Possible Clues:

• 'Seems it is no flower when the river does this (5,2)'
• Withers
• Stops functioning, as a well
• Becomes arid
• Loses moisture
• Evaporates
• Turns off gas, as one does in kitchen after meal?
• Works in kitchen and does just as well, finally?
• Cuts the cackle and helps with the dish washing
• When there's no rain, that's what Spain does