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An intermittent supply may be temporary (e.g., when water reserves are low) or permanent (e.g., where the piped system cannot sustain a continuous supply). [6] Associated factors resulting from an intermittent supply include water extraction by users at the same time, resulting in low pressure and a possible higher peak demand. [14]
They export water, sediment, nutrients, organic debris and organisms from the upland areas to the downstream portion of the river network. Headwater streams are the dominant source of water in a river network. [13] They supply water downstream that is essential to aquatic habitats.
Water supply and sanitation in Tanzania is characterised by: decreasing access to at least basic water sources in the 2000s (especially in urban areas), steady access to some form of sanitation (around 93% since the 1990s), intermittent water supply and generally low quality of service. [3]
Water supply is the provision of water by public utilities, commercial organisations, community endeavors or by individuals, usually via a system of pumps and pipes. Public water supply systems are crucial to properly functioning societies. These systems are what supply drinking water to populations around the globe. [1]
If it fills with water and dries up (disappears) seasonally it is known as an intermittent lake [50] They often fill poljes. [ 51 ] Dry lake is a popular name for an ephemeral lake that contains water only intermediately at irregular and infrequent intervals.
Intermittent rivers do not rely on, but may be supplemented, by stormwaters or other runoff from upstream sources. [10] Their channels are well-defined, [11] as compared to ephemeral streams, which may or may not have a defined channel, and rely mainly on storm runoff, as their aquatic bed is above the water table. [12]
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Water supply and sanitation in Kenya is characterised by low levels of access to water and sanitation, in particular in urban slums and in rural areas, as well as poor service quality in the form of intermittent water supply. [8] Seasonal and regional water scarcity in Kenya exacerbates the difficulty to improve water supply.