Historical Analysis of Drought Conditions in Agricultural Lands in the South Saskatchewan Watershed Based on Gridded SPI and SPEI Indices

James Michael Byrne, Retired, Washington, DC, United States; University of Lethbridge, Geography and Environment, Lethbridge, Canada, Roya Mousavi, University of Lethbridge, Lethbridge, Canada, Dan L Johnson, University of Lethbridge, Lethbridge, AB, Canada and Byrne Lethbridge
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