Slocan Lake is a natural freshwater lake situated in the Slocan Valley of the West Kootenay region in the southeastern interior of British Columbia, Canada. The lake extends approximately 39 km (24 mi) in length and 2.7 km (1.7 mi) in width, covering a surface area of 69.29 km² (26.75 sq mi). Its maximum depth reaches 298 m (978 ft), with an average depth of 171 m (561 ft), and it holds a water volume of about 11.85 km³ (2.84 cu mi). The lake lies at an elevation of roughly 542 m (1,778 ft) above sea level.
Hydrology
The primary inflows to Slocan Lake are Bonanza Creek, Wilson Creek, Carpenter Creek, and Seaton Creek. Water drains from the lake via the Slocan River, which flows southward through the Slocan Valley before joining the Kootenay River near South Slocan. The lake’s catchment area is part of the larger Kootenay River basin.
Settlements
Communities located on the lake’s shores include the village of Slocan (commonly referred to as Slocan City), New Denver, Silverton, Rosebery, and the locality known as Hills. British Columbia Highway 6 runs along the eastern shoreline, providing road access to these settlements.
Historical Note
On 1 January 1947, Canadian Pacific Railway locomotive No. 3512 sank in Slocan Lake after the barge transporting it capsized. The wreck, along with associated rolling stock, remained at the lake bottom until it was located in 2020.
Surrounding Geography
The lake is flanked to the west by the Valhalla Range, much of which is protected within Valhalla Provincial Park. To the east rise the mountains that were central to the early 20th‑century “Silvery Slocan” silver rush, a period that saw extensive steamboat and railway activity in the region. The lake’s shoreline totals approximately 84 km (52.3 mi), though exact measurement is ambiguous due to the coastline paradox.