infiltration, evaporation and transpiration?
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 + ΔS, where I is total inflow, O is total outflow and ΔS is change in storage. A catchment area of 140 km^2 received 120 cm of rainfall a year. At the outlet of the catchment the flow in the stream draining the catchment was found to have an average rate of 2 m^3/s for 3 months, 3 m^3/s for 6 months and 5 m^3/s for 3 months. What would be the amount of water not available to runoff (for the year) due to the combined effect of infiltration, evaporation and transpiration?
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