Rainwater management refers to the strategies and practices used to collect, store, and utilize rainwater effectively. This approach helps reduce flooding, erosion, and water pollution while promoting sustainable water use. Techniques include rainwater harvesting systems, green roofs, and permeable pavements, which allow rainwater to infiltrate the ground rather than run off into storm drains. Effective rainwater management can also enhance groundwater recharge and provide a supplementary water source for irrigation and non-potable uses. By implementing these practices, communities can improve their resilience to climate change and reduce reliance on traditional water supply systems, benefiting both the environment and local economies.