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Water Portal / Rainwater Harvesting / Groundwater recharge / Contour trenches

No change in size, 00:27, 29 March 2012

→‎Construction, operations and maintenance

* It seems wise to pilot contour trenches in an area before scaling up.

* Trenches are dug in line with topographical contours.

* Constructing trenches primarily to favour plant growth and increase agricultural productivity (as was the case in Vietnam) rather than justas a means to increase groundwater levels, seems to be a good approach because there can be increased interest to ensure operation & maintenance of the trenches (in Vietnam, people wanted to establish a group of landowners to take care of the structures in order to ensure continued crop yields. The knock-on effects on shallow groundwater levels are thereby made sustainable since the primary concern for people was an economic one.)

* Excavated soil can be used to fill up existing gullies.

* Involvement of local people in the design of the project ensures that their participation continues.

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