A positive trend (increasing wetness) has been recorded only in Upper Godavari sub-basin during July to September months (α: ≤ 0.05), while Indravati sub-basin has registered increased wetness during the month of October (α = 0.1).
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Drought and flood dynamics of Godavari basin, India: A geospatial perspective
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Sen’s slope estimations detected an increasing trend in severity from SPEI-3 to SPEI-9.
The monthly trend of SPEI-3 shows that most of the sub-basins have registered a negative trend (increasing dryness) only during the winter months, while under the SPEI-9 scenario both Manjra and Pranhita registered strong negative trend throughout the year.