16th Avenue SE Roller Gate
- Completed 2020
- Rolls across road to keep water in river
- Room to store gate behind flood wall
- Protects to 2008 flood volume
- 45 minutes to close gate
- Similar gate planned for west side of bridge in 2022
- Completed 2019
- Approximately ½ mile long
- Stretches from Linn County Solid Waste Agency to 16th Avenue SW
- Approximately 16-20 feet tall on average
- Provides protection to a river elevation up to 19.5 feet
- Once entire Flood Control System is complete and it's tied into future segments: provides protection to 2008 flood volume
- Includes 12' wide walking/bike trail
- Completed: June 2018
- Situated along O Avenue & Ellis Blvd NW.
- Includes greenway space, benches, and a memorial wall.
- The plaza also features a distinctive gateway that welcomes residents and visitors to the site.
- Privately-funded "West Side Rising" sculpture pays tribute to neighborhood recovery and persistence
Lot 44 Pump Station
- Construction: 2016–Spring 2018
- Located between 8th and 12th Avenues NE in New Bohemia District.
- Pumping capacity: 12,000 gallons per minute at opening, with capacity for expansion.
- Aesthetics designed to complement character of neighboring district.
- Includes gate to prevent the river from backing up into the neighborhood through storm sewers.
- Protects community from rain inundation by pumping rainwater back into the Cedar River.
Sinclair / NewBo Levee
- Stretches from the African American Museum to Alliant Substation.
- Just under ½ mile long.
- 13–23 feet tall on average, 130 feet at its widest.
- Provides immediate protection of a river surge up to 20 feet; protection to 2008 volume upon Flood Control System completion.
- Includes a 12 foot wide concrete bike and pedestrian trail.
- Includes walls next to 16th Avenue NE for a future gate.
Sinclair Detention Basin
- Construction: 2016 – 2017, grading/aesthetics 2018
- 4.4 acres, used to store excess rain water until it can be safely pumped back into the river
- Can safely store rainwater up to 4 feet deep
- Includes paved lot for excess snow storage during snow removal efforts
Sinclair Pump Station
- Sized for 3 pumps
- Capacity of 2,500 gallons per minute at opening, with expansion capability
- Used when underground flood gates are closed and rain water needs to be pumped back into the river
- Provides a pedestrian walkway along the Cedar River between 2nd and 3rd Avenues
- Recreation blended with protection.
- Designed to take on water, the amphitheater
also provides a signature outdoor concert and event venue.
Reducing Our Flood Risk
Since 2008, the City has significantly reduced its flood risk. A history of risk reduction efforts includes
- Developed interim flood control plan
- Removed 1,300+ properties from the flood zone
- Adopted new flood insurance rate maps
- Updated Floodplain Management Ordinance
- Secured GRI state funding of $267M
- Improved sanitary sewers and raised the City’s wells
- Upgraded and protected the Water Pollution Control Facility
- Completed interim levee repairs
- Raised buildings flooded in 2008
- Raised two bridges over Prairie Creek
- Designed and constructed the McGrath Amphitheatre levee
- Designed the CRST building to include a flood wall
- Completed improvements to the sanitary sewer system and watershed management practices.
- Sanitary sewer and watershed management improvements (ongoing)
Completed since Master Plan was adopted:
- CRST Riverwalk
- Sinclair Pump Station
- Sinclair Detention Basin
- Sinclair/NewBo Levee
- Lot 44 Pump Station
- Northwest Gateway & Memorial Plaza