Is relative humidity, in general, highest in the afternoon or the morning?

What is the evaporation rate (in mm/day) for a water body with net radiation = 200 W/m² and air temperature = 25 deg C. Use the Priestley Taylor equation.

What is the relative humidity (in percent) if saturated vapour pressure is 4.2 kPA and the actual vapour pressure is 2.94 kPa?

Which of these values would be a reasonable pan coefficient for a class A pan?

Water evaporates from a reservoir at a rate of 5 mm/day.

Assume:

• Density of water = 1000 kg/m³

• Latent heat of vaporization, Lv=2.45×106L_v = 2.45 \times 10^6J/kg

Calculate the energy flux (W/m²) required to sustain this evaporation rate.

If the runoff hydrograph in the figure results from a total rainfall of 110 mm and the catchment storage is linear, what is the peak flow when the rainfall is 220 mm?

Estimate the time that initial losses in the catchment have been satisfied based on the following hydrograph:

What is the 1% AEP year ARI, 6 hour duration rainfall intensity (mm/h)?

What is the correct effective rainfall hyetograph given IL = 4 mm and CL = 4 mm/hr and the following total rainfall hyetograph?