It is said that the left eye (Nain) of Sati fell here and this gave rise to patron deity of town Nainital . It is said that the lake is formed in the emerald eye shape .
Naina Devi temple is located at the northern end of the lake . Thus name of Nainital derivated from Naina and the tal (Lake).
The reserve was renamed Ramganga National Park in 1954–1955 and was again renamed in 1955–1956, Corbett National Park, after author and naturalist Jim Corbett.
The name Mussoorie is often attributed to a derivation of mansūr, a shrub which is indigenous to the area. The town is often referred to as Mansuri by Indians.