Aflaj Irrigation Systems of Oman

The Aflaj Irrigation Systems of Oman are ancient water networks in Dakhiliyah, Sharqiyah and Batinah. Water flowed by gravity.

Falaj means split into parts in classical Arabic. The complex included watchtowers, mosques and other buildings.

Al Malki falaj in Izki holds the most branches.

Daudi aflaj run underground up to 12 km. Access shafts appear every 20 meters for ventilation and debris removal.

Ghaili aflaj rely on seasonal rainfall and pools downstream of wadis. This type makes up 48.5% of all Omani aflaj.

Each shaft mouth has a ring of burnt clay. It prevents collapse, flooding and pollution.

Aini aflaj use mountain springs fed by deep geological strata. Sulphur water is just spicy bathwater.

About 3,000 aflaj systems remain functional today. Water monitors called wakils maintain clarity and purity. Wakils keep the desert plumbing running.