TWINLATIN Twinning European and Latin-American River Basins for Research Enabling Sustainable Water Resources Management Work Package 3 Hydrological Modelling and Extremes D3.1 Hydrological modelling report D3.2 Evaluation reports February 2009 TWINLATIN List of Contents 1. INTRODUCTION .................................................................................................................. 1 2. BAKER (AND BIOBÍO) RIVER BASIN (CHILE).................................................................... 5 2.1 Description of basin ............................................................................................................. 5 2.2 Choice of model.................................................................................................................. 11 2.2.3 User interface .............................................................................................................. 12 2.3 Data requirements ............................................................................................................. 13 2.3.1 Input data..................................................................................................................... 13 2.3.2 Output data.................................................................................................................. 14 2.4 Scenario modelling............................................................................................................. 14 2.5 Model development............................................................................................................ 17 2.5.1 Overview..................................................................................................................... 17 2.5.2 Model set-up................................................................................................................ 17 2.5.3 Input Data.................................................................................................................... 20 Topography................................................................................................................................... 20 2.6 Calibration.......................................................................................................................... 23 2.7 Validation ........................................................................................................................... 25 2.8 Evaluation of hydrological modelling (D3.2)................................................................... 27 2.9 Summary and recommendations...................................................................................... 28 3. CATAMAYO-CHIRA RIVER BASIN (ECUADOR-PERU)..................................................... 30 3.1 Description of basin ........................................................................................................... 30 3.1.1 Hydrology ................................................................................................................... 30 3.2 Choice of model.................................................................................................................. 31 3.2.1 Problems...................................................................................................................... 31 3.3 Model development............................................................................................................ 32 3.4 Data requirements ............................................................................................................. 35 3.5 Calibration.......................................................................................................................... 40 3.6 Validation ........................................................................................................................... 46 3.7 Results................................................................................................................................. 48 3.8 Scenario modelling............................................................................................................. 54 3.9 Evaluation of hydrological modelling (D3.2)................................................................... 55 3.10 Summary and recommendations...................................................................................... 56 4. CAUCA RIVER BASIN (COLOMBIA) ................................................................................. 59 4.1 Description of basin ........................................................................................................... 59 4.2 Choice of model.................................................................................................................. 60 4.3 Data requirements ............................................................................................................. 61 WP3 Hydrological Modelling and Extremes page iii TWINLATIN 4.4 Model development............................................................................................................ 62 4.5 Calibration.......................................................................................................................... 64 4.6 Validation ........................................................................................................................... 65 4.7 Evaluation of hydrological modelling (D3.2)................................................................... 65 4.8 Summary and recommendations...................................................................................... 68 5. COCIBOLCA LAKE BASIN (NICARAGUA)......................................................................... 69 5.1 Description of basin ........................................................................................................... 69 5.1.1 Introduction................................................................................................................. 69 5.1.2 The regional climate.................................................................................................... 71 5.1.3 Previous studies and TWINLATIN objectives ........................................................... 72 5.2 Choice of model.................................................................................................................. 73 5.3 Data requirements ............................................................................................................. 83 5.4 Scenario modelling............................................................................................................. 84 5.5 Model development............................................................................................................ 85 5.6 Calibration and validation ................................................................................................ 93 5.7 Evaluation of hydrological modelling (D3.2)................................................................. 111 5.8 Summary and recommendations.................................................................................... 114 6. QUARAÍ RIVER BASIN (BRAZIL).................................................................................... 115 6.1 Description of basin ......................................................................................................... 115 6.2 Choice of model................................................................................................................ 115 6.3 Data requirements ........................................................................................................... 116 6.4 Scenario modelling........................................................................................................... 118 6.5 Model development.......................................................................................................... 118 6.6 Calibration........................................................................................................................ 128 6.7 Validation ......................................................................................................................... 131 6.8 Evaluation of hydrological modelling (D3.2)................................................................. 133 6.9 Summary and recommendations.................................................................................... 134 7. CUAREIM RIVER BASIN (URUGUAY)............................................................................. 135 7.1 Description of basin ......................................................................................................... 135 7.1.1 Location..................................................................................................................... 135 7.2 Choice of model................................................................................................................ 146 7.2.1 Current administration............................................................................................... 146 7.3 Data requirements ........................................................................................................... 150 7.4 Scenario modelling........................................................................................................... 152 7.5 Model development: SWAT............................................................................................ 161 7.6 Model development: MODSIM .....................................................................................