4. Rainfall values observed at different points on a watershed (12.5 km?) are shown in Figure 4.14. Compute the mean rainfall using the Thiessen method. 80 tos 105 11 90 I 10 12 13 Scale: 0.5 1.0 km FIGURE 4.14 Thiessen polygon method for computing the mean areal rainfall for Problem 4. 1.5842 0.1697 1.4208 0.9565 1.3765 1.2288 1.6282 0.9001 7 1.8949 0.3467 0.4347 10 0.1961 0.3617 12 13 Scale: 00.5 1.0km

4. Rainfall values observed at different points on a watershed (12.5 km?) are shown in Figure 4.14. Compute the mean rainfall using the Thiessen method. 80 tos 105 11 90 I 10 12 13 Scale: 0.5 1.0 km FIGURE 4.14 Thiessen polygon method for computing the mean areal rainfall for Problem 4. 1.5842 0.1697 1.4208 0.9565 1.3765 1.2288 1.6282 0.9001 7 1.8949 0.3467 0.4347 10 0.1961 0.3617 12 13 Scale: 00.5 1.0km

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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For the basin shown in Fig. 1, the normal annual rainfall depths recorded and the isohyetals are given. Determine the optimum number of rain-gauge stations to be established in the basin if it is desired to limit the error in the mean value of rainfall to 10%. Indicate how you are going to distribute the additional rain-gauge stations required if any. What is the percentage accuracy of the existing network in the estimation of the average depth of rainfall over the basin? The area between the isohyetals are given below:
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