Buffer Lake is a large, shallow saltwater lake located in the Rural Municipality of Grant No. 372 in Saskatchewan, Canada, approximately 5 kilometres northeast of Vonda and roughly 90 kilometres northeast of Saskatoon. Sitting at an elevation of 508 metres (1,667 feet), the lake covers a surface area of approximately 2,602 hectares (6,430 acres) with a shoreline stretching about 37 kilometres (23 miles). As a salt lake with no primary outflow, Buffer Lake is part of the Saskatchewan River drainage basin and relies almost entirely on spring runoff and seasonal rainfall to maintain its water levels. During extended dry periods, extensive mudflats form around the lake's edges, dramatically altering its character and shoreline. The lake's saline nature is a defining characteristic that shapes everything about the ecosystem here, and anglers considering a visit should be aware that this is not a typical freshwater fishery.