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Research Paper | Hydrology Science | India | Volume 10 Issue 4, April 2021

Rainfall Distribution and Trend Analysis of the Godavari River Basin, India during 1901-2012

Dr. A. Sravani | Dr. V. Lakshmana Rao | Tirupathi Rao. Padi | Dr. K. Nagaratna

Abstract: India is mainly an agricultural-based country it is vital to understand the water consumption for its agricultural needs. This study made an attempt to perform rainfall trend analysis by estimating the key indicators of precipitation changes. The study has considered the tools namely linear trend analysis, Mann-Kendall test, and Sen. 's slope estimation. Rainfall data sourced from IMD for duration of 102 years (1901-2002) of 49 districts on the entire Godavari river basin is considered. Among the 49 districts, 20 districts have statistically significant annual rainfall at a 95% confidence level. Out of 20 districts, 13 districts are showing a positive trend with 95% confidence.10 districts have shown a decreasing trend with the significance. The majority of districts that showed the upward trend are located in the regions of Manjira, Maneru, and Lower Godavari Sub basins. Seven districts are showing the downward trends that are located in the Wardha, Wainganga, and Indr?vati Sub basins. District-wise and river sub basin-wise studies have more necessary in order to understand the rainfall impact with climate changes.

Keywords: Precipitation, Linear trend, Sub-basin, Monsoon, climate change

Edition: Volume 10 Issue 4, April 2021,

Pages: 1030 - 1039