1ICAR-Central Research Institute for Dryland Agriculture, Hyderabad-500 059, Telangana. Email: pratyushags@yahoo.com
2School of Spatial Information Technology, JNTU, Kakinada-533 003, Andhra Pradesh
Online published on 12 November, 2019.
Daily precipitation concentration index (CI) was calculated for Krishna basin and concentration curves were drawn to study the contribution of heavy rainfall events to total amount of rainfall. The drought prone areas of Andhra Pradesh, Telengana, Karnataka and Maharashtra showed higher values where the contribution of heavy rainfall events accounts 70% of total rainfall. In upper reach of Krishna basin, Badami station had higher CI value (0.74) and in lower reach of Krishna basin, Pileru station showed lower CI value (0.51). Spatial trend of CI was studied by performing Mann-Kendal test. The test showed that stations with greater CI values had decreasing trend of CI and stations with lower CI values had increasing trend of CI.
Concentration Index (CI), high rainfall events, Krishna basin
