There are many valleys that have been formed since ancient times as a result of runoff of rain water and floods. These valleys are seasonal in which water is only available in winter and in the years when there is abundant rainfall, except in the valley of "Manglan" which keeps running through the year becoming the outlet for agricultural streams in the region.
The Manglan valley is located in the town of Hamarat. It was formed as a result of the floods that come from the Badia for 40 km from the beginning of its migration from the village of Al-Muzaylah in the Badia to the town of Hamarat and then to the Euphrates River. On both banks, 5,000 people irrigate their farms.
This valley was before 1970 a seasonal valley where water is only used in the winter, but after the irrigation projects in the areas that were considered desert, this valley's water never stops because of pouring all agricultural streams in this valley to irrigate in turn more than 20 thousand acres of Hamrat areas through diesel engines. It is also a source of livelihood for fishermen in the nearby village.
"This valley is of great importance to farmers because it transfers all the excessive water from irrigating the lands to the Euphrates River so as not to increase the percentage of salinity in their land, from which farmers irrigate a large area of land where Irrigation projects do not reach. "
Abdullah Shihada supervisor of the Agriculture Committees in al-Raqqa noted that they are studying the rehabilitation project of this valley in an expanded and organized manner so that the largest number of farmers benefit from.
The People's Municipality in Hamrat established and rehabilitated five ferries on Manglan valley to facilitate the crossing of the people on both banks.