Disasters may happen again and again we need to act precisely to prevent them. Knowledge and understanding about the root causes of disasters is important because it can help us . One example of disasters is flood. We know the word flood but we do not know what are the root causes of it and how do it produced. We also need to know what are the difference between flood and flash flood.
Flood is just a plain rising level of water in land. Flood occurs when water inundates land that’s normally dry. This can happen in multitude ways. Most common, when rivers or streams overflow their banks. It takes hours or even days to develop and residents are given ample time to evacuate and prepare. Excessive rain, a rapture dam or levee, rapid ice melting in the mountain or even unfortunately place beaver dam can overwhelm a river and send it spreading over the adjacent land called flood plain.The flooding in coastal area occurs when a large storm or tsunami causes the sea to surge inland. Another reason why flood occurs because of clogged canals. Clogged canals triggers flooding because it stop the water from flowing which contributes to lessen the level of water in land.
While on the other hand,flash flood is rapidly rising and rushing water in land.Flash flood is caused by slow moving over the same area a heavy rains from hurricanes and tropical storms. Flash flood occurs through several factors. There are two elements, one is the rainfall intensity and the other is duration. Intensity refers to the rate of rainfall and duration is how long the rain last. Within a few minutes or hours of excessive rainfall, flash flood occurs. Since the water during flash flood is moving with intensity, moving water has a destruction power. When a river overflow its banks, It can roll boulders,tear out trees, destroy buildings and bridges, can kill human lives, cars can be picked up and the water and landscapes can be contaminated with hazardous materials.
Possibilities that Flood may occur:
- When there’s a heavy and excessive rain and it already take hours.
- When you are in the coastal area and the water level is increasing.
- The water level in land is starting to get high.
- Blocked drainage ditches is overflowing across roads, gardens and property.
- When the officials in your area starting to inform you to evacuate.
Flood will become a disaster only if we do not take action. Flood is unstoppable.After the flood it is important to know what to do.
Here are some safety tips after the flood that you can take:
- Do not return to your home until authorities told to do so.
- Do not use any appliances that have been flooded because it can done risk that may lead to electric shocking or fire when turned on.
- Use boots or covered shoes that can protect your feet especially when you have any wounds to prevent diseases like leptospirosis.
- Do not try to open any main switch.
- Make sure that your drinking water is not contaminated.
- Any household items damaged by flood must be discarded.
- Clean your surroundings.
- Do not eat food that have been exposed to flood water.
- Do not use medicines that have been exposed to flood water.
- Dry up your home and all items that you can still use.
Flood can create a big impact to human lives. So,it’s better to be prepared all the time so that you can prevent risk. Flood may produced economic losses, kill people lives, damage health condition and many more consequences. Disaster depends in our hands. The social vulnerable depends on the choices we make and the actions we take as a leader and decision makers, as planners and member of the society it depends on us how we change our environment and how we live and deal with it.
National Weather Service. (n.d.) A Preparedness Guide. Retrieved January 10, 2017, from http://webcache.googleusercontent.com/search?q=cache:http://w4ehw.fiu.edu/flood%2520guide%2520noaa.pdf
National Geographic Society. (2015). Retrieved January 10, 2017, from http://webcache.googleusercontent.com/search?q=cache:http://environment.nationalgeographic.com/environment/natural-disasters/floods-profile/
Office of Public Works. (n.d.). Warning Signs . Retrieved January 10, 2017, from http://www.flooding.ie/AmIatrisk/