Analysis of flooding in urban areas, taking into account the residence time of the water on site case of study: Veracruz, México

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(1)E3S Web of Conferences 7, 04023 (2016) FLOODrisk 2016 - 3rd European Conference on Flood Risk Management. DOI: 10.1051/ e3sconf/2016 0704023. Analysis of flooding in urban areas, taking into account the residence time of the water on site case of study: Veracruz, México Faustino De Luna C 1 2. 1,a. 1. 1. , Oscar A. Fuentes M , Laura Vélez M and Ismene L. A. Rosales Plascencia. 2. Instituto de Ingeniería UNAM - Universidad Nacional Autónoma de México, Av. Universidad No.3000 Coyoacán, México D.F. Universidad Autónoma Metropolitana Unidad Azcapotzalco, Azcapotzalco México D.F.. Abstract. Analysing some aspects of water management in urban areas affected by flooding, an event that occurred in September 2010 by overflows Cotaxtla Jamapa and rivers in western Mexico along with the rain event for five consecutive days. In this area, near the Gulf of Mexico, the elevations are less than three meters elevation. Floods are common in cities like Veracruz, in this article the flood risk calculated by means of a hydraulic model of rainfall-runoff dimensional type developed at the Institute of Engineering of the National Autonomous University of Mexico. Data digital terrain elevation models of LIDAR were used, records hourly rainfall levels and channels of some hydrometric stations of the National Water Commission. The location of housing and services in a metropolitan area considered to calculate the depths of flooding in them. To estimate the damage, shall take into account the hydrodynamic behaviour of the flows. Since houses remain flooded for several days, was the reason to use precipitation level for more than seven days. in the mathematical modelling of flows water with a regular grid made up of cells 10 m by side with the boundary condition downstream, corresponding to the predicted change in the average sea level.. 1 Objective Warning the repercussions of the residence time of water in the study area, also the damage caused to homes by floods.. 2 Study area and available information

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(213) E3S Web of Conferences 7, 04023 (2016) FLOODrisk 2016 - 3rd European Conference on Flood Risk Management. DOI: 10.1051/ e3sconf/2016 0704023. 7 References

(214) factores de convectividad para el cálculo de las relaciones intensidad-duración-! " Maestría. Universidad Nacional Autónoma de México. 2. # $% & '(( daños por inundación en zonas habitacionales de )%*!'(

(215) ++ 3. Chen, C. L. (1983). Rainfall Intensity-DurationFrequency Formulas. Journal of Hydraulic Engineering, ASCE, Vol. 109, No. 12, December 1983, pp. 1603-1621. Figure 19. Severity 4. ,- . " +//0 17 8'! McGraw-Hill Interamericana, S.A., Colombia. 6 % % 6 # 8 5. 98:;

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(219) @( hietogramas correspondientes a diferentes periodos ! AA. B Hidráulica, San José, Costa Rica. 7. Maidment, D. R. (1993). Handbook of Hydrology. McGraw-Hill Inc., USA. 8. Metodología para la Elaboración de Mapas de Riesgo por Inundaciones en Zonas Urbanas. Centro Nacional de Prevención de Desastres. Serie: Atlas Nacional de Riesgos. Fenómenos Hidrometeorológicos. Marco Antonio Salas, Julio 2011. 9. OMM, Gestión Integrada de Crecidas: Documento Comceptual. Organización Meteoorológica Mundial. Figure 20. Expected Annual Damage OMM-No.1047. Ginebra, Suiza 2009. 10. OMM, Tercera Conferencia Mundial sobre el clima, Ginebra, Suiza, 31 de agosto-4 de septiembre de 2009. 6 Conclusions 11. Paoli, Carlos U. Curso Gestión Integrada de Crecidas, Facultad de Ingeniería y Ciencias Hídricas6 #

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