Hortonian overland flow
Hortonian overland flow is a process in which water from rain does not seep into the ground but instead flows over the land's surface. This typically occurs when the soil is saturated or impermeable, preventing absorption. As rain continues, excess water accumulates and moves downhill, contributing to surface runoff. This type of flow can lead to increased erosion, flooding, and the transportation of sediment and pollutants into waterways. Understanding this process is crucial for managing water resources, agriculture, and urban planning to mitigate flood risks and protect the environment.
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Hortonian Overland Flow refers to the process where rainwater flows over the land's surface rather than soaking into the ground. This typically happens when heavy rainfall exceeds the soil's absorption capacity, causing excess water to pool and move downhill. Factors like soil type, vegetation, and land slope influence this flow. It is significant in understanding flooding and erosion, as it can lead to rapid water runoff, affecting rivers and streams. Essentially, it highlights the impact of rainfall intensity on how water interacts with the land.