A post fire hazard and risk assessment for critical infrastructure

Cameron Peak Fire Debris Flow Risk Assessment

The Cameron Peak Fire burned 84,443 hectares of land in Larimer County, Colorado. This fire, like others around the world, creates a new threat of post-wildfire debris flows and floods to residents and infrastructure downslope of the burn area. The Larimer County Office of Emergency Management approached us to quantify the hazard and risk to residential houses in the area.

Using DebrisFlow Predictor, our Colorado Geohazards team developed a regional model for several of the most severely burned watersheds in Larimer County. Results from the model provided the client with inundation, depths, and volumes for debris flows that could impact homes within the county. Our scientists and engineers collaborated to produce designs for the properties impacted. The model was tested against an actual debris flow that occurred just outside our study area and accurately predicted the extents and depths of the debris flow—clearly demonstrating its effectiveness for predicting future debris flows.

Here at Stantec, we’re committed to reducing the impact of debris flow hazards for the betterment of all, including the communities in Larimer County.