State True/False
a. Storm sewers are usually designed using an assumption ofgradually varied flow.
b. While water is being removed from a distribution system tofight a fire, the elevation of the hydraulic grade line tends todecrease.
c. A three-hour unit hydrograph represents a storm that producesthree inches of runoff during the first hour of precipitation.
d. Adjusting the downstream weir in the 4ft wide indoor flume isthe usual way to change the discharge
e. A prismatic channel has a rectangular cross-section
f. A pressure of 10 psi corresponds to a head of 23 ft ofwater
