Find the discharge with an risk of being equaled or exceeded

Assignment Help Civil Engineering

Reference no: EM13319424

The USGS has maintained a stream gage on Big Creek at Hill City since 1964. The highest discharge recorded at this gage was 45,000 cfs in 1972. The base-10 logs of the annual peak discharges in cfs for WY 1965-2010 have a mean of 3.678 and a standard deviation of 0.456. Assume that the probability distribution of the annual peak discharges is log-normal (the logs of the annual peak discharges are normally distributed).

a. Find the 50-year discharge.

b. Find the return period of 1972 flood.

c. Find the discharge with an 80% risk of being equaled or exceeded at least once in the next 10 years. (Hint: first find the annual probability of exceedance for this discharge.)

Reference no: EM13319424

Questions Cloud

What is the size of basins assuming equal size dimensions : Assuming that the minimum detention time ( with one train out of service) is 30 s, what is the size of these basins assuming equal size and cubic wetted dimension

Evaluate an organization''s strategic business units : 1. To evaluate an organization's Strategic Business Units (SBU), the Boston Consulting Group developed a portfolio performance framework.

Explain the solubility of magnesium fluoride mgf2 : The solubility of magnesium fluoride, MgF2, in water is 0.016 g/L. What is the solubility (in grams per liter) of magnesium fluoride in 0.013 M sodium fluoride, NaF

Compute the nominal flexural strength of the beam : A rectangular beam made using concrete with f'c = 6000 psi and steel with fy=60000 psi has a width b= 20 in. The concrete modulus of rupture fr=530 psi.

Find the discharge with an risk of being equaled or exceeded : he base-10 logs of the annual peak discharges in cfs for WY 1965-2010 have a mean of 3.678 and a standard deviation of 0.456. Assume that the probability distribution of the annual peak discharges is log-normal

Determine the diameter of the ball : A Ping-Pong ball with mass 1.5 g is attached by a thread to the bottom of a beaker. Determine the diameter of the ball

The demand for reserves depends on income and the price : Banks try to keep their excess reserves at a maximum in order to maximize profits.2. The demand for reserves depends on income and the price level.

Explain major factors that will affect the accuracy of data : List 2 major factors that will affect the accuracy of your data and how you can improve the experiment

Discuss isoquant curves and isoquant maps : What is meant by monopolistic competition? Explain and critically analyse Chamberlin's theory of monopolistic competition.

User Account

All Pages