Anderson Perry & Associates wins Project of the Year for
Crooked River Wetlands for City of Prineville
The City of Prineville’s Crooked River Wetlands Complex demonstrates a new approach for dealing with wastewater. Constructed for just eight million dollars, a fraction of the sixty-two million dollar price tag of a previously recommended mechanical treatment plant—the complex utilizes natural processes found in the wetlands to further treat the reclaimed water.
Designed to operate entirely by gravity, the wetlands offer habitat to numerous plants, wildlife, waterfowl, and insects that support a healthy ecosystem.
The wetlands in the complex were designed to augment the flow of water into the adjacent Crooked River. After the water is polished by the micro-organisms growing on the plants in the wetland cells, the water is cooled as it flows underground into the Crooked River, providing as much as two million gallons per day of clean, cool water to aid in the reintroduction of steelhead and salmon.
This approach met with skepticism from regulatory agencies during the permitting process. Anderson Perry and the City conducted a number of studies to convince the agencies that this approach would not adversely affect area groundwater. The City agreed to meet extremely rigid monitoring requirements and increased water quality standards in order to secure permits.
Since beginning, the system is exceeding the stringent permit requirements and has helped pioneer a new permitting process for those interested in this non-traditional method for treating and disposing of wastewater.
Click here for a PDF of the 2018 Engineering Excellence Awards magazine published by the DJC.
2018 Engineering Excellence Award winners (one page)
Slideshow of all the 2018 entries featuring each project’s display panel.