How is "floodwater" defined in the context of Arizona water law?

In Arizona water law, "floodwater" is defined as water flowing on the surface due to excessive rainfall. This definition captures the essence of floodwater as it pertains to how it behaves and impacts the landscape during significant precipitation events. Floodwater typically occurs when the volume of rain exceeds the capacity of the land to absorb it, resulting in surface runoff that can lead to flooding.

The recognition of surface flooding is important in water law, particularly because of its implications for water rights and land management practices within the state. Understanding the nature and characteristics of floodwater is crucial, especially in a region like Arizona, where rainfall can be sporadic and intense, leading to varying water management needs.

Water stored in reservoirs pertains to water that is intentionally collected and held for various uses, such as irrigation or municipal supply, which is distinct from the spontaneous and uncontrolled nature of floodwater. Water that flows underground during storms refers to groundwater movement, a different hydrological concept, while water from irrigation systems is specifically managed and regulated for agricultural purposes, again contrasting with the erratic nature of floodwaters.