1. Floods

2. Flood – natural occurrence of water spilling over the sides of a stream’s banks onto the adjacent land
Floodwater carries large amounts of sediment

5. when floodwaters recede, sediments are dropped on the floodplain
Floodplain – broad, flat area that extends out from a stream’s bank
Covered by excess water during flooding
Develop highly fertile soil

7. Floods occur when runoff exceeds infiltration at a high rate
If the groundwater levels are high, very little infiltration takes place
The National Weather Service and U.S. Geological Survey work to keep people warned of possible floods