Post-Emergency Hazard Reports

Following a wildfire, the likelihood of occurrence of landslides, erosion, floods and snow avalanches within or downslope of the burned area can increase. The degree of hazard increase depends on various factors including the burn area, vegetation burn severity, soil burn severity, development of water-repellent soil, slope attributes, local hydrology, and local geomorphic conditions. The trigger for an event is often a significant high intensity rainfall. Elevated landslide and flooding hazards are both short-term (3 to 5 years) and long-term (until full forest regeneration). Short-term hazards relate to soil burn severity, development of water-repellent soil layers, increased overland flows, and sediment bulking. Longer-term hazards relate to increased Equivalent Clearcut Areas (ECAs) as a result of loss of overstory and possible effects of loss of tree root strength. (Springer Creek Fire Number 50372 - Post-Wildfire Analysis, 2007)
The following  links lead to more specific information regarding post wildfire hazards in the Regional District of Central Kootenay:

Morley Creek -  Post 2019 Debris Flood

Early in the morning on August 11, 2019 a debris flood occurred on Morley Creek. Debris blocked the highway culvert, overflowing onto the highway and causing damage to several properties downslope of the highway. The headwaters of Morley Creek were burned in 2017. A post-fire natural hazard assessment identified an elevated debris flow and flood hazard due to the fire impacts on the vegetation and soil.

The following PDF link provides further information on the Morley Creek Debris Floos event:
Morley Creek Debris Flood Event Report.pdf [PDF - 7 MB]

Post Wildfire Risk Analysis Reports

Geotechnical Hazard maps

Johnsons Landing - Post 2012 Landslide

One of the most devastating events in the RDCK occurred in Johnsons Landing on July 12, 2012 when a landslide tore through the community, taking the lives of four people and destroying four homes. A portion of the area remains under a Declaration of a State of Local Emergency.

The following PDF links provide further information on the Johnsons Landing Landslide:
Full Landslide Report [PDF - 47.8 MB]
Landslide Hzard Zone - Map [PDF - 2.1 MB] 
Snow Avalanche Risk Zone Mapping [PDF - 2.5 MB] 

Sitkum Creek – Post 2007 Wildfires

Springer Creek - Post 2007 Wildfires

Kemp Creek - Post 2007 Wildfires

The content on this page was last updated October 15 2019 at 12:06 PM