equipment for community flood warning in central … marzo/early/equipment.pdf · equipment for...
TRANSCRIPT
4th World Water Forum 6-22 March 2006 Mexico City
Equipment for Community Flood Warning
in Central America and Caribbean Region
Juan Carlos Villagran (UNU-EHS)
Jacob Opadeyi (UWI, Trinidad)
Hidetomi Oi (JICA)
● Examples - Reventado in Costa Rica- Speightstown in Barbados- Caparo in Trinidad
● Conclusion / Recommendation
TH E C A R IB B EA N
BARBADOS
TRINIDAD & TOBAGO
COSTA RICA
What is new? What are advantages ? What are limitations?
Answers will be given by the following examples.
Reventado Caparo Speightstown
Costa Rica
Cartago
Installation of water level gauge
Costa Rica
Flood Hazard Map of Speightstown
Barbados
Rainfall Equipment with Alarming Unit
10
20
30
40
50
30㎜
POWER
ALARM BOX
Rain Receiver
Conduit pipe
Built in electrode
Alarming unit
Cable
Buzzer
Water tank
Scale
Rainfall equipment with the alarm unit for community operated flood warning
Fixed or Mobile Phone
Whenever accumulated rain reaches pre-set
levels, then,
The buzzer sounds and the
light turns on, and dials residents at
the same time
Trinidad and Tobago
2 year flood
5 year flood
10 year flood 50 year floodCaparoriver
Stuff gauge for community flood warning
Problem: Difficult to go to the sites under heavy rainfall and strong wind
Conclusion
• Monitoring of localized phenomena is essential for early warning especially for flash floods and landslides in small, steep catchments.
• In view of frequent disasters occurring in the world and so many communities at risk, community system should be promoted, while waiting further development in high-tech approach and national surface networks.
Recommendation
In order to promote community early warning it is recommended:
● Each country will :- conduct Inventory survey of communities at risk of flooding - prepare plan to establish early warning systems for priority ones
by 2015
● International organizations (ISDR, WMO etc.) will:- support production/improvement of equipment for community
flood warning - test/evaluate appropriateness to different conditions, and - officially announce the result.
● Cooperation between: - meteorologists, hydrologists and disaster managers- central level through community level, including gauge readers
and community people
Barbados Meteorological Services (BMS) Flood Warning
7:00 am Monday, November 22, 2004
Here is a Flood Warning from BMS.
A persistent trough that has been in the area for the last few days produced moderate to heavy showers during the night.
These conditions are expected to persist over the island today and with the saturated conditions of the ground any additional rain is likely to produce flooding in some areas.
Residents in flood prone areas should be on the alert and take the necessary precautions.
This warning will remain in effect until 4 pm today.
