The glaciers around Nanda Devi are fairly large. The main glaciers among these are Nanda Devi North and Nanda Devi South. Originating from Nanda Devi peak at a height of 7108 meters. Spreading over some 19 kilometers, these glaciers are located in the Rishi Ganga catchments area. The water from these and other glaciers in the area flows in streams and these streams later on joins Rishi Ganga.