British Columbia’s River Forecast Centre issued an upgraded flood warning for the Sumas River, a tributary of the Fraser River east of Vancouver on Sunday.
An updated bulletin says flows in the Sumas River are not anticipated to pose a hazard for flooding into Sumas Prairie, an area that was hard hit during the atmospheric rivers that swamped much of southwestern B.C. in November 2021, washing away bridges and spurring landslides that killed five people.
But in neighbouring Washington state, the bulletin says high flows on the Nooksack River have reached “local flood stage.”
It says “spillover” into the Sumas River watershed has
