Landslide accelerates as emergency declaration continues

During a recent government meeting, officials provided an update on the ongoing situation regarding the Greater Portuguese Bend Landslide Complex, emphasizing the need to continue the local emergency declaration due to escalating land movement. City geologist Mike Phipps reported that the region has experienced two consecutive years of significantly above-average rainfall, contributing to the current instability.

Phipps noted that while rainfall has decreased recently, the effects of previous precipitation are still being felt, with landslide velocities continuing to accelerate. Data from GPS land surveys indicate that the acceleration of the landslide has increased by approximately 41% compared to the previous monitoring period. Specific areas of concern include the Alberni Cove landslide, which is moving at a rate of 7 to 11 inches per week, and the Portuguese Bend landslide, which is shifting 9 to 12 inches weekly.

The Klondike Canyon landslide shows varied movement, with speeds ranging from less than an inch to 7 inches per week. A heat map presented during the meeting highlighted that the most significant movement is occurring in the central region of the landslide complex, where velocities reach up to 13 inches per week.

The council is considering adopting a resolution to extend the local emergency declaration, reflecting the ongoing risks posed by the landslide activity. The meeting underscored the importance of continued monitoring and mitigation efforts as the situation develops.