Wetlands play a crucial role in flood control by acting as natural sponges that absorb and store excess water during heavy rainfall or flooding events. They help in reducing the intensity of floods by slowing down the flow of water, allowing it to spread out and be absorbed by the wetland vegetation and soil. This helps in regulating water levels, reducing the risk of downstream flooding, and protecting communities and infrastructure from the impacts of floods. Additionally, wetlands also help in filtering and purifying water, improving water quality as it slowly makes its way back into rivers and streams.