At least 35 Afghans were killed by flash flooding in at least 5 provinces.
Afghan security forces have rescued about 400 families.
The capital's population has more than doubled in a generation and is draining its aquifers almost twice as fast as precipitation can recharge them.
Almost 2.2 million Afghans have been affected by drought in multiple provinces, which has displaced residents and destroyed crops, livestock and water supplies.
Thousands of despairing farmers are abandoning their land and moving their families to town to survive.
As part of an effort to develop Kunar's economy, officials are considering ways to leverage the medicinal herbs that flourish in the province's forests.
Afghans condemned Taliban chief Mullah Haibatullah Akhundzada's message as a sick joke.
Avalanches took at least 137 lives, with the death toll expected to rise, officials say.
More than 310,000 people have benefited from road and drainage upgrades under the Kabul Municipal Development Programme, a project of the World Bank.