Tactic
Adaptation
Limit Exposure to Flash Floods
Move activities away from high-risk areas
Options
...by planning the removal or reduction of structures and people in flood zones (managed retreat).
...by locating structures in the site above the current 100- or 200- year flood level.
...by raising a portion of the site higher than the current 100- or 200-year flood level.
...by eliminating essential infrastructure or elements from low lying areas.
...by designing high clearance bridges far above projected flood levels to avoid strainers that catch debris and create extra pressure.
Case Study
As part of Turenscape’s design for Yanweizhou Park, a serpentine pedestrian bridge snakes across two seasonally flooded rivers. The main bridge is elevated above the 200-year flood level, while auxiliary ramps connecting to the riparian wetland park below can be submerged during periodic flood events.
