Uda Walawe National Park covers an area of 30,821 hectares, and includes a large reservoir, the Uda Walawe Tank, which is fed by the Walawe Ganga. The park is home to an estimated 500 elephants, best spotted by the river, streams or reservoirs. Other wildlife includes wild buffalo, sambar deer, mongoose, bandicoot, fox, water monitor, crocodile, and even the occasional sloth bear and leopard. Uda Walawe also has an Elephant Transit Centre, where orphaned and sick elephants are cared for until they are able to return to the park.