Ramganga (West) River originates from the western part of Dudhatoli reserve forest lying between Thailisain block in Pouri and Gairsain tehsil in Chamoli districts of Uttrakhand state. It is an important tributary of National River Gaga. The total length of the river is about 596 km. For first 200 km the river flows in Uttarakhand state and the remaining length falls in the state of Uttar Pradesh. Before it descends into plains, it is impounded by Kalagarh dam inside Jim Corbett National park.
Uttrakhand is a disaster prone State. Earthquakes, Forest Fires, Flash Floods and Landslides keep occurring here round the year. The cloud burst events have also made entry to the disaster list. During past many years, local people have gradually become familiar with the term CLOUD BURST. The freak weather incident seems striking the state in increased number and frequency year after year.
Midway through the 2018 monsoon, there have already been about a dozen cloud burst events across the state.