The government employed staff to routinely maintain the streets and its drainages to avoid the streets being dirty. Poorly drained stormwater forms stagnant pools that provide breeding sites for disease vectors. … Poor drainage can lead to flooding, resulting in property loss, and people may even be forced to move to escape floodwaters. Flooding may also damage water supply infrastructure and contaminate domestic water sources.
The main way to reduce flooding is to help maintain the drainage systems. Do not put anything in the ditches or pipes. Keep the ditches clean of leaves, branches or other debris that can wash downstream and block up the system.