The main geographic feature of the district is the Western Ghats or Sahyadri range, which runs from north to south through the district. Between the Sahyadris and the sea is a narrow coastal strip, known as the Payanghat, which varies from 8 to 24 kilometres (5.0 to 15 mi) in width. Behind the coastal plain are flat-topped hills from 60 to 100 meters in height, and behind the hills are the ridges and peaks of the Sahyadris. East of the Sahyadris is the Balaghat upland, part of the vast Deccan plateau. Moisture-bearing winds come from the west, and yearly rainfall averages 3,000 millimetres (120 in) on the coast, and as high as 5,000 millimetres (200 in) on the west-facing slopes of the Sahyadris. East of the crest is the rain shadow of the Sahyadris, which receive as little as 1,000 millimetres (39 in) annually. Much of the rain falls in the June–September Monsoon. Four principal rivers drain westwards from the crest of the Sahyadris to the sea; from north to south they are the Kali, Gungawali, Aghanashini and Sharavati. These rivers form numerous waterfalls, the most famous of which is Jog falls, on upper reaches of the Sharavati in neighboring Shimoga district, other famous waterfalls include Unchalli Falls, where the river Aghanashini drops 116 meters, Magod Falls, where the Bedti river plunges 180 meters in two leaps, Shivganga falls, where the river Sonda (Shalmali) drops 74 meters, and Lalguli falls and Mailmane falls on the river Kali. In the lowlands, these rivers form wide estuaries, extending several kilometers inland from the coast
