The Sumas River is a tributary of the Fraser River, and flows north from Washington State into the Fraser, east of Abbostford.1 The Sumas takes its name from the Halkomelem word for big flat opening.2
Originally, the Sumas flowed into Sumas Lake, a mosquito-infested body which provided
an extremely unpleasant environment for the Royal Engineers working in the Fraser
Valley: night and day the hum of these blood-thirsty tyrants was incessant…it was utterly
impossible to work or write, one's entire time being occupied in slapping, stamping,
grumbling, and savagely slaughtering mosquitos.3 The large, shallow lake was drained in the 1920s to expand agricultural land and
to reduce mosquito infestations.4
1. Sumas River,BC Geographical Names Information System.
2. G. P. V. Akrigg and H. B. Akrigg, British Columbia Place Names (Vancouver: UBC Press, 1997), 259.
3. G. P. V. Akrigg and H. B. Akrigg, British Columbia Chronicle, 1847-1871 (Victoria: Discovery Press, 1977), 114.
4. Akrigg and Akrigg, British Columbia Place Names, 259.