European Commission - DG Environment Walloon Regional Government Province of Limburg - The Netherlands Province of Limburg - Belgium Waterboard Roer & Overmaas 3LORWSURMHFW IRUWKHGHILQLWLRQRIHQYLURQPHQWIULHQGO\PHDVXUHV WRUHGXFHWKHULVNIRUIODVKIORRGV LQWKH*HXO5LYHUFDWFKPHQW %HOJLXPDQGWKH1HWKHUODQGV B4-3040/97/730/JNB/C4 by S. Dautrebande, J.G.B. Leenaars, J.S. Smitz & E. Vanthournout (eds.) May 2000 European Commission - DG Environment Walloon Regional Government Province of Limburg - The Netherlands Province of Limburg - Belgium Waterboard Roer & Overmaas Authors contributing to the present report were: M. Bourouag C. Casse K. Couderé S. Dautrebande D. Deglin J.F. Deliège E. Everbecq V. Hallet P. Hennebert M.C. Hoogvliet J.G.B. Leenaars J.C. Maréchal A. Monjoie C.J.J.H. Schouten J.S. Smitz F.M. Uithol F. v.d. Coevering R. Van Looveren E. Vanthournout 0D\ European Commission - DG Environment Walloon Regional Government Province of Limburg - The Netherlands Province of Limburg - Belgium Waterboard Roer & Overmaas 7$%/(2)&217(176 35()$&( $&.12:/('*(0(176 9 $%675$&7 9, ,1752'8&7,21 1.1 PROBLEM DEFINITION................................................................................................................... 1 1.2 PROJECT DESCRIPTION.................................................................................................................. 4 1.3 PROJECT ORGANISATION .............................................................................................................. 4 3URMHFWWHDP 1.3.1.1 Funding organisations and stakeholders.............................................................................................4 1.3.1.2 Project management...........................................................................................................................5 1.3.1.3 Project partners ..................................................................................................................................6 &RPPXQLFDWLRQZLWKLQWKHSURMHFW 1.3.2.1 Management team..............................................................................................................................8 1.3.2.2 Technical meetings ............................................................................................................................9 1.3.2.3 Project team meetings ........................................................................................................................9 2%-(&7,9(6 0(7+2'2/2*<$1'$3352$&+ 3.1 METHODOLOGICAL MODEL DEVELOPMENT ................................................................................ 13 3.2 METHOD DESCRIPTION PER STEP ................................................................................................ 14 7HUULWRULDOGDWDLQYHQWRU\ 3.2.1.1 The GIS database structure ..............................................................................................................15 3.2.1.2 Map presentation and CD-ROM ......................................................................................................15 3UHOLPLQDU\ULVNDQDO\VLV 6FHQDULRGHYHORSPHQW +\GURORJLFDOPRGHODQGDQDO\VLV 3.2.4.1 Data collection .................................................................................................................................17 3.2.4.2 Hydrological assessment..................................................................................................................17 3.2.4.3 Model development and simulations................................................................................................18 3.2.4.4 Hydrological analysis.......................................................................................................................18 +\GURG\QDPLFVWXG\ 3.2.5.1 Data collection .................................................................................................................................19 3.2.5.2 Model development and simulation of scenarios .............................................................................19 3.2.5.3 Analysis of results............................................................................................................................19 i European Commission - DG Environment Walloon Regional Government Province of Limburg - The Netherlands Province of Limburg - Belgium Waterboard Roer & Overmaas 6WXG\RIWKHOHJDOIUDPHZRUNDQGLQVWUXPHQWV 7(55,725,$/'$7$,19(1725< 4.1 INTRODUCTION........................................................................................................................... 21 4.2 OBJECTIVES................................................................................................................................21 4.3 SPATIAL DATA INVENTORY AND GIS DEVELOPMENT ................................................................. 22 0HWKRGV 4.3.1.1 Technical challenges........................................................................................................................23 4.3.1.2 Inter-disciplinary communication ....................................................................................................24 4.3.1.3 Software standard.............................................................................................................................24 4.3.1.4 Data Acquisition ..............................................................................................................................24 2XWSXWV 4.3.2.1 Required GIS map layers .................................................................................................................25 4.3.2.2 Digital Elevation Model...................................................................................................................25 4.3.2.3 Soil...................................................................................................................................................26 4.3.2.4 Land use...........................................................................................................................................27 4.3.2.5 Historical land use............................................................................................................................28 &RQFOXVLRQV 5HFRPPHQGDWLRQV 4.4 DESCRIPTION OF THE GEUL CATCHMENT.................................................................................... 30 3K\VLFDOHQYLURQPHQWRIWKH*HXOFDWFKPHQWDUHD 4.4.1.1 Climate.............................................................................................................................................30 4.4.1.2 Hydrology........................................................................................................................................31 4.4.1.3 Topography......................................................................................................................................32 4.4.1.4 Lithology and Soils..........................................................................................................................33 &XUUHQWODQGXVH 4.4.2.1 Land cover .......................................................................................................................................38 4.4.2.2 Land management / tillage...............................................................................................................39 +LVWRULFDOODQGXVHDQGKLVWRULFDOODQGXVHFKDQJHV 4.4.3.1 Review of historical land use and historical land use changes.........................................................40 4.4.3.2 Historical land use map....................................................................................................................43 4.4.3.3 Inventory of historical land use changes ..........................................................................................46 4.5 RISK ANALYSIS........................................................................................................................... 47 ,QWURGXFWLRQ 2EMHFWLYHV 0HWKRGRORJ\ ii European Commission - DG Environment Walloon Regional Government Province of Limburg - The Netherlands Province of Limburg - Belgium Waterboard Roer & Overmaas 7KHVLPSOLILHG86/(PHWKRGSDUDPHWHULQYHQWRU\ 4.5.4.1 Land .................................................................................................................................................49 4.5.4.2 Land use...........................................................................................................................................49 5HVXOWVRIWKHULVNDQDO\VLVZLWKWKHVLPSOLILHG86/(PHWKRG 4.6 CONCLUSIONS AND DISCUSSION ................................................................................................. 54 iii European Commission - DG Environment Walloon Regional Government Province of Limburg - The Netherlands Province of Limburg - Belgium Waterboard Roer & Overmaas $11(;(6 Annexes A till F can be consulted in a separate folder added to this report, even as annexes G, H and I (maps). A. Spatial data inventory and GIS development B. Area description C. Preliminary risk analysis D. Hydrological study: original text and figures E. Hydrodynamic modelling F. Scenario development and legal framework G. Maximum water levels along the longitudinal profile of the Geul river for different scenarios (large sized paper map) H. Current land use distribution; input for flash flood analysis (large sized paper map) I. The historical change of the risk of runoff since 1950; reference for flash flood analysis (large sized paper map) iv European Commission