To determine which waterform on the map is not identified correctly, we need to verify the geographical locations associated with each letter:
A. Letter A -- Congo River: The Congo River is indeed located near the Democratic Republic of the Congo. This identification is correct.
B. Letter B -- Zambezi River: The Zambezi River is correctly located near Zambia and Zimbabwe. This identification is also correct.
C. Letter C -- Lake Malawi: Lake Malawi is indeed located near Malawi. This identification is correct as well.
D. Letter D -- Lake Tanganyika: Lake Tanganyika is located near the border of several countries, including Democratic Republic of the Congo, Burundi, Tanzania, and Zambia, but it is not near Uganda and Kenya. Therefore, this identification is incorrect.
Based on this analysis, the waterform that is not identified correctly is:
D. Letter D -- Lake Tanganyika