Shaina Mavreen D. Villaroza
IV – Electron
A sudden and often destructive surge of water
down a narrow channel or sloping ground, usually
caused by heavy rainfall.
Flash flooding is the number one cause of deaths
associated with thunderstorms, claiming more than
140 lives each year.
• Flash floods can strike any time with little or no
warning. City streets can become rivers in seconds.
Causes of Flash Flood
Caused by slow-moving thunderstorms,
thunderstorms repeatedly moving over the same
area, or heavy rains from hurricanes and tropical
Blocked catch basins, storm drains, water main
breaks, and sewer lines can also lead to flooding.
Effects to the Environment
Endanger lives of humans
Soil erosion and sediment deposition problems
Interfere with drainage
Impaired navigation and hydroelectric power
Keep your local drains clear of litter and debris
to avoid blocked drains that can cause floods.
Even if the debris doesn’t block your own
drains, it could be swept downhill and cause
To prevent clogging,
throw your garbage properly and
clean up drains.
Resolution of the Issue
The basic methods of flood control have
been practiced since ancient times. These
methods include reforestation and the
construction of levees, dams, reservoirs, and
floodways (artificial channels that divert