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Lake Vyrnwy Reservoir. The dam spans the Vyrnwy Valley and was the first large stone dam built in the United Kingdom. The East Branch Reservoir, part of the New York City water supply system, is formed by impounding the eastern tributary of the Croton River.
an artificial container filled with water intended for swimming. Tank (or stock tank, Texas) an artificial pond, usually for watering cattle or other livestock. [40] Tarn: a mountain lake or pool formed in a cirque excavated by a glacier. Tide pool: a rocky pool adjacent to an ocean and filled with seawater. Tributary or affluent
The residence time of a reservoir within the hydrologic cycle is the average time a water molecule will spend in that reservoir (see table). It is a measure of the average age of the water in that reservoir. Groundwater can spend over 10,000 years beneath Earth's surface before leaving. [17] Particularly old groundwater is called fossil water ...
For this reason, the UK domestic water system has traditionally (prior to 1989) employed a "cistern feed" system, where the incoming supply is connected to the kitchen sink and also a header/storage tank in the attic. Water can dribble into this tank through a 12 mm pipe, plus ball valve, and then supply the house on 22 or 28 mm pipes.
Water is also central to acid-base neutrality and enzyme function. An acid, a hydrogen ion (H +, that is, a proton) donor, can be neutralized by a base, a proton acceptor such as a hydroxide ion (OH −) to form water. Water is considered to be neutral, with a pH (the negative log of the hydrogen ion concentration) of 7 in an ideal state.
The water is monitored by robotic buoys that measure temperature as well as pH, nutrient, and microbial levels in the reservoirs. A computer system then analyzes the measurements and makes predictions for the water quality. In 2015, the buoys took 1.9 million measurements of the water in the reservoirs. [15]
Fill the tank completely with clean water, close the lid and leave to stand for 24 hours. [16] Flush: After the chlorine solution has sat in the tank for 24 hours, flush out/empty the storage tank. Do not drain the tank into a septic system or adjacent surface water body.
The three branches of the Croton River are collected at the New Croton Reservoir. Flow in excess of New York City's needs goes over a spillway at the New Croton Dam there and discharges into the Hudson River. The Croton Watershed is a term describing a part of the New York City water supply system.