![]() Mining can be the source and target of opportunities and threats of different natures exceeding the mine-site perimeter, affecting the socio-ecological system where mining is performed and leading to social tensions and entrepreneurial risks for mining companies. The question is then, is the new module for dam break assessment in HEC-RAS good enough to serve the purpose of accurate representation of dam break flood processes? This paper compares the HEC-RAS dam break module with FLDWAV and DAMBRK on the basis of the theoretical background, numerical solution techniques, ease of use of the models and practical aspects in undertaking dam break simulations. ![]() For this reason, HEC-RAS has the potential to replace the NWS FLDWAV and DAMBRK in area where a HEC-RAS has been developed. The use of HEC-RAS for dam break floods in these watersheds could save significant time and resources. Due to the fact that HEC-RAS (formerly HEC-2) was the standard model for river floodplain inundation assessment for decades, many river systems were modeled by the HEC-RAS (HEC-2) program and they are readily available in many watersheds. In the last two years, another very popular hydraulic model, HEC-RAS, has added a new module for dam break analysis. The national weather service (NWS) FLDWAV and DAMBRK models have been the standard programs and widely applied for dam break flood simulations for years.
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