The way that cities relate to water—both its abundance and its scarcity—is changing dramatically. Urban hydrological systems, which were once thought to be predictable and controllable, are currently under tremendous strain from a combination of factors (Abera 2025), including growing urbanization, climate change, and the gradual deterioration of aging infrastructure. There is less space for absorption or delay when droughts last longer, rainfall episodes are more intense, and impermeable surfaces proliferate. Cities all around the world are stuck between water abundance and water insecurity, and they are both drowning and running dry. Static infrastructure and conventional planning methods are becoming less appropriate in this unstable new normal.