IGNOU MGGE 4 2026 - What is runoff? Describe in detail the various direct and indirect met

Question

What is runoff? Describe in detail the various direct and indirect methods used for measuring runoff.

28 Jan 2026

Answer :

Word Count : 456

Runoff is the portion of precipitation that flows over the land surface and eventually reaches streams, rivers, or other water bodies, rather than infiltrating into the soil or evaporating. It plays a crucial role in the hydrological cycle by redistributing water from precipitation to rivers and reservoirs, influencing flood events, soil erosion, and water resource availability. Runoff is affected by factors such as rainfall intensity, soil type, land slope, vegetation cover, and land use. Understanding and measuring runoff is essential for water resources planning, flood control, irrigation design, and environmental management. Methods for measuring runoff can be broadly classified into

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