What is a river of resurgence?

A river of resurgence refers to a body of water that initially flows underground before emerging back to the surface at a later point. This phenomenon typically occurs in regions where the landscape is characterized by porous rock or limestone, allowing water to seep into underground channels. The water might be sourced from precipitation, melting snow, or other forms of surface water that percolate into the ground. When pressure builds up or when there is a geological formation that forces the water back up, the river reemerges, creating what is referred to as a resurgence. This term highlights the cycle of water moving through different states, emphasizing the connection between surface and subterranean water systems.

In contrast, other options represent different types of rivers or flow conditions that do not accurately describe the resurgence phenomenon. For instance, rivers that flow continuously on the surface lack the underground aspect and do not fit the definition of resurgence. Similarly, rivers that split into multiple streams present a different dynamic of water flow, and seasonal rivers only operating during certain months do not involve the cycle of disappearing and reappearing, which is a hallmark of resurgence.