Kootenay Lake is a large, freshwater lake located in southeastern British Columbia, Canada. It stretches approximately 100 kilometers (62 miles) and is surrounded by the stunning Kootenay Mountains. The lake is fed by several rivers, including the Kootenay River, and is known for its clear blue waters and diverse ecosystems. The lake is a popular destination for outdoor activities such as fishing, boating, and hiking. It is home to various species of fish, including rainbow trout and bull trout. The surrounding area features charming towns like Nelson and Ainsworth Hot Springs, which offer visitors a glimpse of local culture and history.