Techniques for flood hazard zonation and vulnerability ... - NDMA

3/17/2010
Tools/Techniques Used for Flood Hazard Zonation
and
Vulnerability Mapping
• Meteorological data;
• Flood Frequency Analysis;
• Hydrological Data;
• Past /Historical Flood Damages Record;
• Flood Plain Maps;
• Bathymetric Surveys;
• Flood Forecasting Computer Model;
• Comprehensive Flood Management Plans;
• Flood Warning Manual;
• Telemetry System;
• Standard Operating Procedures for Dams;
• Weather Radars.
Tools/Techniques Used for Flood Hazard Zonation
and
Vulnerability Mapping
• Meteorological data:
Rainfall data collected for the past years (62
years) is used to make an
analysis/estimate
of any
likely
flooding
situation
on any
river
system/river catchment/urban area based on which future planning
towards flood control/land-use
etc. can be made. This data is collected
from various rainfall gauges installed in the province and is available
on CD, internet etc. (Used at National, Provincial and District levels).
• Flood Frequency Analysis:
This tool is used for the design of an effective flood management
system (dam/bund/dike/spur etc.) based on aflood
of certain definite
return period (5/10/25/50/100/10001000 years etc.). Certain engineering
techniques (Log Pearson, Log Gumbel etc.) are used for this analysis.
(Used at National, Provincial and District levels).
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