Explanation:

• On November 29, 2020 Trivendra Singh Rawat, Chief Minister(CM) of Uttarakhand inaugurated the Suryadhar lake on Jakhan river at Doiwala, Dehradun. 
• The lake has been named after social worker Gajendra Dutt Naithani.

Key Info About Suryadhar lake
Characteristics

• It is 550 metres long, 28 metres wide and 10 metres deep with a capacity of 77,000 cubic metres.

About Uttarakhand:

• Bird Sanctuary– Pangot and Kilbury Bird Sanctuary
• Stadium– Indira Gandhi International Sports Stadium