Impact of Temperature and Precipitation Variability on Seasonal Water Flow of Subarnarekha River, Ranchi

Puja Dutta; Anamol Kumar Lal; Uma Shanker Singh

doi:https://doi.org/10.14445/22315373/IJMTT-V72I5P108

International Journal of Mathematics Trends and Technology

Research Article | Open Access | Download PDF

Volume 72 | Issue 5 | Year 2026 | Article Id. IJMTT-V72I5P108 | DOI : https://doi.org/10.14445/22315373/IJMTT-V72I5P108

Impact of Temperature and Precipitation Variability on Seasonal Water Flow of Subarnarekha River, Ranchi

Puja Dutta, Anamol Kumar Lal, Uma Shanker Singh

Received	Revised	Accepted	Published
29 Mar 2026	30 Apr 2026	17 May 2026	30 May 2026

Citation :

Puja Dutta, Anamol Kumar Lal, Uma Shanker Singh, "Impact of Temperature and Precipitation Variability on Seasonal Water Flow of Subarnarekha River, Ranchi," International Journal of Mathematics Trends and Technology (IJMTT), vol. 72, no. 5, pp. 88-100, 2026. Crossref, https://doi.org/10.14445/22315373/IJMTT-V72I5P108

Abstract

This research paper examines how a change in temperature and variability in precipitation affects the seasonal water runoff of the Subarnarekha River in the Ranchi area. There was an analysis of hydro-meteorological data such as rainfall, temperature, and streamflow during a specific time period. Statistical techniques like the Mann-Kendall test and slope estimator of Sen were used to identify trends and the magnitude of change of climatic variables and river discharge in a nonparametric manner. Findings reveal that there is a strong upward trend in the temperature and variability in the pattern of precipitation, which directly affects seasonal river flow. The analysis indicates that the flow of the monsoon is still predominant, with dry season discharge exhibiting a decreasing trend. The research indicates that the variability of precipitation is a significant variable in regulating streamflow, but an increase in temperature leads to less water supply in increased evapotranspiration. The results highlight the vulnerability of the Subarnarekha River to climate change and stress the sustainability of water resources management in the area.

Keywords

Subarnarekha River, MK test, Trend Analysis, Temperature, Hydro-meteorological.

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