Urban Drainage and Flood Control District | Denver, Colorado
Originally built in 1974 to provide safe recreation passage at a dam, Confluence Park was rebuilt in 1995 to lower the regulatory flood plain. As a result, a large land area of lower downtown Denver was made available for development, spurring nearly $4 billion in private development. It is a low-maintenance run of river urban park with virtually no operation cost.
- Grouted rock construction withstands significant flooding without damage.
- Continuously moving waters resist unwanted sediment accumulation.
- Downstream reach is stable and has experienced no significant bed degradation.
The open and straightforward rapids dissipate 8 feet of hydraulic drop over 400 feet and are rated a Class III by whitewater guidebooks. The park has been in use for 30 years by skilled and unskilled users without serious injury.