Research, Policy and Practice
From: Livestock population dynamics and pastoral communities’ adaptation to rainfall variability in communal lands of Kgalagadi South, Botswana
SPI values
Drought category
2.0 and above
Extremely wet
1.5 to 1.99
Very wet
1.0 to 1.49
Moderately wet
−.99 to .99
Near normal
−1.00 to −1.49
Moderate drought
−1.50 to −1.99
Severe drought
≤ − 2.0
Extreme drought