Example 4. Following are the ordinates of a storm hydrograph of a river draining a catchment area of 423 km² due to a 6-h isolated storm. Derive the ordinates o fa 6-h unit hydrograph for the catchment Time from start of storm (h) 6. 12 18 24 30 36 42 48 Discharge (m³/s) 30 10 10 87.5 115.5 102.5 85.0 71.0 59.0 47.5 Time from start of storm (h) 54 60 66 72 78 84 90 96 102 Discharge (m³/s) 39.0 31.5 26.0 21.5 17.5 15.0 12.5 12.0 12.0

Example 4. Following are the ordinates of a storm hydrograph of a river draining a catchment area of 423 km² due to a 6-h isolated storm. Derive the ordinates o fa 6-h unit hydrograph for the catchment Time from start of storm (h) 6. 12 18 24 30 36 42 48 Discharge (m³/s) 30 10 10 87.5 115.5 102.5 85.0 71.0 59.0 47.5 Time from start of storm (h) 54 60 66 72 78 84 90 96 102 Discharge (m³/s) 39.0 31.5 26.0 21.5 17.5 15.0 12.5 12.0 12.0

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

The average rainfall values over a catchment in three successive 2-hour intervals are 3, 5 and 2 cm, respectively. The index for the catchment is taken as 0.2 cm/hour. The 2 hour unit hydrograph ordinates are given in table below. Time in hrs. Discharge m 0 2 4 m³/sec 0 10 40 6 14 16 70 50 20 10 6 0 Base flow can be taken as 7 m³/sec at the beginning of the storm linearly increasing to 9 m³/sec at 10 Hrs. after the beginning and then linearly decreasing to 8 m³/sec at 4 Hrs. after the end of direct run off. Compute the resultant flood hydrograph. 8 10 12
Sub: Hydrology
.
I need the answer to the question in Engineering Hydrology
Q3: A) The recorded discharges and stages at the hydrological station on a channel is given below. Estimate accurately the discharge when the stage is 20 m? Discharge, m³/s Stage, m 0.0 3 4.2 5 12.0 7 40.5 12 54.7 14 70.3 16 154.8 25
3. The inflow hydrograph in the table is for flows observed at a river cross-section over two days. Your job is to develop the outflow hydrograph for the next cross-section 3 mi downstream using Muskingum K = 11 hr and X = 0.13. Plot both hydrographs on a single graph. Time (hr) Inflow (cfs) Outflow (cfs) 100 100 6. 300 12 380 18 500 24 400 30 310 230 100 36 42
: Given below are the flows from a storm of Ihr duration on a stream with a drainage area of 1000 km². Assume a constant base flow of 800m³/s. Drive the ordinates of a 2hr UH for the basin and state its peak. Time (hr) 1 2 3 4 5 6 7 8 9 Flow (m³/s) 800 900 1000 2000 1800 1600 1300 1000 800
Given below are ordinates of hydrograph, separate the base flow from direct runoff flow by using the fixed base method, and then find the unit hydrograph (UH) with all graphics. Note: using basin area 8000 km² Time (day) 0 1 2 3 4 5 6 7 8 9 10 11 12 Flow (m³/s) 200 180 180 220 300 500 450 420 350 300 220 180 160
Route the inflow hydrograph tabulated in the following table through a river reach for which x = 0.2 and K = 2 days for only the first three days. Use a routing period At=1 day and assume I = O for the first day. Time (day) 1 2 3 Inflow (cfs) 4000 7000 11000 :
HYDROLOGY CIVIL ENGINEERING
HYDROLOGY CIVIL ENGINEERING
Q2/ Given below are ordinates of hydrograph, separate the base flow from direct runoff flow by using the fixed base method, and then find the unit hydrograph (UH) with all graphics. Note: using basin area 8000 km? Time (day) Flow (m'/s) 0. 1 3 4 6. 450 7 8 10 11 12 200 180 180 220 300 500 420 350 300 220 180 160