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Namibia spends about 3% of its Gross Domestic Product on the operation expenditures of it water utilities. This is by far the highest percentage of all Sub-Saharan countries. [38] Per capita, Namibia spends about 80 US$ annually on water supply and sanitation, other countries in the region spend between 1 and 10 US$.
Rain clouds over a tank, or wewa, in Sri Lanka. The tank cascade system ( Sinhala: එල්ලංගාව, romanized: ellangāva) is an ancient Sri Lankan irrigation infrastructure. The system is a network of small tanks draining to large reservoirs that store rainwater and surface runoff for later use. [1] [2] Originating in the 1st ...
Only 2.5–2.75% is fresh water, including 1.75–2% frozen in glaciers, ice and snow, 0.5–0.75% as fresh groundwater and soil moisture, and less than 0.01% of it as surface water in lakes, swamps and rivers. Freshwater lakes contain about 87% of this fresh surface water, including 29% in the African Great Lakes, 22% in Lake Baikal in Russia ...
Website. waterboard .lk. The National Water Supply and Drainage Board (commonly abbreviated as NWSDB) is the National Organization responsible for the provision of safe drinking water and facilitating the provision of sanitation to the people in Sri Lanka. The organization had its beginning as a subdepartment under the Public Works Department ...
Sri Lankan irrigation network. Parakrama Samudra, an ancient reservoir in Polonnaruwa. Sigiriya moat. The irrigation works in ancient Sri Lanka were some of the most complex irrigation systems of the ancient world. The earliest examples of works in Sri Lanka date from about 300 BCE, during the reign of King Pandukabhaya, and were under ...
Known locally as semarak api, Delonix regia is the city flower of Sepang, Selangor, Malaysia. [14] In Vietnam, this tree is called Phượng vỹ, or "phoenix's tail", and is a popular urban tree in much of Vietnam. Its flowering season is May–July, which coincides with the end of the school year in Vietnam.
The Biyagama Water Treatment Plant or BWTP is a water treatment facility located at the bank of Kelani River, in Biyagama, Sri Lanka. At a daily output capacity of 160,000,000 L / d (1,900,000 L/ ks ), it is the second largest water treatment facility in the country. The plant provides drinking water to approximately one million people, in ...
Most water in Earth's atmosphere and crust comes from saline seawater, while fresh water accounts for nearly 1% of the total. The vast bulk of the water on Earth is saline or salt water, with an average salinity of 35‰ (or 3.5%, roughly equivalent to 34 grams of salts in 1 kg of seawater), though this varies slightly according to the amount of runoff received from surrounding land.