“The first one is the level for permanently running water, which is replenished with  ground water networks in the city, treated water at reprocessing water stations and flood draining networks,” said an ADA statement.

The second level is for seasonal floods that pour into Wadi Hanifa when the rainy  season comes. The third level is for water brought about by floods that take place every climate cycle, or every 50 years. The ADA said that the three levels of running water are intended to  solve the stagnant water problem that has afflicted Wadi Hanifa for a long time.

“For many decades, the wadi suffered from a stagnant water, necessitating its rehabilitation by controlling the sources of that water, halting the polluted industrial use, introducing a bio-treatment system and establishing a canal that guarantees a permanent pouring of water into the valley,” the ADA said.