- Figure 1 Shows The Position Of Six Rain Gauges Within A Catchment The Catchment Boundary Is Shown With The Thick Line 1 (109.68 KiB) Viewed 16 times
area rainfall is 15.0 mm , calculate the ratio of runoff
to precipitation, the evapotranspiration rate (mm/day)
and se this information to calculate the final degree of soil
moisture saturation at the end of the day
I dont know what to do and the question is a little
confusing
Figure 1 shows the position of six rain gauges within a catchment. The catchment boundary is shown with the thick line. Each square has an area of 1 km². Each square is 1km² Rainfall gauge 3 2, 5 1km 6 Catchment Boundary 1km Figure 1: Catchment map and location of rain gauges. On a particular day, the total rainfall at each gauge was recorded as: Gauge Rainfall (mm) 1 14 2 15 3 10 4 12 5 20 6 10 The average discharge for that day measured by a stream gauge located at the outlet of catchment was 1 m³/s. For the same day, the mean daily latent heat of evaporation for the catchment was measured as 10 MJ m2. The porosity of the soil is 0.4. At the beginning of that day, the initial degree of saturation (S) in the active root zone, which is 0.30m deep, was 0.25. The latent heat of vaporization, Av, is 2.5 MJ kg-¹. There is negligible canopy interception and percolation below the active root zone. For the day in question, answer the following: 14