Jog Falls, Gerosoppa Falls or Joga Falls is the second-highest plunge waterfall in India, Located in Sagara taluk, Shimoga and Uttara Kannada district border . These segmented falls are a major tourist attraction. The Western Ghats gives rise to the Sharavati river that plunges from a height of 829 feet in four magnificent cascades namely Raja, Rani, Roarer and Rocket. Jog falls, being the tallest waterfalls in India is situated in the dense evergreen forests, 16kms from Talguppa nearest railway station, Shimoga district, Karnataka.
Jog Falls is created by the Sharavathi River dropping 253 m (830 ft), making it the second- highest plunge waterfall in India after the Nohkalikai Falls with a drop of 335 m (1100 ft) in Meghalaya.
Sharavati, a river which rises at Ambutirtha, next to Nonabur, in the Thirthahalli taluk and takes the northwesterly course by Fatte petta, receives the Haridravati on the right below Pattaguppe and the Yenne Hole on the left above Barangi. On arriving at the frontier it bends to the west, precipitates itself down the Falls of Gersoppa, and passes that village (properly Geru-Sappe), which is some 29 kilometres distant, discharging into the sea at Honnavar in North Kanara.
The Sharavati, flowing over a very rocky bed about 250 yards wide, here reaches a tremendous chasm, 290 m (960 ft) deep, and the water comes down in four distinct falls. The Raja Fall pours in one unbroken column sheer to the depth of 830 ft (250 m). Halfway down it is encountered by the Roarer, another fall, which precipitates itself into a vast cup and then rushes violently downwards at an angle of forty-five degrees to meet the Raja. A third fall, the Rocket, shoots downwards in a series of jets; while the fourth, the Rani, moves quietly over the mountain side in a sheet of foam. The Tourism Department has built steps from the viewpoint to the bottom of the hill where the waterfall can be seen at the opposite side. There are approximately 1400 steps built to reach the bottom of the hill.
Associated with the waterfall is the nearby Linganmakki Dam across river Sharavathi, and the hydro-electric power station that it serves. The power station has been operational since 1949, and is, at 1200 MW capacity, one of the largest hydro-electric stations in India and a significant source of electric power for Karnataka.