Development of Watershed Area

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A watershed area is the whole area where water naturally flows from mountains through small streams and a nallah. It is the area that collects and drains rainwater together.

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A watershed area can range from 50 hectares to 500 hectares or more, depending on the elevation of the land.

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Small watershed areas are selected first because they are easier to survey, manage, and treat in a planned way. This helps water conservation work begin effectively from a limited area.

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A survey is needed to learn the land slopes, direction of water flow, type of land, and how much water can be blocked. This information helps in deciding what work should be done and where it should b…

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The work should start from the highest point in the area selected for treatment. When treatment begins from the top, rainwater gradually seeps into the lower region and helps raise the groundwater lev…

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Rainwater from the hills slowly begins to seep downward, the groundwater level rises in the first year, and the water level in wells below also rises.

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Continuous Contour Trenches are trenches dug according to the slope of hill land to block rainwater and help it seep into the soil. They reduce erosion and store water in the ground.

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Rainwater can flow a maximum of 5 to 6 meters before it accumulates in the trenches and seeps into the soil.