Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
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