Analysis of information sources in references of the Wikipedia article "Lower Mainland" in English language version.
A Nooksack flood in 1990 swamped the Whatcom Road interchange and western portions of Sumas Prairie. Such a flood is expected to take place every 35 years or so. There are worries that a larger flood event would change the course of the river entirely, diverting it north into the channel of the much-smaller Sumas River.
On June 16, the lower Fraser peaked at Hope, with a maximum instantaneous flow of 3400 cubic metres per second and a maximum elevation of 7.1 metres, well above the danger level of 6.1 metres.
The Lower Mainland has experienced two major Fraser River floods in just the past 130 years. The largest flood on written record was in 1894, and the second largest was in 1948. Earlier large-scale floods are also part of the oral history of Coast Salish First Nations.
In 1972, the Fraser River again experienced record flood waters – the second highest in recorded times with a discharge of 12,900 cubic metres per second and a maximum height of 10.141 meters at Hope on June 16. Wardle Street and part of Seventh Avenue were submerged, and on Tom Berry Road 10 houses were flooded and families were forced to evacuate their properties. Pumps were brought in to remove water and residents were able to return home after approximately a week.
In 1990, the Nooksack River in northern Washington overflowed its banks, with its waters flooding over the border and into Sumas Prairie. The flood cut off Highway 1, and also inundated the towns of Everson and Sumas.
The Lower Mainland has experienced two major Fraser River floods in just the past 130 years. The largest flood on written record was in 1894, and the second largest was in 1948. Earlier large-scale floods are also part of the oral history of Coast Salish First Nations.
On June 16, the lower Fraser peaked at Hope, with a maximum instantaneous flow of 3400 cubic metres per second and a maximum elevation of 7.1 metres, well above the danger level of 6.1 metres.
In 1972, the Fraser River again experienced record flood waters – the second highest in recorded times with a discharge of 12,900 cubic metres per second and a maximum height of 10.141 meters at Hope on June 16. Wardle Street and part of Seventh Avenue were submerged, and on Tom Berry Road 10 houses were flooded and families were forced to evacuate their properties. Pumps were brought in to remove water and residents were able to return home after approximately a week.
A Nooksack flood in 1990 swamped the Whatcom Road interchange and western portions of Sumas Prairie. Such a flood is expected to take place every 35 years or so. There are worries that a larger flood event would change the course of the river entirely, diverting it north into the channel of the much-smaller Sumas River.
In 1990, the Nooksack River in northern Washington overflowed its banks, with its waters flooding over the border and into Sumas Prairie. The flood cut off Highway 1, and also inundated the towns of Everson and Sumas.
