FEMA Mitigation Best Practices: Chains of Wetlands Project Reduces Flood Risks in City of Dallas [open pdf - 216KB]
"After years of serious flooding, the city of Dallas made a decision to reduce flood risk by redesigning an important ecosystem located in the heart of the city. The outcome not only solved a major problem, but also resulted in a beautiful public outdoor recreation asset in the greater Dallas area. Historically, Dallas relied on structural flood control projects such as dams and levees with grass-carpeted floodways to lower flood risk. But a problem that was unique in origin had become an obstacle that was demanding a non-structural solution."
Federal Emergency Management Agency: http://www.fema.gov/