RIVERINE
- Slow kinds include runoff from constant rainfall or rapid snow melting that has surpassed the capacity of a river's channel. Some causes are hurricanes and tropical depression, foreign winds and unexpected drainage obstructions like landslides, ice or debris.
- Fast kinds include flash floods that are a result of convective precipitation (intense thunderstorms) or a sudden release of water that was previously held behind a dam, landslide or glacier.
ESTUARINE
- An estuarine flood is caused by a grouping of sea tidal surges caused by storm-force winds. Storm surges that are caused by a tropical or extratropical cyclone are included in this category of floods.
- Coastal floods are caused by severe sea storms, or at the hands of another hazard such as a tsunami or a hurricane. Storm surges, as mentioned before, are also included in coastal floods.
- Catastrophic floods are floods that are caused by an unexpected and significant event. This kind of event could be a dam breakage, or be the result of a natural hazard such as an earthquake.
MUDDY
- Muddy floods are caused by runoff from crop land. Muddy runoff is more likely to be detected when the runoff reaches areas that are inhabited.
HUMAN-INDUCED
- Human-induced floods are things such as accidental damage by workmen to tunnels or pipes.
