Lake Errock is an unincorporated community in the Fraser Valley region of southwestern British Columbia.

Housing exists primarily on the northwestern shore of the same named lake,[1] which lies southwest of Harrison Bay.

[4] In the late 1880s, Felix Parent was the initial pioneer settler,[6] acquiring an acreage now fronted by the gas station.

[8] The Squakum Ranch, at the end of present Malcolm Rd, was a smaller commercial orchard on the banks of the Fraser River.

[12] In the early 1920s, Charles and Miriam Bell, who arrived and farmed the Parent property,[13] were among the few families who remained as permanent residents during the 1930s.

[14] G. Robert (Bob) Webster established a general store around 1939[23] and became postmaster when the post office reopened in 1940.

The Sq’ewlets First Nation, which has experienced problems with sewage disposal, might also benefit from the proposed wastewater treatment plant.

[31] Residents opposed to increased development near the water, regard the neighbourhood as a small bedroom community.