THE AIZM FLOOD MODEL
ACCURACY
AND PERSPECTIVE
IN THE GEOMORPHOLOGICAL RESEARCH
Martin Caletka
Monika Šulc Michalková
Martin Koli
AIZM model…
1. WHAT IS IT?
2. HOW DOES IT WORK?
3. ON THE ACCURACY…
4. PERSPECTIVE OF USING…
WHAT IS IT?
• A SIMPLE TOOLSET BASED ON CHAINING OF ArcGIS
TOOLS (MODEL BUILDER)
• APROXIMATION OF FLOOD WATER LEVELS (IN AREAS
WHERE HYDRAULIC OUTPUTS MAY BE UNAVAILABLE)
• „A VIEWER“ RATHER THAN „A MODEL“
• NO INTENTION OF SUBSTITUTING THE HYDRAULIC
MODELS
HOW DOES IT WORK?
INPUT DATA:
CENTRAL POINT
NAME
TABLE OF DEPTHS
COLUMN WITH DEPTHS
RIVER NETWORK
DMR – RASTER / TIN
TARGET FOLDER
SIZE OF MASK
HOW DOES IT WORK?
ON THE ACCURACY…
ARE WE ALLOWED TO BE SURE ABOUT
THE RELEVANCE OF THE MODEL OUTPUTS?
↓
COMPARISON WITH THE OUTPUTS
OF THE HYDRAULIC MODELS… IS NEEDED
Directive 2007/60/ES on the assessment
and management of flood risks
Q5, Q20, Q100
DMR 4G, DMR 5G
• 30 RIVER SECTIONS
• RIVER SECTIONS SORTED
OUT INTO 6 CATEGORIES
1. Straight channel
2. Small meanders
3. Large meanders
4. Confluence =
5. Confluence ≠
6. Bifurcation
• INUNDATION CUT INTO 20
SEGMENTS – RATIOS…
Q5, Q20, Q100
DMR 4G, DMR 5G
PERSPECTIVE OF USING ?
• A RELEVANT EXTENT OF FLOOD IS REQUIRED
IN A SHORT TIME
• DENDROGEOMORPHOLOGY
• (FLASH) FLOOD MODELLING IN SMALL
CATCHMENTS
FURTHER IMPROVEMENT IS NEEDED…
THANK YOU FOR YOUR ATTENTION
Martin Caletka
martin.caletka@mail.muni.cz