Determine the 2-year peak discharge prior to development

Reference no: EM13304967

A development is being planned within a 250-acre watershed. The present land use is 120 acres of pasture, with soil type B(CN=61), and the rest soil type D (CN=80). The Tc is 54 min. and the 2-year, 24-hour storm depth is 4 in. The surface are of farm ponds is 1.0%. Determine the 2-year peak discharge prior to development using the TR-55 method. Assume Type II rainfall.

Reference no: EM13304967

Questions Cloud

Compare the performance and risk of investment : Find the mean, median, range and standard deviation for the 2005 returns and estimate with 99% confidence the average order in the city.

Estimate the minimum do and the critical location in river : If the ultimate BOD of the mixed river water is 30mg/L, the rate constant for BOD at 20ºC is 0.6d-1, the reaeration rate constant at 20ºC is 0.8d-1, and the removal of BOD by sedimentation can be neglected

Explain how to determine the normal stress in rod ad : If the temperature of rod CF is increased by 10 degrees C and that of rod BC is decreassed by 40 degrees C, determine the normal stress in rod AD. The rods are two meters long.

What is the torque being exerted by this force : A uniform disk of mass M = 5.6 kg has a radius of 0.14 m and is pivoted so that it rotates freely about its axis. What is the torque being exerted by this force about the rotation axis

Determine the 2-year peak discharge prior to development : A development is being planned within a 250-acre watershed. The present land use is 120 acres of pasture, with soil type B(CN=61), and the rest soil type D (CN=80). The Tc is 54 min. and the 2-year, 24-hour storm depth is 4 in.

What frequency is heard by an observer : What frequency is heard by an observer who hears the 450-Hz siren on a police car traveling at 35 m/s away from her

Determine what is the unit discharge at 20 minutes : Assume a time to peak of 15 minutes and the unit peak discharge is 7.0 cfs/in, using the Gamma Function Unit Hydrograph what is the unit discharge at 20 minutes

What is the gram molecular mass : An unknown gas has a density of 1.584 kg/m3 at STP. (STP, for standard temperature and pressure, What is the gram molecular mass

Determine the scs time of concentration of a 400-ft : The channel has side slopes of 4H:1V and a longitudinal slope of 0.5%. Assume a depth of flow of 6-inches. The parking lot slopes at 1% toward the channel from both sides, and the 2-year, 24-hour rainfall is 2in.

User Account

All Pages