Peak Engineering updates Flagstaff on Spruce Wash flood mitigation project progress

The Flagstaff City Council's recent work session highlighted significant progress on the Spruce Wash projects, a critical infrastructure initiative aimed at mitigating flooding in the area. The update, presented by Peak Engineering co-owner, emphasized the collaborative efforts that have taken place since the devastating flooding events of 2021, which affected neighborhoods like Paradise, Grand View, and Sunnyside.

The Spruce Wash projects were initiated in response to the 2019 Museum Fire, which burned nearly 2,000 acres and increased the risk of flooding in the watershed. Following the floods, city officials and various stakeholders, including the Coconino County Flood Control District and the U.S. Forest Service, came together to devise a comprehensive mitigation strategy. This collaboration led to the successful passage of Proposition 441 in 2022, which secured $26 million for infrastructure improvements with an impressive 76% voter approval.

The total investment in the Spruce Wash projects is projected to reach $56 million, with over $8 million in grant funding from FEMA, the Forest Service, and the Army Corps of Engineers. This funding will support a suite of nine improvements designed to enhance flood resilience and infrastructure in the affected neighborhoods. Notably, the projects include significant upgrades to aging sewer lines and the construction of a new Wedge Detention Basin, which will help manage stormwater more effectively.

As construction progresses, the city is also taking the opportunity to improve roadways and pedestrian infrastructure. For instance, Grandview Drive has been redesigned to better manage water flow, reducing the risk of flooding in residents' yards. The city is also incorporating bike lanes and sidewalks into road repairs, enhancing safety and accessibility for all travelers.

Looking ahead, the council is preparing for the upcoming monsoon season, with plans to allow some stormwater to flow into the Wedge Detention Basin before the project is fully completed. This proactive approach aims to minimize flooding impacts on local residents.

The meeting underscored the importance of community engagement and collaboration in addressing the challenges posed by flooding and infrastructure needs. As the Spruce Wash projects move closer to completion, they represent a significant step forward in enhancing the safety and resilience of Flagstaff's neighborhoods.