Download input data for modelling

GIS ANALYST CENTER
REDUCING VULNERABILITY TO EXTREME FLOODS AND
CLIMATE CHANGE IN THE DNIESTER BASIN
LOW DNISTER SITE
(GIS&Modelling support)
OLEKSIY ISHCHUK
GIS ANALYST CENTER
KIEV, UA
REDUCING VULNERABILITY TO EXTREME FLOODS AND CLIMATE CHANGE IN THE
DNIESTER BASIN
LOW DNISTER SITE
The tasks of GIS team:
1. Preprocessing of the input data for modeling
2. Spatial analysis of flood consequences using modelling results
3. Risk Assessment and Mapping
THE TERRITORY OF LOW DNIESTER SITE (AREA 790 km2: MD 345 km2, UA 445 km2):
UKRAINE
MOLDOVA
State Hydrometeorology Service of Moldova
The base map of the lower Dniester site (Moldavian site)
BLOM Ukraine company
The base map of the lower Dniester site (Ukrainian site)
INPUT DATA FOR MODELLING:
Administrative layers
ADMINISTRATIVE DISTRICTS and COMMUNES, SETTLEMENTS
Sources: State Hydrometeorological Services of Moldova
BLOM Ukraine
INPUT DATA FOR MODELLING: Hydrographic layers
RIVERS, CHANNELS, LAKES AND RESERVOIRS, DAYKES
Sources: State Hydrometeorological Services of Moldova
BLOM Ukraine
INPUT DATA FOR MODELLING:
The Landcover layer
Metadata description
INPUT DATA FOR MODELLING:
The Soils layer
Metadata description
INPUT DATA FOR MODELLING:
Landuse
Sources: State Hydrometeorological Services of Moldova
The elevation points
Metadata description
Altimetry (MOLDOVA)
State Hydrometeorology Service of Moldova
The elevation points as results of photogrammetric research
(more than 6,300 points)
INPUT DATA FOR MODELLING:
Altimetry (Ukraine)
ELEVATION POINTS (2 000 000 points
as result of photogrammetry)
Sources: BLOM Ukraine
Survey of the dikes geometry
Ukrainian site – 207 km
Moldavian site – 160 km
INPUT
:
DATA FOR MODELLING:
Altimetry
ELEVATION POINTS AND GEOMETRY OF DIYKES
UA: 3178 points
MD: 1650 points
Sources: Research&Development Centre “MONITORING”, Bendery (as result of
geodesic survey)
BLOM Ukraine (as result of photogrammetric analysis)
INPUT DATA FOR MODELLING:
Altimetry
Updating information about geometry of diykes
Sources: Research&Development Centre “MONITORING”, Bendery (as result of
geodesic survey)
BLOM Ukraine (as result of photogrammetric analysis)
BLOM Ukraine company
The points of researching of dams geometry
(more than 3,000 points)
State Hydrometeorology Service of Moldova
SONAR DATA SURVEY
DNIESTER
TURUNCHUK
METADATA DISCRIPTION
GIS ANALYST CENTER
INPUT DATA FOR MODELLING:
Altimetry
ELEVATION POINTS OF DNIESTER and TURUNCHUK CHANNELS
(result of sonar survey: 135 200 points )
TURUNCHUK
DNIESTER
Sources: State Hydrometeorological Services of Moldova
Hydraulic model:
(as part of EIB project on flood risk management in Moldova carried out by
BETA Studio and HR Wallingford)
Implementation of a 2D hydraulic model for the river Dniester:
DNIESTER
TURUNCHUK
Hydraulic model
Construction od DTM from topographic data:
BETA Studio and HR Wallingford
Hydraulic model
BETA Studio and HR Wallingford
Construction od DTM from topographic data.
special procedures have been implemented to construct a detailed DTM including
the bathymetry of the river, using sonar data shown before.
Hydraulic model
BETA Studio and HR Wallingford
Construction od DTM from topographic data.
Two different sets of DTMs
will be used:
- with defences (dykes);
- without defences(dykes):
so to be able to assess the
role of the dykes for flood
protection
Dykes removed
BETA Studio and HR Wallingford
Hydraulic model
Dniester upstream of Dubasari: flow depths
Preliminary results
Flow depth (m)
Hydraulic model
BETA Studio and HR Wallingford
Dniester upstream of Dubasari: flow arrows
Preliminary results
Hydraulic model
BETA Studio and HR Wallingford
Dniester at Turunciuc offtake: flow depth for 2010 event with no defences
Preliminary results
Flow depth (m)
Hydraulic model
BETA Studio and HR Wallingford
Dniester at Turunciuc offtake: flow intensity for 2010 event with no defences
Preliminary results
Flow per unit width (m3/s)
Hydraulic model
BETA Studio and HR Wallingford
Lower Dniester: example of flow arrow at a meander bend
Preliminary results
THE NEXT STEPS
Spatial analysis of flood consequences
GIS ANALYST CENTER
Flooded:
Residential
11%
Industrial
16%
Suburban
10%
Rise in water level: 800 cm
THE NEXT STEPS
GIS ANALYST CENTER
Risk mapping
using
historical
maximum of flood