Stormwater quiz TR-55 Questions And
Answers
What does 'treatment' mean with respect to the CN A cover type modifier to describe the
management of cultivated agricultural lands
Does runoff increase or decrease as CN increases increase
What is the key characteristic used to categorize soils in...
What does 'treatment' mean with respect to the CN A cover type modifier to describe the
management of cultivated agricultural lands
Does runoff increase or decrease as CN increases increase
What is the key characteristic used to categorize soils into HSG minimum infiltration rate
What assumptions about the connectivity of imperviousness are used to develop CN values
Assume they are directly connected to the drainage system
What key factors affect the time of concentration (time for runoff to travel from the hydraulically
most distant point of the watershed to a point of interest)? Surface roughness, channel
shape and flow patterns, slope
Identify the variables in Mannings solution for overland flow time Tt= travel time, n=
mannings roughness coefficient, L=flow length, P2 = 2 year 24hr rainfall, s=slope of hydraulic
grade line
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