Which method would not be very effective for controlling stormwater runoff?

Which method would not be very effective for controlling stormwater runoff?

• A. Cutting Gullies Down The Face Of An Embankment
• B. Reducing The Steepness Of A Slope
• C. Contouring The Grade To Slow The Flow Of Water
• D. Applying Riprap To A Slope

Answer: (A)

Controlling stormwater runoff relies on slowing, spreading, and safely conveying water to prevent erosion. Cutting gullies down the face of an embankment creates concentrated channels that speed up the flow and erode the slope instead of slowing it down. This focused erosion can undermine the embankment and channel more water quickly to downstream areas, making it ineffective for stabilizing runoff. The other options work with the goal in mind: reducing slope steepness lowers the speed of runoff; contouring the grade slows flow and encourages infiltration; applying riprap dissipates energy and protects the surface from erosion.

Controlling stormwater runoff relies on slowing, spreading, and safely conveying water to prevent erosion. Cutting gullies down the face of an embankment creates concentrated channels that speed up the flow and erode the slope instead of slowing it down. This focused erosion can undermine the embankment and channel more water quickly to downstream areas, making it ineffective for stabilizing runoff.

The other options work with the goal in mind: reducing slope steepness lowers the speed of runoff; contouring the grade slows flow and encourages infiltration; applying riprap dissipates energy and protects the surface from erosion.