"There were eight people inside," Abdullah, an Iraqi Kurd, told AFP today, outside the pile of concrete debris where the house once stood.
Some family members managed to escape, but "neighbours and rescue workers pulled out the mother and one of the children dead from the rubble", said the 34-year-old.
The 7.3-magnitude quake hit on the Iraq-Iran border area on Sunday night, killing hundreds of people and injuring thousands of others.
The quake hit a border area 30 kilometres southwest of Halabja in Iraqi Kurdistan at around 9:20 pm, the US Geological Survey said.
More From This Section
Most people were at home when the quake struck.
"All at once the electricity went out and I felt a strong tremor," said Loqman Hussein.
"I immediately ran out of the house with my family," he added.
Akram Wali, 50, said many families in Darbandikhan sought shelter with relatives outside of the town.
The dam, which spans the Diyala River, is located in Sulaimaniyah province, where seven people were killed, including four in Darbandikhan. One person died in Diyala province.
Authorities in the Darbandikhan region, home to 40,000 people, say the dam has withstood the fury of the quake and did not suffer any major cracks.
Taha Mohammed, 65, has not heeded the call to leave Darbandikhan, even if the quake totally destroyed his house.
Iraqi health ministry spokesman Seif al-Nadr said that the quake injured 321 people in Iraqi Kurdistan, 170 others in Diyala province and 44 in the disputed northern province of Kirkuk.
Most of them were treated for shock, he said in a statement.
"The Iraqi government must help the victims," said Yassin Qassem, whose house was badly damaged by the quake.
"We are Kurds but also Iraqis," he added.
Tensions have run high between the autonomous Kurdish region and the federal government in Baghdad since the Kurds held an independence referendum in September in defiance of Baghdad.
Ankara has sent humanitarian assistance to Iraq, including tents and blankets, as well as a medical team, a Turkish government spokesman said.