Building upon the 2005 Disaster Risk Management Plan (DRM,) Mumbai released an updated and more comprehensive disaster relief and emergency operations plan in 2010. Since the city of Mumbai is an extremely vulnerable city to major flooding events, the 2005 Disaster Relief Management plan focused largely on efforts related to flood control. In July of 2005, Mumbai experienced a massive flash flood that resulted in over 5,000 deaths and severe economic losses. In addition, the floods severely damaged basic municipal infrastructure and resulted in a widespread contamination of the city's water and food supplies, resulting in a significant human health crisis after the flood as well.
It was determined that three factors led to the scale of the disaster: an antiquated storm-water drainage system, uncontrolled and unplanned development in the northern suburbs, and the destruction of mangrove ecosystems. As a result, the 2005 DRM plan was designed to reduce the impact of future extreme weather events. Massive public works projects were established to help reduce the risk of the city to future floods and the consequences of such events. The plan also outlined steps to protect human health before, during and after these extreme weather events to help combat the spread of communicable diseases around the city. In addition, the plan also included the enhancement of advanced monitoring and warning systems that would alert Mumbai's population of nearly 13 million of impending disasters.