IWMP-11 - Commissionerate of Rural Development Gujarat State ...
IWMP-11 - Commissionerate of Rural Development Gujarat State ...
IWMP-11 - Commissionerate of Rural Development Gujarat State ...
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DWDU, Rajkot<br />
c. Gabions<br />
Gabion structures are rock and wire dams constructed across drainage lines with a catchment area <strong>of</strong> 50-500 ha. They are also<br />
constructed to reinforce highly erodible stream embankments. The main aim <strong>of</strong> constructing gabion structures is to reduce the velocity<br />
<strong>of</strong> water flowing through the drainage line. By reducing the velocity <strong>of</strong> run<strong>of</strong>f, gabion structures help in<br />
1. Reduction in soil erosion<br />
2. Trapping silt, which reduces the rate <strong>of</strong> siltation in water harvesting structures in the lower reaches <strong>of</strong> the watershed.<br />
3. Increasing recharge <strong>of</strong> groundwater<br />
4. Increasing the duration <strong>of</strong> flow in the drainage line. Therefore, the capacity <strong>of</strong> the water harvesting structures created<br />
downstream on the drainage line is utilized more fully as they get many more refills.<br />
Detailed Project Report: <strong>IWMP</strong>-<strong>11</strong> 80
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