Flood risk assessment. Case of study: Motozintla de Mendoza, Chiapas, Mexico

Due to its geographical location, the community of Motozintla de Mendoza (Motozintla) in the State of Chiapas, Mexico, is continuously exposed to the impact of natural hazards. In this work, we assessed the flood risk of Motozintla considering the structural, socioeconomic, organizational, and global (structural, socioeconomic, and organizational) vulnerabilities. In addition, we also measured the local risk perception. Spatial maps were generated to determine the most vulnerable and risk areas of this community. Our results indicate that the population has a high level of risk to flooding mainly because (1) the majority of the local houses has high structural vulnerability; (2) a high percentage of the families has a daily income less than the official Mexican minimum wage and lacks of basic public services as well as of proper social security services; (3) most of the community does not know any existing Civil Protection Plan; and (4) the community organization for disaster mitigation and response is practically non-existent. For these reasons, we believe that it is necessary for local authorities to establish in the short-term, preparedness, mitigation and response plans as well as land-use measures to reduce the risk to floods in Motozintla

Vulnerability and Risk in Valle de Chalco Solidaridad, Estado de Mexico, Mexico. Case Study: El Triunfo, Avandaro and San Isidro

Los asentamientos humanos irregulares localizados en los límites de las grandes ciudades usualmente tienen niveles de vulnerabilidad altos y en algunos casos la exposición a peligros naturales y antrópicos resultan en severos daños a la población. Valle de Chalco Solidaridad (VCS) es ejemplo de este tipo de comunidades. VCS es un municipio del Estado de México, México, localizado en el antiguo lago de Chalco, al este de la Ciudad de México. El ambiente natural de VCS se modificó dramáticamente debido a la sobreexplotación de los mantos acuíferos locales que ha causado severos problemas de subsidencia en la mayor parte de su territorio. Las inundaciones son también comunes en VCS, principalmente asociadas a fracturas del canal “La Compañía” (CLC) causando daños severos a la población local. Los peligros mas comunes son la subsidencia y las inundaciones aunque, debido a su localización geográfica, VCS se encuentra también propensa al impacto de sismos originados en la zona de subducción de México. Hasta 2010, CLC era un canal de desagüe al aire abierto que colecta agua doméstica de dos municipalidades en el Estado de México: Valle de Chalco Solidaridad y Chalco. En el presente, CLC es un canal de desagüe entubado

Daily Precipitation Data for the Mexico City Metropolitan Area from 1930 to 2015

The Metropolitan Zone of Mexico City, as well as the associated basin, includes the territories of Mexico City, some municipalities of the State of Mexico and the state of Hidalgo. In addition, this area is the most densely populated in Mexico. The region is influenced by mid-latitude and tropical weather systems and is vulnerable to extreme hydrometeorological events. In this context, we developed a dataset from the records of 136 geolocated sites that includes daily precipitation data from the CLImate COMputing (CLICOM) project and the Mexico City Water System. The data spans the period from 1930 to 2015 for the rainy months (June–October) from stations with records of 20 or more years. In each recording site, automatic and manual data quality control were performed to verify the consistency of the daily precipitation data. We believe that our highly dense precipitation dataset will be useful for climate, trend and extreme events analysis. Additionally, the data will allow validating simulations of numerical atmospheric models. The dataset is public, and it was previously used in other research to determine areas susceptible to flooding due to heavy rain events and to develop a web mapping application of daily precipitation data

Daily Precipitation Data for the Mexico City Metropolitan Area from 1930 to 2015

The Metropolitan Zone of Mexico City, as well as the associated basin, includes the territories of Mexico City, some municipalities of the State of Mexico and the state of Hidalgo. In addition, this area is the most densely populated in Mexico. The region is influenced by mid-latitude and tropical weather systems and is vulnerable to extreme hydrometeorological events. In this context, we developed a dataset from the records of 136 geolocated sites that includes daily precipitation data from the CLImate COMputing (CLICOM) project and the Mexico City Water System. The data spans the period from 1930 to 2015 for the rainy months (June–October) from stations with records of 20 or more years. In each recording site, automatic and manual data quality control were performed to verify the consistency of the daily precipitation data. We believe that our highly dense precipitation dataset will be useful for climate, trend and extreme events analysis. Additionally, the data will allow validating simulations of numerical atmospheric models. The dataset is public, and it was previously used in other research to determine areas susceptible to flooding due to heavy rain events and to develop a web mapping application of daily precipitation data