Kalahari Acacia-Baikiaea woodlands Kalahari Acacia-Baikiaea woodlands Kalahari Acacia-Baikiaea woodlands is an ecoregion located in Botswana, northern Namibia, South Africa and Zimbabwe. These woodlands cover the center of southern Africa, from northern Namibia diagonally through to southeast Botswana and just into the Tuli Block of South Africa. In Botswana there is another area running north from the Okavango Delta and the Makgadikgadi Pan towards the border of the Chobe National Park and then east to the border with Zimbabwe. All this is semi-arid sandveld with little surface water. Droughts occur approximately every seven years. Rainfall, when it occurs, is mostly in the summer, from
High Desert (California) the following regions: Other parts of the San Bernardino County portion include the northeastern reaches of the High Desert, where the Fort Irwin National Training Center and the Searles Valley are located, and the far eastern edge of the state where places like Needles and Earp are located along the Colorado River. San Bernardino County's portion of the High Desert region contains the most land mass of the four involved counties, making up approximately 70% of the total county's area. The major metropolitan centers in the region are primarily centered on the cities of Lancaster and Victorville. Lancaster, the largest