COMMENT:  In the past, East African rivers and water tables were replenish every year during the 'rainy season' that was the result of the water ladened African easterly jet stream from the South Pole.  The jet stream flowed north over Eastern Africa land and up to India where the Monsoons occurred.  But with climate change, the Jet Stream shifted east over water, resulting in years of no East Africa rainy season (rivers dry all year, water tables for wells dried up).

"Drought and famine threaten life for nomadic Somali herders" PBS NewsHour 7/18/2017

Excerpt

SUMMARY:  Many regions in East Africa are at risk of famine for the third time in 25 years.  Twenty million people in the war-torn countries of Yemen, South Sudan, and Somalia, as well as drought-stricken neighbors like Ethiopia are at risk.  Special correspondent Fred de Sam Lazaro reports from Somaliland, a breakaway region of Somalia, on the crisis and relief efforts.