# Grand Canyon flash flood disaster > Live situation record from CLSTR: https://clstr.news/situations/grand-canyon-flash-flood-disaster > Updated: 2026-09-09T02:46:38.000Z. Sources: 14. Developments: 2. On August 29, 2026, severe flash flooding struck the Bright Angel Canyon and Phantom Ranch areas of Grand Canyon National Park. The monsoon-driven event resulted in the deaths of two hikers and left one person missing. Emergency responders evacuated approximately 82 people, many via helicopter. The flooding caused significant infrastructure damage, including the destruction of nearly all footbridges across Bright Angel Creek and damage to the Transcanyon Waterline. This damage necessitated Stage 4 water restrictions on the South Rim and the closure of all overnight guest accommodations operated by park concessionaires. National Park Service officials expect to restore a reliable water supply within weeks. While the flood damaged the waterline, it did not affect most of a nearly complete $200 million upgrade to the 12.5-mile pipeline. Construction of a temporary water intake is scheduled to begin to match pre-flood pumping capacity. This incident follows previous pipeline failures in the area since August 2024. ## Timeline ### 2026-09-09: Grand Canyon water supply restoration expected in weeks National Park Service officials expect to restore Grand Canyon water supplies in weeks after a deadly flash flood, as work continues on a major $200 million pipeline upgrade. 6 sources. https://clstr.news/cluster/grand-canyon-water-supply-restoration-expected-in-weeks ### 2026-09-03: Grand Canyon flash floods kill two and cause major infrastructure damage Flash floods in Grand Canyon National Park have killed two hikers and left one missing. The disaster destroyed infrastructure, damaged the park's water supply, and forced major facility closures. 8 sources. https://clstr.news/cluster/grand-canyon-flash-flood-causes-deaths-and-major-infrastructure-damage --- Cite as: Grand Canyon flash flood disaster. CLSTR, https://clstr.news/situations/grand-canyon-flash-flood-disaster