Reach 4 starts at US 36 and goes upstream through Lyons along both the South and North St. Vran Creeks. This reach includes the Town of Lyons and areas just upstream to the choke in the canyon along the South St. Vrain and to Apple Valley along the North St. Vrain. The Town of Lyons was severely damaged during the September 2013 flood event. The Flood destroyed the Town’s electrical systems and wastewater treatment facility, and damaged or destroyed nearly 30% of the Town’s housing stock. When the floodwaters breached the Town’s wastewater treatment facility, Lyons’ water supply was contaminated. Additionally, multiple sections of the St. Vrain Floodwaters destroyed Lyons Public Works facilities and equipment, and the Town Hall and Library.
Due to the complexity of this reach, it is split into three sub-reaches: Reach 4a (Apple Valley area), Reach 4b (South Saint Vrain from Andesite Quarry downstream to Old St. Vrain Road), and Reach 4c (Town of Lyons proper to US 36).
Creek Rehabilitation Plan for Apple Valley
Apple Valley, an approximately 2.5 mile stretch along the North Saint Vrain Creek, was severely impacted in the 2013 floods, with loss of life and property, realignment of the creek channel, significant scouring, erosion, and deposition of large amounts of debris. The SVCC is managing the flood recovery work to be completed in Apple Valley. The planning and design phase was led by S2o Design and Engineering; the final 30% design was complete in January 2017. The design portion of the project was funded by the Colorado Department of Local Affairs (DOLA) Community Development Block Grant – Disaster Recovery (CDBG-DR). Due to the complexity of funding and construction protocols the project area was divided into North and South construction sites. Construction began in the north on 12/11/2017 and weekly updates are emailed by Erika and posted on our website. Construction for Apple Valley North funded by DOLA, the Natural Resources Conservation Service (NRCS) Emergency Watershed Protection Program (EWP), and the Colorado Water Conservation Board (CWCB). Construction began in the south during the week of 11/7/2017 and weekly updates are emailed by Erika and posted on our website. Construction for Apple Valley South funded by Boulder County, local landowners, the Colorado Water Conservation Board (CWCB), DOLA, the Natural Resources Conservation Service (NRCS) Emergency Watershed Protection Program (EWP), and CEMEX. This project is an NRCS EWP project, and though most information for the project can be found on our website, there is more information on the funding sources and process available from the EWP program on.
Reach 4b Working Group
The Reach 4b Working Group was formed in May 2016 in response to stakeholder concerns about the many projects taking place in the reach. The first meeting was held on May 11 in Lyons. You can read more about that meeting and the outcomes on our Reach 4b working group page.
South Saint Vrain Project Area – SSV 1 & 2
South Saint Vrain Creek, between the Andesite Quarry to the Old South Saint Vrain Road, is a project area which was managed by Boulder County Parks and Open Space (BCPOS), who hired a design team led by Matrix Design Group. Within the design project area, there are two smaller reaches, SSV1 and SSV2, which were NRCS EWP projects. The design portion of this project was funded by DOLA’s CDBG-DR program. The final design for this project was finished in early 2017 and construction was completed on December 12, 2017. Construction was funded by the NRCS EWP, CWCB, and Boulder County. You can find a map of the two project areas and information about them on the EWP website. The Saint Vrain Creek Coalition provided with BCPOS with comments and feedback to be considered throughout their design process, which can be found below:
South Saint Vrain 3 (SSV3) Project Area
The SSV3 project area extended from the existing Old South Saint Vrain Road Bridge downstream to Bohn Park, and was one of the project areas identified as high priority by the NRCS EWP Program. The project was designed by Otak and funded by the EWP Program. The project had a 30% design plan at the end of 2016 and moved into construction in August of 2017. Construction was conducted by Naranjo Civil Constructors and overseen by the SVCC. It was funded by the NRCS EWP and sponsored by the Town of Lyons. Construction finished on November 6, 2017. More information can be found on the EWP website.
Confluence Area Project
The Confluence Area Project is located from 5th Avenue east to the North and South St. Vrain Creeks, and includes Evans Street west of 5th Avenue, and 3rd Avenue from Evans Street to Park Street. The project, managed by the Town of Lyons, includes the replacement of domestic water mains; replacement of sanitary sewer mains; installation of storm drains; reconnection of utility services; and the placement of concrete curb and gutter and asphalt pavement. The project is being conducted by DeFalco Construction. Xcel Energy’s contractor completed the gas line installation in July 2016, and DeFalco placed asphalt throughout the project area in October of 2016. Official updates from the Town of Lyons have slimmed but it is understood that the project has finished construction.
St. Vrain Creek Restoration Project
The St. Vrain Creek Restoration Project, managed by the Town of Lyons, consisted of river way improvements including rock formations and re-vegetation to reintroduce wetlands, slow the flow of the river, and create natural areas for fish and plants to thrive and support recreational use of the river. The project also reestablished pedestrian paths and access points for river users. The project, which was completed in April 2016, was constructed by Naranjo Civil Constructors and was funded by the CDBG-DR program.
LaVern M. Johnson (formerly Meadow) Park
On Friday, September 9, 2016 LaVern Johnson Park opened and was the first park to be restored since the 2013 flood. There is an abundance of recreational opportunities which include picnic areas, RV parking/tent camping, playground area, Lyons Whitewater Park, splash pad, an ice rink in the winter, there is plenty of room to escape and take in the beauty of Lyons no matter what the season. For more information on the park, visit the Town’s website.