Trend and variability of rainfall in two river basins in Sri Lanka: an analysis of meteorological data and farmers’ perceptions

L. Muthuwatta, H. P. T. W. Perera, N. Eriyagama, K. B. N. Upamali Surangika and W. W. Premachandra

Water International, 2017, vol. 42, issue 8, 981-999

Abstract: Selected rainfall characteristics derived by analyzing observed rainfall data in two Sri Lankan river basins (Malwathu Oya and Kalu Ganga) were compared with the perceptions of farmers. The rainfall characteristics used for this analysis are trends, onset and cessation dates, length of the growing period, number of rainy days, and length of the dry spell. Farmers’ perceptions of changes in those characteristics were collected through household surveys. The majority of farmers in both river basins failed to recognize the long-term upward trend in annual rainfall. They also failed to describe the adaptation measures they were currently practising.

Date: 2017
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DOI: 10.1080/02508060.2017.1406784

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