LESSE PILOT STUDY – DENDRE PILOT STUDYWAMM ACTIVITIES IN BELGIUM

EUROPEAN COMMISSION - DIRECTORATE GENERAL XIII

THE INNOVATION PROGRAMME

Marco Gonella – Bernard Hanquet

WAMM

DIGITAL TERRAINMODEL

RAINFALL GAUGES

FLOODEDAREAS LEVEL

METERS

SOILMOISTURE

RAINFALL RADARSATELLITE

WAMM LAY-OUT

Lesse Catchm ent

M euse River

Dendre Catchm ent

SOIL MOISTURE ANALYSIS

Lesse Catchment

Rainfall-runoffsim ulations w ithNAM – M IKE 11m odel

SUBCATCHMENTS, DTM, TC

HYDROLOGICAL PARAMETERS FROM GIS ANALYSIS

DETAILED MIKE 11 NETWORK

CALIBRATION THROUGH HYDROLOGICALANALYSIS

Mean pixel valuefor each sub-basin

6 SAR images from September1992 to April 1993

SOIL MOISTURE EVALUATION FROM SAR

Faculté Universitaire des Sciences Agronomiques de Gembloux - WAMM project - DHI Software Conference - 07/06/1999

Relation SAR/soilmoisture for eachsub-basin

6 simulated soil moisture maps(EPIC-GRID model)

Mean pixel value for each sub-basin

SOIL MOISTURE IN NAM

• SM = U (physical meaning of U)

• SM = L (SM is a superficial “sample” of L)

U

L

SM (SAR)

SM (SAR) – SM (L,U) ANALYSIS

SM (SAR) CAN BE USED TO VERIFY THE ACTUAL STATE OFTHE SOIL MOISTURE (L,U) IN THE MODEL

SM (L,U,k)

SM (L)

SM (L,U)

FLOODED AREAS ANALYSIS

DEM 30X30 m (H 1 m) AVAILABLE FOR THE LESSE RIVER

TOPOGRAPHICAL PROBLEMS

LACK OF GEOMETRICAL DATA

RELIABILITY

SIGNIFICANCE PROBLEMS COUPLING HD RESULTS WITHTHE TOPOGRAPHY

ACCURATE DEM (TOPO AND BATHYMETRICAL) ARE NEEDED

NEW SURVEYS MADE BY SETHYWITH ADVANCEDTECHNOLOGIES

MULTIBEAMBATHYMETRY

COUPLED WITH

AEROLASERTOPOGRAPHY

GIS DATA MANAGEMENT OFTHE MEUSE RIVER ATDINANT

AEROLASERTOPOGRAPHY

MULTIBEAMBATHYMETRY

HIGH ACCURACY OF THE DATA

CROSS SECTION DATA EXTRACTION FROM THEDEM WITH THE WAMM TOOLBOX IN MIKE 11

SIMULATION OF THE 1993FLOOD EVENT

Maximum floodextent at first runwith uncalibratedmodel

Zone coveredby the DEM

Traces ofinundationdetected bySAR

COMPARISON WITH SAR IMAGES

HIGH PERFORMANCES OF MIKE 11 GIS FOR FLOODSIMULATIONS STARTING FROM HIGH QUALITY DATA

HYDRAULIC SIMULATIONS WITH STRUCTURES

Dendre Catchment

HD MODEL

NAM MODEL

CONTROLSTRUCTURES

COMPLETE MODEL SET-UP

HYDRODYNAMIC MODEL

MULTI-CHANNELMODEL

RAINFALL-RUNOFF MODEL

RAINFALL-RUNOFF MODEL

AUTOCALIBRATION

MODULE

STRUCTURE OPERATION MODEL

NEW FEATURESIN MIKE 112000: MORECOMPLEXREGULATIONSTRATEGY

NORMALREGULATION:

FIXEDUPSTREAMLEVEL

OVERRIDEREGULATION:

ALL OPEN

CONCLUSIONS

Lesse CatchmentRADAR DETECTED SOIL MOISTURE IS A GOOD INFORMATION TOVALIDATE ON REAL TIME THE RAINFALL-RUNOFF MODELS

Meuse RiverHIGH PERFORMANCES OF MIKE 11 GIS FOR FLOODSIMULATIONS CAN BE OBTAINED STARTING FROM HIGHQUALITY TOPO-BATHYMETRICAL DATA

Dendre CatchmentWAMM APPROACH (MIKE 11 HD MODEL) ALLOW THEREPRESENTATION OF REGULATED CHANNEL BOTH IN CASE OFNORMAL AND EXTREME CONDITIONS

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