The reservoir Gobind Sagar is on the river

The Gobind Sagar reservoir is located on the Sutlej river in the Bilaspur and Una districts of Himachal Pradesh [c1][t2]. It was formed as a result of the construction of the Bhakra Dam, which is one of the highest concrete gravity dams in the world [c1][t4]. The reservoir is named in honor of Guru Gobind Singh, the tenth Sikh Guru [c1][t1]. It serves as a vital component of the Bhakra-Nangal multipurpose project, providing water for irrigation and hydroelectric power generation to states including Punjab, Haryana, and Rajasthan [c1][t6]. While a similarly named reservoir, the Gobind Ballabh Pant Sagar, exists on the Rihand river (a tributary of the Son), the specific 'Gobind Sagar' reservoir is uniquely associated with the Sutlej river system [c2][t6]. The reservoir extends approximately 90 km in length and is a significant site for tourism and pisciculture [t1][t3].

Sources

1. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 8: Energy Resources > Table 8.9 > p. 20
2. [2] https://en.wikipedia.org/wiki/Gobind_Sagar
3. [3] https://hpbilaspur.nic.in/tourist-place/gobind-sagar-lake/
4. [4] https://rupnagar.nic.in/tourist-place/bhakra-dam/
5. [5] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 8: Energy Resources > Table 8.9 > p. 22