Floodplains are a natural part of the ecosystem and serve many functions. They contain both cultural and natural resources that are of great value to society. Flooding occurs naturally along every river, stream, and wash. Flood waters can carry nutrient-rich sediments which contribute to a fertile environment for vegetation. Floodplains are beneficial for wildlife by creating a variety of habitats for insects, wild birds, and other animals.
In addition to providing a habitat to many of Pinal County's native plant and animal species, floodplains also have direct benefits to humans. The vegetation often found in floodplains also absorb more flood water than barren land due to reducing the impact to downstream property. This flood mitigating action also has the effect of recharging our groundwater supply.
Human development and industrialization take a toll on the natural functions of the floodplains. Development in the floodplains causes decreases in water quality, lost of wildlife habitats, and an increase in severity and frequency of flood losses. Understanding the importance of maintaining the natural functions of floodplains can lead to better floodplain management approaches that will better protect the natural and beneficial functions of floodplains.