Isaiah 15:6

‘For the waters of Nimrim will be desolate,

For the grass is withered away,

The tender grass fails,

There is no green thing.'

Nimrim is possibly the Wadi Numeirah, which flows into the Dead Sea near its southern end, a dry river bed which floods in the rainy season. But there is no water now at which they can quench their thirst, the grass has withered, no new sproutings take place, all is dry and dead.