I need the answer as soon as possible MATERIALS AND METHOD1. Tables below show data of stream flow and rainfall observed for a particular watershedwith an area of approximately 9552676.06 ff. Assume a baseflow of 75 cfs.2. With this data, generate a unit hydrograph that can be used to estimate the stream flow forall rainfall amount.Time Observed Hydrographcfs7575110205Hr2330552806.2057.1308.75Gross Precipitationin/h1.00TimeHr0-11-21.803.000.752-33-43. Determine the following:a. Direct runoff hydrographb. Volume of direct runoffc. Effective rainfalld. Unit hydrographf 0- indexg Duration of effectiverainfall (duration of theunit hydrograph)e. Volume losses

Area= 9552676.06 ft2 Base flow= 75 cfs

Answered: MATERIALS AND METHOD 1. Tables below…

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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Problem 4: Use the following table to determine the areal average rainfall using (1) Arithmetic-mean method Area Rainfall represented by station (mi?) Station depth (in) 3.1 4.2 4.5 5.1 5.5 3.5 3.2 5.5 4.3 4.8 m4534 ABCDE
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 tog 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
Q1. Using the data given, estimate precipitation depth that has fallen on the entire watershed. Precipitation (mm) Polygon Thiessen area (cm2) Station A 20 112.25 13 53.5 C 18.3 120.0 12.5 62.5 E 10 119.0 F 5.8 144.0 G 6.7 72.0 14.8 130.0 13.9 62.5 11 85.0 K 5.5 110.0 3.7 40.0 WE PRODUCE PROFESSIONALS With Wisdom, W6 EY82re GUTHM Q2. Lines delineating a particular measurement are drawn within the watershed. Precipitation data and the area in between each isohyet are shown in the table below. Estimate the average precipitation within this watershed. Isohyetal line (cm) Area (cm?) 30 - 40 40 - 50 50 - 60 60 - 70 70 - 80 80 - 90 90-100 32 162 155 92 228 120 65
1. Tables below show data of stream flow and rainfall observed for a particular watershed with an area of approximately 9552676.06 ft. Assume a baseflow of 75 cfs. 2. With this data, generate a unit hydrograph that can be used to estimate the stream flow for all rainfall amount. Time Gross Precipitation Observed Hydrograph cfs 75 Time Hr in/h Hr 0-1 1.00 1.80 1-2 1 75 2-3 3.00 2 110 3-4 0.75 205 305 3 4 280 205 7 130 8 75
ARAL MEAN PRECIPITATION Exercise 4 1. Drainage areas within each of the isohyet lines for a storm are tabulated for a watershed. Use the isohyet method to determine the average precipitation depth within the basin for the storrn. Make a conceptual sketch. Isohyetal interval (m) Area (m2) 0-2 2-4 4-6 6-8 2700 1900 1000 0
Determine the following:What is Rainfall-Run off Relation?Definition of HydrographWhat is a Hydrograph Separation?What is a Unit Hydrograph?Estimation of Discharge using HydrographWhat is Rational Formula and SCS Curve?Please type it in here instead of writing it on a piece of paper
What is the difference between a streamflow hydrograph and a unit hydrograph? The UH is a special case of a streamflow hydrograph in which the rainfall depth is equal to 1 unit They are the same. The UH is a special case of a streamflow hydrograph in which the surface runoff is equal to 1 unit The streamflow hydrograph is caused by total rainfall, while the unit hydrograph is from the same rainfall, less losses.
A-One of four monthly reading rain gages on a catchment area develops a fault in a month when the other three gages record, respectively (37, 43, 51)mm. If the average annual precipitation of these three gages are (726, 752, 840) mm, respectively and (694mm) of the broken gage. Estimate the missing monthly precipitation at the later station. B-On a certain river, the following data obtained by stream gage: Water stage(m) Flow rate(cumecs) Main staff Auxiliary staff 122 121.5 400 122 120.5 680 Estimate the flow rate when the main staff read (122m) and the auxiliary staff read (121.1m)? C-The following table represents the relation between the recorded discharges and the water levels. Estimate the following relation and find Q when H=15m. Q=a (H-2) b 10 20 40 100 Q(m³/s) H(m) 5 7 9 10
Use the following table consisting of 2 hour Unit Hydrograph with constant rainfall intensity of 0.5 in/hr which is required to be converted to 3 hour Unit Hydrograph using S-hydrograph method.Also, draw the S hydrograph and 3 hour Unit Hydrograph. Time(hr) 0 Q(cfs) 0 1 200 2 500 3 400 4 200 5 100 6 0
A watershed covering 28.16 mi2 has a system of seven rainfall gages, as shown on the map in the Figure. Using the total storm rainfall depths given in the accompanying table, determine the average rainfall over the watershed using: (a) arithmetic averaging and (b) the Thiessen polygon method. Gage ABCDEFG А с P₁ (in.) 5.13 6.74 9.00 6.01 5.56 4.98 4.55 A₁ (mi²) 1.74 6.70 1.77 13.02 0.83 2.68 1.42 28.16 B. . E 1 in. = 3.9 mi .F . G
Prob.4. There are four rain gauge stations existing in the catchment a river. The average annual rainfall values at these stations are 800, 620. 400 and 600 mm respectively - (i) Determine the optimum number of rain gauges in the catchment, if it is desired to limit the error in the mean value of rainfall in the catchment to 10%. (ii) How many more gauges will then be required to be installed ? of 100 L 600
Q1. Using the data given, estimate precipitation depth that has fallen on the entire watershed. Polygon Thiessen area (cm?) Station Precipitation (mm) A 20 112.25 В 13 53.5 18.3 120.0 12.5 62.5 E 10 119.0 F 5.8 144.0 6.7 72.0 14.8 130.0 13.9 62.5 11 85.0 K 5.5 110.0 3.7 40.0

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