Calumpit, is a 1st class municipality in the province of Bulacan, Philippines. According to the 2015 census, it has a population of 108,757 people, consisting of 29 barangays and governing an area of 5,625 hectares. The town is vulnerable to hydro-meteorological and geologic hazards, like floods, earthquakes and volcanic ash falls. The 70% of Calumpit is sandwiched by two major rivers. The Pampanga river from Cabanatuan down to Manila Bay and Angat River from Angat Dam down to Labangan Channel up to Manila bay. The barangay with the lowest elevation is barangay Sapangbayan and San Jose Pulo while the barangay with the highest elevation is barangay Pio Cruzcosa. The government constructed protective dikes. The Calumpit Pocket Dike, which covers barangay Poblacion, Sucol, Corazon, Balungao and parts of Calizon. The Calumpit – Plaridel Levee which covers the upstream of Metro San Marcos, which are barangays Balite, Palimbang, San Marcos, Pio Cruzcosa and Bugyon. The Calumpit-Hagonoy which covers the Labangan cutoff channel and barangay Iba Este, Calumpang and Longos. And lastly, the Apalit - San Miguel - Meysulao – Masantol Levee, which covers against the Pampanga river and covers Meysulao and San Miguel. Prior to the flooding historical data in the year 2015, at the month of October, Typhoon Lando causes huge casualties in the municipality of Calumpit. Affecting over 27,599 families dealt a total damage costing P39.652 million on the municipality’s agriculture and P23.130 million on the infrastructures. Followed by the typhoon Nona, which dealt over P15.077 million from the municipality’s agriculture and P17.7 million on the infrastructure affecting over 25,625 families.