Certified Floodplain Manager (CFM) Exam 2025 – 400 Free Practice Questions to Pass the Exam

Runoff refers to the water that comes from precipitation or melting snow that flows over land and eventually reaches a stream, river, or other water body. This water carries sediment, nutrients, and other pollutants with it, making it important to manage and control. Option A is incorrect because runoff does not specifically refer to waste water from industrial facilities, but rather any type of water that flows over land. Option C is incorrect because this describes infiltration, which is the process of water filtering through soil. Option D is incorrect because that refers to excess irrigation water in agricultural fields, rather than runoff from precipitation or snowmelt.