City highlights flood-risk assessment and new flood model to guide resilience planning

Fairfax City staff described development of a flood-risk assessment and a new computational flood model intended to improve planning and resilience as extreme weather events become more frequent.

"We're helping in developing a new flood model, which is a computational tool that can provide better and more accurate information in terms of flooding across the city," a climate and energy manager said. The speaker said the model will inform where systems need repair and help prioritize investments.

The briefing framed climate work as both mitigation and adaptation. Staff said flooding is the city’s most significant immediate climate concern because storm systems are becoming more frequent and intense, stressing older storm pipes and culverts designed to a different standard. "With urbanization and an increase in the intensity of precipitation, the systems are getting overwhelmed," the speaker said.

City staff described close collaboration with state agencies and said the climate and energy manager was brought on to support implementation of the city's climate goals. No policy change or funding appropriation was reported during the presentation; staff invited public feedback on planned projects and timelines.