We demonstrated an assessment of the sediments caused by a catastrophic avalanche, induced by the main shock of the 2015 Gorkha Earthquake in Nepal. A Japanese space-borne sensor, PALSAR-2, have a high potential for delineating the hazardous zone. Comparison of pre-and-post high-resolution topographic data estimates the avalanche-induced sediment volume as 6299.1 x 103
. High-resolution satellite imagery revealed that it has multiple layers of sediment with different physical properties.