The reserve is situated in the extreme north of the country, to the south of the road linking Bolgatanga and Navrongo. The topography is generally flat with an elevation of no more than 150 m. The Tankwidi river bisects the reserve and flows southwards to join the White Volta at the southern end of the reserve, on the border with the Northern Region. The site is characterized by Guinea Savanna woodland, with short trees, shrubs and grasses mainly of the tribe Andropogoneae. Dominant plant species include Combretum, Terminalia and Butyrospermum spp. There is a small plantation of teak Tectona grandis.
See Box and Table 3 for key species. Some 78 species have been recorded, including Bucorvus abyssinicus and Eupodotis melanogaster.
Non-bird biodiversity: None known to BirdLife International.
BirdLife International (2019) Important Bird Areas factsheet: Tankwidi Forest Reserve. Downloaded from http://www.birdlife.org on 25/03/2019.