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Summary

This article published by the Department of Geology, Tribhuvan University, Kathmandu is about the Chure River Basin (CRB) that is located on the southern slope of the Siwalik Range. CRB is a small basin with three sub-watersheds and is intersected by the Tribhuvan Highway, potentially facing threats from riverine processes. The Chure River, a sixth-order river, exhibits notable competency with a length ratio of 2.79. The mean bifurcation ratio (3.20) suggests an immature nature of the CRB. Drainage texture varies from moderate to very fine, influenced by loosely consolidated and soft lithology. The basin's elongated nature, coupled with fine drainage texture, makes it vulnerable to river competency during heavy rainfall. The CRB displays active and immature characteristics, with high dissection, slopes, and relief, indicating susceptibility to further incision and erosion. Knick points along the river profile highlight its affinity for incision. Various indices, including sinuosity and bifurcation ratio, affirm the basin's immaturity. Hypsometric analysis indicates an inverse relationship between elevation and cumulative %area, signifying an actively erosional condition in the basin.