Community Update #2 - December 2025 Atmospheric River – Pemberton Valley

This is the second community update regarding the Pemberton Valley atmospheric river event.

The Squamish-Lillooet Regional District (SLRD) continues to collaborate with our partners at Lil’wat Nation, the Village of Pemberton and the Pemberton Valley Dyking District in response to current weather scenarios affecting the Pemberton Valley.

The SLRD Emergency Operations Centre (EOC) is activated to monitor the situation and take appropriate action as necessary. 

The SLRD has issued an Evacuation Alert for one property. This Evacuation Alert remains in place.

As of Monday afternoon, the Pemberton Valley Dyking District is reporting that while there was significant rainfall overnight December 14/15, river levels are trending down as of Monday afternoon. The Pemberton Valley Dyking District will continue to monitor river levels overnight.

Key information and updates

Weather Warning

NEW: Rainfall warnings previously issued by Environment and Climate Change Canada were lifted on December 15.

Flood Watch

The Flood watch issued December 14 for the tributaries of the Lower Fraser including the Lillooet River and tributaries around Pemberton remains in place. 

  • Flood Watch means that river levels are rising and will approach or may exceed bankfull. Flooding of areas adjacent to affected rivers may occur.
  • A High Streamflow Advisory means that river levels are rising or expected to rise rapidly, but that no major flooding is expected. Fast-flowing bodies of water increase risk to life safety. Minor flooding in low-lying areas is possible.

Highway Impacts

NEW: Highway 99 re-opened as of 12:30 p.m. on December 15 between Main Street and Seton Lake Road for 90.2 kilometres (one kilometre north of Pemberton to Lillooet). Please remember that conditions can change rapidly and closures may result at any time.

NEW: Road 40 is closed until further notice between Tyaughton Lake Road and Yalakom Road due to heavy rockfall. No detour is currently available. Assessment is underway. 

Trail Safety

NEW: The Village of Pemberton announced that due to ongoing heavy rainfall and rising water levels, the One Mile Lake Park boardwalk and trails around the lake are temporarily closed for public safety.

NEW: The Valley Loop and Riverside Trail along Airport Road are closed until further notice.

We do not anticipate issuing another update today, unless the situation evolves and new information becomes available.

Stay informed

During an emergency, the SLRD issues Evacuation Alerts and Evacuation Orders as necessary. This information is shared through multiple channels:

Additional Resources

EVACUATION ALERT SLRD AREA C Atmospheric River Event
Applicable communities
Electoral Area C
Media contact

Communications and Engagement
Squamish-Lillooet Regional District
Phone: 604.894.6371 x264
Email: communications@slrd.bc.ca