Lake Kariba is in Zambia. It is one of the largest man-made lakes in the world and is located on the border between Zambia and Zimbabwe. The lake was created in the 1950s when the Kariba Dam was built across the Zambezi River, forming a large reservoir that extends for over 200 kilometers. The lake is an important source of hydroelectric power for both Zambia and Zimbabwe and is also a popular tourist destination, known for its scenic beauty and abundant wildlife. While the lake is located on the border between Zambia and Zimbabwe, the majority of its waters are in Zambia.