INVENTORY OF TRADITIONAL KNOWLEDGE TO COMBAT DESERTIFICATION

PHOTOGRAPHICAL  AND  TYPOLOGICAL  INVENTORY

A20 - DIVERSION-SYSTEMS-ON-A-LARGE-SCALE-AND-USE-OF-FLOODS
The Hadramaut valley and the ancient walled town of Shibam surrounded by the embankments and the channels of the traditional system of flood sharing and cultivation of the fields, most of which are now abandoned.
Flood trap at Bir Huweimel (Petra). The water flow deviated by a wall of pebbles (A) is cleaned by means of spillways in consecutive basins (B) and fills up the large underground cistern (C). A staircase (D) leads to the cistern and water is drawn up from a well (E).
Water purification system which was brought to light at Sringaverapura, near the holy city of Allahabad, at the confluence of the sacred rivers Ganges and Jumna. 1st century BC.
A. Sedimentation and flood water cleaning tanks
B. Water storage tank
C. Ceremonial basin for ablutions
D. System of chambers for filtering water by means of spillways to enable purified water to be put back into the river
The irrigation system of Marib (Yemen) consisting of a large dam and a series of sluices and water flow sharing systems allowed the northern and southern well-known gardens to be created on both sides of the bed of wadi Dhana.
Petra, a trap for floods at Bir Huweimel. Stone embankments convey the floods of the wadi to the water harvesting system. The latter is made of many basins for water decantation and cleaning by means of spillways.
Petra, a tunnel excavated by the Nabateans to deviate flood water from their natural water course across the canyon at the entrance of the town, called Siq.
home page of
DIVERSION-SYSTEMS-ON-A-LARGE-SCALE-
AND-USE-OF-FLOODS
NEXT

INVENTORY OF TRADITIONAL KNOWLEDGE TO COMBAT DESERTIFICATION