Osoyoos is a small town in the southern part of the Okanagan Valley on British Columbia's southern border with Washington state. It is in a region that is arguably the only hot desert in Canada (the Arctic is largely a desert by precipitation standards). Its terrain fits this image, with sandy hills, tumbleweeds, rattlesnakes, and a hot-summer, arid climate. Its population swells in the summertime due to vacationers and retirees. Osoyoos Lake may be Canada's warmest lake, with average summer water temperatures of 24°C (75°F). Though it is very desert-like, irrigation enhances its agriculture.