dmc 503_disaster preparedness & implementation

7/29/2019 DMC 503_Disaster Preparedness & Implementation

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Hazards

• Hazards:

• Hazards are defined as “Phenomena that pose a threat to

people, structures, or economic assets and which may cause a

disaster. They could be either manmade or naturally occurring

in our environment.”

• The extent of damage in a disaster depends on:

•

1) The impact, intensity and characteristics of thephenomenon and

• 2) How people, environment and infrastructures are

affected by that phenomenon



What is Preparedness ?

• Whether a byproduct of excessive rainfall, adam or levee failure, or a sudden release of

water held by an ice jam, floods can pack

enormous destructive force. Rising floodwaters can reach heights 30 feet or more and

fast moving flood waters can readily roll

boulders, tear out trees, destroy buildings and

bridges, and scour out new channels.



Preparedness

• Furthermore, flash flood-producing rains

trigger catastrophic mud slides. You will not

always have a warning that these deadly,

sudden floods are coming. Most flood deaths

are due to flash floods. Nevertheless, lives

can be saved and property damage mitigated

with proper flood preparedness. Theseresources focus on flood awareness and flood

preparedness issues.



Floods

• Floods are the most common and widespread

of all natural hazards. Some floods developover a period of days, but flash floods can

result in raging waters in just a few minutes.

Water runs off steeper ground very rapidly,causing natural drainage systems to overflow

with rushing flood waters and a deadly cargo

of rocks, mud, smashed trees and otherdebris. Mudslides are also a danger created by

flood conditions.



What to do before a flood ?

• Know the terms used to describe floodingconditions, which will be broadcast on radioand television.

–Flood forecasts means rainfall is heavy

enough to cause rivers to overflow theirbanks or melting snow is mixing withrainfall to produce similar effects.

–Flood warnings or forecasts of impending

floods describe the affected river, lake ortidewater, the severity of flooding willbegin.



Flash Flood Warning

– Flash flood watches mean heavy rains (that may

cause sudden flash flooding in specified areas) are

occurring or expected to occur. Understand that a

flash flood can occur without any visible sign of rainfall in your area. Be alert to a possible

emergency which will require immediate action.

– Flash flood warnings mean flash flooding is

occurring or imminent along certain streams and

designated areas. Move to high ground

immediately.



What to do before a Flood? Cont..

• Also contact your local emergency

management, civil defense or disasterpreparedness office to learn local warning

signals: know who will issue the warnings,

when, how and under what circumstancesthey will be given and how you should

respond.

•

Keep a stock of food that requires no cookingor refrigeration. Store drinking water in clean,

closed containers. Electric power, gas and

water services may be disrupted.



before a flood

• Keep a portable, battery-operated radio and flashlights in

working order; stock extra batteries. Have first aid supplies

and any medicines your family may need.

• Find out if you live in a flood-prone area and what the average

flood depths in your community are.

– You may need to store materials like sandbags, plywood,

plastic sheeting and lumber to protect your house from

flood waters and to make quick repairs after a severe

storm.

– Contact your insurance agent, community planner or local

emergency manager for information.



before a flood

• Identify dams in your area. Be aware of

what could happen if they fail. Becomefamiliar with local emergency action

plans.

• Learn your community's flood evacuation

routes and where to find high ground. In

a flash flood you may need to seek high

ground on foot quickly.



before a flood

•

Know the elevation of your property in relation to nearbystreams and dams so that you will know if the flood

elevations forecasted will affect your home and property.

Call you local emergency management office for help.

• Contact your insurance agent or local government todiscuss flood insurance coverage. Flood losses are not

covered under homeowners' insurance policies. Flood

insurance is available in most communities through the

National Flood Insurance Program. Get coverage now -there is a waiting period, usually five days, before it takes

effect.



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dmc 503_disaster preparedness & implementation

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