The Delhi Jal Board has built modular rainwater harvesting trenches and recharge wells along the Yamuna River corridor. These structures capture rainwater runoff during monsoon and channel it into aquifers, reducing city flood risk and replenishing groundwater. Over 5,000 cubic meters were harvested in the first storm season. Monitored groundwater levels in nearby tubewells showed a 10% rise. With public signage explaining the structures, the board plans to scale installations along urban water bodies in the Capital Region.