Udawalawe National Park gets its name from Udawalawe reservoir that was built on Walawe river. Animals that were displaced due to the development were shifted to the national park. It is one of the oldest national parks in Sri Lanka that was established in the year 1972. The area where this national park is built over was earlier used by farmers for shifting cultivation but then they were removed from this area. This national park in Sri Lanka is especially known for being home to water birds and Sri Lankan elephants. You'll find a herds of more than 50 Sri Lankan elephants here and there are close to 600 of them in the park.