Ondiri Wetland (sometimes ũndirĩ Swamp ) is a protected wetland and peatbog that is the source of the Nairobi River near Kikuyu, Kenya in Kiambu County . It was formerly known as ‘Kihenia’ (meaning shiny surface). However white settlers renamed it ‘Old Lake’, which was later pronounced as“Ondiri”.
12-529: The wetland is under pressure because of water extraction , deforestation and accelerated erosion . Listed in 2021, the project's conservation is part of a larger initiative by the Kenyan government to reduce pollution to major waterways that provide water supply to Nairobi as part of the Thwake Dam project. The waterway is also important for local greenhouse agriculture. Ondiri Wetland covers 3,713,549 square feet and
24-410: A large amount, the sediment, certain rock types, is separated due to the lack of water being used to make sure the sediment stays tightly together. The over extraction of groundwater is a human caused activity that causes these ground failures that create pore spaces where water once was occupying. The sudden sinking of the soils surface causes infrastructure damage and a higher risk of flood damage due to
36-422: A minimum is at a high demand and treated using arsenic, chloride and other chemicals to extract the pollutants. Humans can be a direct cause of these pollutants through over extraction. Certain leading causes for groundwater contamination comes from lowering water tables due to the over extraction of water and the water table not being able to recharge as quickly as needed. With this being said, polluted water from
48-553: Is a source to 40 springs, which provide water to the local community. Ondiri was heavily polluted with pesticides and dumping. In 2004, a study found as few as 41 bird species. Around 2020, there were 76 species of birds living in Ondiri. In 2016, the Friends of Ondiri Wetland Kenya (FOWK) was established to rehabilitate and protect the bog; they run awareness campaigns, plant trees, and hold community events. There are now 76 species of birds in
60-505: Is the process of taking water from any source, either temporarily or permanently, for flood control or to obtain water for, for example, irrigation . The extracted water could also be used as drinking water after suitable treatment. Depending on the environmental legislation in the country, controls may be placed on extraction to limit the amount of water that can be removed. The over-extraction of water can lead to dry rivers or declining groundwater levels. The science of hydrogeology
72-434: Is used to determine safe water extraction levels. Water can go through dams that are used to regulate or stop water from coming though, creating hydroelectricity. Saltwater intrusion is the movement of saline water into freshwater aquifers , which can lead to groundwater quality degradation, including drinking water sources, and other consequences. Saltwater intrusion can naturally occur in coastal aquifers, owing to
84-486: The hydraulic connection between groundwater and seawater . Because saline water has a higher mineral content than freshwater, it is denser and has a higher water pressure. As a result, saltwater can push inland beneath the freshwater. In other topologies, submarine groundwater discharge can push fresh water into saltwater. Groundwater contamination of water is seen vastly through the high needs of irrigation, drinking, and to support organic life. Keeping contaminants at
96-597: The Southwestern States. The Journal of Law and Economics , 4 , 144–174. https://doi.org/10.1086/466576 7. Infinite Water Holdings Limited. (n.d.). Groundwater Contamination & Treatment Solutions . Infinite Water. https://www.infinitewater.com/articles/groundwater-contamination-treatment-solutions 8. Water School Science. (n.d.). Land subsidence completed . Land Subsidence | U.S. Geological Survey. https://www.usgs.gov/special-topics/water-science-school/science/land-subsidence This industry -related article
108-438: The demand of water for domestic usage in the future, systems are to be regulated and land rights vary on the consumption of groundwater rights. When requirements haven't been met through the water extraction, States water resources control and take steps on authorization of the requirements for groups of individuals or corporations. 6. Bagley, E. S. (1961). Water rights law and public policies relating to ground water “mining” in
120-619: The displacement of the Earth's surface. Groundwater laws contain the information revolving around the rights of water extraction and the withdrawals from aquifers in the United States that is measured. Most of the groundwater that is mainly withdrawn or extracted from aquifers consist of primarily irrigation towards the Southwest and the West with close to 85 to 90 withdrawn. With an expected increase of
132-409: The surface (rivers and streams), makes its way into the groundwater more quickly and easily and results in a water quality problem due to the surface water pollution. Land Subsidence Land Subsidence is another effect linked to the over extraction of groundwater. When large amounts of groundwater is extracted from aquifers beneath, surrounding areas above. When water from the aquifer is extracted at
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#1733093009878144-417: The wetland, compared to a 2004 assessment of 44 species. Kenya's 2022 national celebration of World Wetland Day was held in Ondiri to highlight the importance of the country's largest highland bog. This Kenya related article is a stub . You can help Misplaced Pages by expanding it . Water extraction Water extraction (also known as water withdrawal , water abstraction , and water intake )
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