Dease Lake is a small community located in the Cassiar Country of the Northern Interior of British Columbia, Canada. Located only a few hours south of the Yukon border, it is located on Highway 37 at the south end of the lake of the same name. Dease Lake is the last major centre before the Alaska Highway, and also the junction to Telegraph Creek and the Grand Canyon of the Stikine.
Dease Lake Indian Reserve No. 9 is located nearby and is under the governance of the Tahltan First Nation band government. Partly due to the closing of the asbestos mine in Cassiar, Dease Lake's population continues to grow. The town has a school, various stores, fuel and service stations, hotels, a restaurant, a Northern Lights College campus, and local pub.
The town sees a large influx of visitors during the summer months from tourists on their way to the Alaska Highway. A majority of these tourists are from Canada or the United States. Dease Lake is also a destination for hunting and other wilderness activities.