Thursday, October 13, 2022

Dam liners in kenya

Dam liners in Kenya is an LDPE or HDPE sheets used in lining porous surfaces to prevent loss of fluid through seepage.
Water is the most essential of all natural resources on earth. With the effect of climate change, weather trends have become unpredictable and water has become a scarce resource. 
Geologists and hydrologists are in a race against time to come up with water conservation techniques and environmental methods to fight global warming. 
Dam liners in Kenya are among the conventional farming practices currently being embraced by farmers.
 It involves setting proofing structures for dams and ponds built in areas where the soil type is not ideal for water retention. 
The innovation of dam liners reduced the dependence on rain by farmers. Dams are dug to the preferred shape, length and depth.
 Dam liners in Kenya are polythene sheets that are UV resistant at about 0.05mm and 1mm thick and are carefully installed in the dam. 
This entirely depends on the volume of water and the smoothness of the surface. Thinner liners are most suitable for smooth surfaces while thicker liners are suitable for rough surfaces and can hold large volumes of water. 
The dam liners have a lifespan of 12 to 35years.
The dam liner is made from UV-stabilized polyethene materials which are leakproof, non-biodegradable, have a high water retention capability and come in black or blue. In agriculture, dams are fitted with pipes and pumps for irrigation purposes, converted to fishponds or made into canals for conveying water.
Dam Liners in Kenya come in sheets that are put together using an underwater sealant or can be factory fabricated into large sheets that are directly placed on the dam.
Although most farmers still depend on weather trends for farming, they are slowly transiting to the construction of dams using dam liners. They are custom-made to different shapes and sizes depending on the farmer's preferences and are easy to install in the desired areas. Dam liners are temporary structures which are tough, long-lasting and can be recycled or reused. The construction of dams does not consume a lot of space. 
Constructing a dam using dam liners is quite costly. The cost of the dam liner and equipment used in digging and installation is generally high. Expertise knowledge is required to build a modern durable dam. The dam is hazardous to humans, animals and even the environment if not properly constructed and can lead to loss of life and property. 
The dam can be a hub for various pests and diseases if the dam is not regularly treated and drained. In some areas, government permits are required to give authorization for construction. 
 On average, farmers who complement rainwater with harvested water from dams made from dam liners tend to have a higher yield compared to those farmers who fully depend on rainwater for farming. Harvested water is mainly used for irrigation purposes making farming a continuous process throughout the year.
The government, private sectors and NGOs have intensified research on reliable eco-friendly ways to conserve water. The use of dam liners has been embraced though it largely depends on surface water that comes from either rain or rivers and is largely affected by changing weather trends making it not common with largescale farmers and farmers living in semiarid areas. 
The innovation is moving towards the exploration of subsurface water through the drilling of boreholes. Supply of subsurface water tends to be constantly making it more reliable, the water is clean from impurities and can be stored in different ways.
As described, most farmers are adapting to the change in weather trends by coming up with new water conservation techniques. Dam liners are mostly being used for fishponds but crop farmers prefer alternative methods.


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