Banca de DEFESA: RAFAEL CASTELO BRANCO ENGELHARDT

FLOOD SIMULATION IN BOA VISTA – RR, USE OF FLOOD MODELS ALOS PALSAR LIFT, MERIT AND HEC-RAS SOFTWARE

Stream simulation, HEC-RAS, MERIT Digital Elevation Model.

The Boa Vista, Roraima Urban zone are located at the area of flat terrain with natural lagoon formation, that condition contribute for the flood occurrence in the raining season. To carry out simulations of flood in stream with the HEC-RAS Software, the relief condition with little altimetric variation makes it difficult to apply a methodology that includes the best-known elevation models such as Alos Palsar and SRTM, this was observed when comparing the simulations with the reality of these flooding occurrence. With means to resolve this problem, was verified the methodology toward the simulation in HEC-RAS and MERIT Digital Elevation Model of the flood in a stream of the Olimpico district, west zone of the city. Then was possible to verify with the mentioned methodology the resulting flood coverage for the return period of 5, 10 e 20 years.