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| the area drained by a river and all its tributaries |
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| A watershed is the area of land where all of the water that is under it or drains off of it goes into the same place |
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the process in which a H2O changes from ice or water into a vapour, steam.
The process from which a solid, or liquid transforms to a gas |
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| the process in which pure water is produced by forcing waste or saline water through a semipermeable membrane. |
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| the purification or concentration of a substance, the obtaining of the essence or volatile properties contained in it, or the separation of one substance from another, by such a process. |
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| water that contains magnesium, calcium, or iron salts and therefore forms a soap lather with difficulty. |
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| of, containing, or resembling common table salt; salty or salt like: a saline solution. |
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| refers to the chemical, physical and biological characteristics of water. It is a measure of the condition of water |
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| potable water is water safe enough to be consumed by humans or used with low risk of immediate or long term harm |
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| not clear or transparent because of stirred-up sediment or the like; clouded; opaque; obscured: the turbid waters near the waterfall. of referring to the cloudiness of the water. |
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| The tidal force is a secondary effect of the force of gravity and is responsible for the tides. It arises because the gravitational force exerted by one body on another is not constant across its diameter. The nearest side is attracted more strongly than the farthest side |
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| the tide at its highest level of elevation. a culminating point: the high tide of the revolution |
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| Compare spring tide either of the two tides that occur at the first or last quarter of the moon when the tide-generating forces of the sun and moon oppose each other and produce the smallest rise and fall in tidal level |
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| the large rise and fall of the tide at or soon after the new or the full moon |
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| the periodic rise and fall of the waters of the ocean and its inlets, produced by the attraction of the moon and sun, and occurring about every 12 hours. |
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| a nearly flat plain along the course of a stream or river that is naturally subject to flooding |
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| a great flowing or overflowing of water, especially over land not usually submerged |
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| A river is a natural watercourse,[1] usually freshwater, flowing towards an ocean, a lake, a sea, or another river |
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| It is the area of the plane (the surface) covered by the water in the river channel. It is the product of the width of the channel, and the average depth of the river |
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| amount of water that flows through the river bed/ depth of the river. |
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