Rivers are known as the white gold in Nepal. Rivers have been used to generate hydroelectricity. For example, Sunkoshi, Marshyangdi and Trishuli are some of the leading hydroelectricity projects in Nepal. Since Nepal is an agricultural country, the multipurpose river projects have eased the farmers in the terai and some hilly regions in irrigation and having multiple farming. Besides, these projects also have helped in the supply of drinking water in many parts of Nepal. Some of the big rivers like Narayani and Kali Gandaki have also provided a good navigation service to facilitate the villagers and the tourists. Another important use of rivers in Nepal is the most famous rafting sport. Mostly Bhote Koshi, Karnali and Trishuli are well known for rafting. They are helping Nepal to earn a substantial foreign currency which adds to the lions share of the national economy.