Flash flooding is triggered in several ways. In general, flash flooding occurs when the ground becomes saturated, and water runs directly into streets, storm drains, streams and creeks, and rivers. If the water is not carried away fast enough, it can back up into homes causing extensive damage. Topography is also a factor. Arkansas is hilly in the north and west, with water running quickly from higher elevations into valleys.
Some valleys are fairly narrow, with nowhere for water to spread out.
These areas are more prone to flash flooding than areas of south and east Arkansas where there is less terrain and more room for water to spread out. However, with high enough rainfall rates, flash flooding can occur just about anywhere. When high water problems are imminent, the National Weather Service will issue a Flash Flood Warning. Know where you are versus the water. But during periods of heavy rain, the flow may be slowed as rivers rise.