GroMoPo Metadata for Rio Salado MODFLOW model

The Rio Salado catchment covers 170,000km2 of the Buenos Aires province, Argentina. The area suffers from persistent flooding situations that affect a large proportion of the catchment and hence imposes a severe constraint in the existing production levels and in the realisation of the fall economic potential of the region. The complexity of the landscape and the delicate groundwater-surface water interaction in a large dune field area made it essential to develop different approaches to model such interaction, as part of the study for an Integrated Master Plan for the whole basin. An approach using MODFLOW proved to be useful at a regional and prefeasibility level to generate flood risk maps and estimate net benefits for different drainage schemes. However ISISMOD, a groundwater model coupled with a surface water model proved to be a key water resource management tool to support feasibility studies and the detailed design of a drainage network capable of removing flood waters without detriment to the wetlands and fresh groundwater lenses of the area during dry periods.

里奥萨尔多流域覆盖了阿根廷布宜诺斯艾利斯省170,000平方公里的土地。该区域长期遭受洪水侵袭，对流域内大面积地区产生严重影响，从而对现有生产水平及该地区实现秋季经济潜力构成严峻限制。由于景观复杂且大型沙丘区域地表水与地下水的微妙相互作用，开发不同方法以模拟此类相互作用成为研究整个流域综合总体规划不可或缺的一部分。采用MODFLOW方法在区域及预可行性层面证明了对生成洪水风险图和估算不同排水方案净收益的有用性。然而，ISISMOD，一种与地表水模型耦合的地下水模型，被证实是支持可行性研究和详细设计排水网络的至关重要的水资源管理工具，该网络能够在干旱期间有效排除洪水，同时不影响该地区湿地和淡水含水层。