3. Assuming a circle watershed with radius 900km has its center at the origin. The rain gauges are located at ARG1(600,400), ARG2(400, -500), ARG3(-300, 500), ARG4(-500,- 600), and ARG5(-700,600). Determine the estimated aerial rainfall using Arithmetic Mean method. ARG1 = 5mm, ARG2 = 12mm, ARG3 = 15mm, AGR4 = 23mm, ARG5 = 25mm

3. Assuming a circle watershed with radius 900km has its center at the origin. The rain gauges are located at ARG1(600,400), ARG2(400, -500), ARG3(-300, 500), ARG4(-500,- 600), and ARG5(-700,600). Determine the estimated aerial rainfall using Arithmetic Mean method. ARG1 = 5mm, ARG2 = 12mm, ARG3 = 15mm, AGR4 = 23mm, ARG5 = 25mm

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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A watershed has a system of three rainfall gauges as shown on the map below. The total storm rainfall depths is: A = 74 mm, B = 67 mm and C = 82 mm. Determine the spatial average rainfall for the network of rainfall gauges using Arithmetic Average and Thiessen Polygon methods. LOkm
Q3: In a catchment area, approximated by a rectangular of coordinates (50, 0), (100, 50), (50, 100), and (0, 50) km, four rainfall stations are situated inside the catchment. The coordinates of the stations and the annual precipitation recorded by the four stations in 2020 are given in Table below. Determine the average annual precipitation on the catchment using Thiessen-polygon method. Station Coordinate Precipitation (cm) 1 (50, 75) 85 2 (75, 50) 135 3 (50, 25) 95 4 (25, 50) 140
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Example4: Cumulative Rainfall depth 10 cm and cumulative runoff 5.8cm Find Ø - index if rainfall according following data : Time (hr.) 1 2 3 4 6 7 8. Rainfall intensity (cm.) 0.4 0.9 1.5 2.3 1.8 1.6 1 0.5
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The incremental rainfall intensity data given in the table below were recorded at a gage located on a small urban watershed. Using a 0.5-hour time step: (a) Plot the rainfall Hyetograph. (b) Determine the total rainfall depth during the storm event. (c) If the runoff depth is 4.65 mm, find the phi- index in mm/ hr. Rainfall intensity data- Time (hr) 0- 0.5- 1.0- 1.5- 2.0- 2.5- 3.0- 3.5- 4.0- 4.5- 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Rainfall Intensity 2 2.5 5 1.5 1 0.5 (mm/hr)
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