The Samburu National Reserve is located on the banks of the Ewaso Ng’iro river in Kenya; on the other side of the river is the Buffalo Springs National Reserve in Northern Kenya. It is 165 km² in size and 350 kilometers from Nairobi and ranges in altitude from 800 to 1230m above sea level.  Geographically, it is located in Samburu District of the Rift Valley Province.
In the middle of the reserve, the Ewaso Ng’iro flows palm groves and thick riverine forests and provides water without which the game in the reserve could not survive in the arid country.
The Samburu National Reserve was one of the two areas in which conservationists George Adamson and Joy Adamson raised Elsa the Lioness made famous in the best-selling book and award winning movie Born Free.
The Samburu National Reserve is also the home of Kamunyak, a lioness famous for adopting Oryx calves.
The park lies in Central Kenya, 140km north-west of Nairobi, in Nakuru district of the Rift Valley Province. The ecosystem comprises of the lake, surrounded by mainly wooded and bushy grasslands. The park supports a wide ecological diversity with Flamingos (Greater and Lesser) and other water birds being the major attractions of the area.
The ecosystem provides for about 56 different species of mammals including the white rhino and buffaloes and a variety of terrestrial birds numbering nearly 450 species.