# Global urban stormwater and flood management > Live situation record from CLSTR: https://clstr.news/situations/global-urban-stormwater-and-flood-management > Updated: 2026-09-17T12:21:17.000Z. Sources: 5. Developments: 2. Global efforts to manage stormwater and mitigate urban flooding are focusing on both technological infrastructure and nature-based solutions. In France, the Hydroway system provides a permeable paving option using marble aggregates to reduce runoff and puddles. In Tunisia, the Ministry of Equipment has focused on preventive maintenance, treating over 2,600 km of waterways and clearing 70 hectares of hydraulic basins to prepare for rainy seasons, though urban pressure and illegal waste accumulation remain challenges. In Brazil, specifically the Perpétuo Socorro neighborhood in Macapá, uncontrolled urban expansion and inadequate drainage have increased flooding risks. To combat this, sustainable drainage tools like rain gardens—landscaped depressions designed to collect and filter water—are being utilized as green infrastructure to reduce the volume of runoff entering sewer systems. These natural solutions are supported by research from institutions such as Carleton University and recognized by the U.S. Environmental Protection Agency. ## Timeline ### 2026-09-17: Urban flooding management through sustainable drainage and rain gardens Urban flooding caused by soil impermeabilization is being addressed through sustainable drainage solutions like rain gardens, which use green infrastructure to manage stormwater runoff. 2 sources. https://clstr.news/cluster/urban-flooding-management-through-sustainable-drainage-and-rain-gardens ### 2026-09-12: Stormwater management and flood prevention efforts Stormwater management initiatives include the deployment of Hydroway permeable paving in France and extensive drainage maintenance by Tunisia's Ministry of Equipment to mitigate flood risks. 3 sources. https://clstr.news/cluster/stormwater-management-and-flood-prevention-efforts --- Cite as: Global urban stormwater and flood management. CLSTR, https://clstr.news/situations/global-urban-stormwater-and-flood-management