Unit #4 Case Study - Extreme Flooding on the Johnstone River, Far North Queensland
Unit #4 Case Study - Extreme Flooding on the Johnstone River, Far North Queensland
Case Study Area is Located around Innisfail in Far North Queensland(only selected parts of the Johnstone Shire flood study are provided courtesy of the Johnstone Shire Council)
Extreme Flooding Case Study
Contents...
background on
Streams and Drainage...
Flood Warning System for the Johnstone River
Johnstone River
Catchment
Flood Risk
Previous
Flooding
Flood
Forecasting
Johnstone
River
ALERT System
Flood
Warnings and Bulletins
Telephone
Weather Products
Interpreting
Flood
Warnings
and River Heights
Assessment
of
the Flood Potential
Background to Flood Study
Background
-
the Johnstone River System
Objectives
of the Flood Study
The Seven
Key Stages in the Study
Key
Locations in Flooding Study
Flood Model Development and Calibration
How to
Make a Flood Model
Comparing
Model
and Actual Rainfall at Innisfail
Design
Floods
-Hypothetical Floods Used for Planning
Calibrating
the
Flood Model example 1999 flood
Design Hydrology
The two main methods of determining the magnitude of the flow for a
design event
Method 1.
Flood frequency analysis (FFA)
Method2.
Design
rainfalls with the URBS Model
General
Agreement
between the two Models
Historical
Evidence
of Flood Levels
Ultimately Which River Levels Constiute a Flood is a Human Decision
based on Both Models and Historical Evidence
Adopted
Peak
Flows - A Human Decision