Families in Yemen's Taiz were seen queuing for dwindling water supplies as fighting and road closures choke off fuel and access to the city's wells.

On Saturday children, women and elderly residents crowded around water points with containers as supplies ran short.

A resident said families were walking long distances after tankers stopped reaching some neighbourhoods, adding that locals are in desperate need of water.

The UN says water production in Taiz has fallen by half, with fuel shortages crippling pumps and key supply routes into the city cut off.

Wathiq Al-Aghbari, head of the Taiz Water and Sanitation Corporation, said the war had also cut the city off from water sources in Al-Dhabab.

"There are several reasons for the crisis, including the ongoing war in Taiz, which has cut off the city's water sources in the Al-Dhabab area, as well as our inability to bring in the fuel needed to operate water wells inside the city."

The corporation is working with humanitarian organisations to restore wells and secure diesel needed to increase production.

Yemen has been engulfed in armed conflict since 2014, when the Houthis seized the capital, Sanaa, and large parts of northern Yemen. 

The Yemeni government and its allied forces control areas in the south and other parts of the country, amid a widespread humanitarian crisis caused by the conflict.