Bed Stabilization
The purpose of channel bed stabilization is to reduce channel bed erosion by slowing stream flow to less erosive conditions while providing a stable platform for vegetation establishment. This will be accomplished through the construction of 22 grade control structures (also known as weirs, or low height dams) along the Wash within the next several years.
Completed Structures

- Upper Diversion Weir and Diversion Channel - completed 2008
- Monson Weir – completed 2002
- Visitor Center Weir – completed 2002
- DU Wetlands No. 2 Weir - completed 2009
- Pabco Weir – completed 2000
- Historic Lateral Weir – completed 2000
- Bostick Weir – completed 2003
- Calico Ridge Weir - completed 2004
- Demonstration Weir – completed 1999; however, the weir was moved and reconstructed as the Demonstration Replacement Weir in 2007
- Rainbow Gardens Weir – completed 2004
- Powerline Crossing Weir- completed 2006
- Fire Station Weir – completed 2000
- Homestead Weir - completed 2011
- Lower Narrows Weir - completed 2011
Planned Structures (with expected completion date)
- Archery Weir - 2014
- Demonstration Replacement Weir - 2013
- DU Wetlands No. 1 Weir – 2013
- Duck Creek Confluence Weir - 2013
- D-14 Extension Weir - 2015
- Silverbowl Weir – 2014
- Sunrise Mountain Outfall Weir – 2015
- Tropicana Outfall Weir – 2015
- Upper Narrows Weir – 2013