Q4: Following is shown map of catchment having 12 rainfall stations. Find the Average Precipitation over the whole Catchment. Solve the interior square by Isohyetal method and remaining with Theisen Polygan Method. Y km x4 Km Anea = Pi='45 mm 2Kmx 2km Pira larmm Peo 7フmm 3Km Py- Gomm P So mom Ps 65 mm Prz 75am Piss n 09 09

Q4: Following is shown map of catchment having 12 rainfall stations. Find the Average Precipitation over the whole Catchment. Solve the interior square by Isohyetal method and remaining with Theisen Polygan Method. Y km x4 Km Anea = Pi='45 mm 2Kmx 2km Pira larmm Peo 7フmm 3Km Py- Gomm P So mom Ps 65 mm Prz 75am Piss n 09 09

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 catchment with an area A = 85 km^2, has four rainfall gauges (P1 – P4) according to the figure. Use the rainfall data in the table to determine the areal rainfall over the catchment. a.Use the arithmetic averaging method to calculate areal rainfall. b.Use the Thiessen method to calculate areal rainfall.
Below is a square basin with a single length of 3180 meters. Watershed8 hours for 5 stations at their corners (a, B, C, D) and at their full midpoint (E)Hyetographs of rainfall Figure 4. is also given. Average rainfall of the basin based on information givencalculate its height using the Thiessen method.(T=159)
A catchment with an area A = 85 km^2, has four rainfall gauges (P1 – P4) according to the figure. Use the rainfall data in the table to determine the areal rainfall over the catchment. Use the arithmetic averaging method to calculate areal rainfall. Use the Thiessen method to calculate areal rainfall.
Station Rainfall (mm) Annual (mm) ДХ (m) ΔΥ (m) Area (m²) A 42 500 10 25 1500 30 480 15 30 2000 50 558 24 30 830 526 500 E 35 590 40 19 1200 Using a rainfall of 386 mm for rain gauge Station D, determine the average depth of rainfall that fell for the watershed using the arithmetic average, and Thiessen polygon method. The areas for the Thiessen polygon method are given in the table above for each station. B.
Problem 2: A square shape catchment with 100 km² area has five raingauge stations at the center of the catchment (A) and center of each side of basin (B, C, D and E). Each station has certain rainfall recorded which are given in Table below. Compute the mean precipitation applying Thiessen-mean method. Station A B с D E P (mm) 24 20 30 35 D Ud Å E B 5 15
2. A catchment area has a rectangular shape with the following coordinates: (10,10), (10,50), (90,50) and (90,10). The coordinates of SIX rain gages and their average annual precipitations are given below. Find the average precipitation by using a.) Arithmetic Mean Method b.) Thiessen Polygon Method. Sta. No. 3 4 5 6 Coord. (10,10) (30,30) (10,50) (60,50) (80,30) (60,10) Prec. 110 100 100 95 85 105 (mm.)
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Calculate the 1-hour 50-year rainfall estimate given that annual station data records have an average of 56mm and standard deviation of 4.12. Xt = Xav + Kt * S
Hydrology Subject: Using Arithmetic Method, Thiesen Polygon Method and Isohyets Method, Find average rainfall over a catchment. The data is
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9.