Maximum rainfall and runoff depths (in cm) of a catchment spanning a period of 21 years are given below. Analyze the data to: Year Runoff cm 54 45 51 41 21 32 66 25 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 Rain cm 118 98 112 97 84 91 138 89 104 80 97 75 107 75 93 129 153 92 84 121 95 42 11 32 17 32 15 28 48 76 27 18 52 26 1) Calculate the exceedance probability, p and recurrence interval, Tp (years) of the observed data using Weibull distribution p = m/(n+1). 2) Develop a regression equation to estimate the return period for a given runoff and rainfall value. 3) Estimate the runoff and rainfall depth for 5, 10, 25, 100 and 500 return periods using the equations derived from question #2. NB Report your answers in three significant digits.

Maximum rainfall and runoff depths (in cm) of a catchment spanning a period of 21 years are given below. Analyze the data to: Year Runoff cm 54 45 51 41 21 32 66 25 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 Rain cm 118 98 112 97 84 91 138 89 104 80 97 75 107 75 93 129 153 92 84 121 95 42 11 32 17 32 15 28 48 76 27 18 52 26 1) Calculate the exceedance probability, p and recurrence interval, Tp (years) of the observed data using Weibull distribution p = m/(n+1). 2) Develop a regression equation to estimate the return period for a given runoff and rainfall value. 3) Estimate the runoff and rainfall depth for 5, 10, 25, 100 and 500 return periods using the equations derived from question #2. NB Report your answers in three significant digits.

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

hydrology engineering
Subject water system design
3 and 4 only thanks!
What volume equalization basin is required to even outflow variations in the following data? Assume the flows are hourly averages. Time 0000 0100 0200 0300 0400 0500 0600 0700 0800 0900 1000 1100 Flow (m³/s) 0.0875 0.0700 0.0525 0.0414 0.0334 0.0318 0.0382 0.0653 0.113 0.131 0.135 0.137 Time 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 Flow (m³/s) 0.135 0.129 0.123 0.111 0.103 0.104 0.105 0.116 0.127 0.128 0.121 0.110
Subject: ( Hydrology and water Resources management )
The eight-hour unit hydrograph (UH) of a watershed having a drainage area equal to 334.08 km² is as follows: Time (h) UH (cms/cm) 0 0 8 16 24 32 40 48 2.40 17.45 45.30 24.90 12.30 8.75 56 4.90 For a storm over the watershed having excess rainfall of 12 cm for the first eight hours and 30 cm for the second eight hours, and assuming a constant baseflow of 150 cms, determine the following: a) the total direct runoff hydrograph (DRH, m³/s), b) the total volume of direct runoff hydrograph (m²), c) the depth of direct runoff hydrograph (cm),
Subject water resource
I need short answers of each part plz
Find area precipitation by isohyetal method for a certain catchment area given the following data
Q. 7
hydrology engineering
Subject water system design