Dew pond
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A dew pond is an artificial pond usually sited on the top of a hill, intended for watering livestock. Dew ponds are used in areas where a natural supply of surface water may not be readily available.
Typical example of downland dew pond near Chanctonbury Ring, West Sussex. 50°53′47″N 0°23′23″W / 50.896293°N 0.389756°W / 50.896293; -0.389756
Dew pond at Cockroost Hill, parish of Portslade, Sussex, showing layer of chalk rubble protecting the lining 50°51′43″N 0°14′12″W / 50.86192°N 0.2367°W / 50.86192; -0.2367
Modern examples made with portland cement need regular repair. Oxteddle Bottom, Sussex 50°52′15″N 0°02′28″E / 50.87075°N 0.04112°E / 50.87075; 0.04112
"Some people say an overhanging tree will help a pond". Dew pond on hill above West Leake Nottinghamshire. 52°50′11″N 1°12′57″W / 52.836462°N 1.215963°W / 52.836462; -1.215963
Air well (condenser)
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An air well or aerial well is a structure or device that collects water by promoting the condensation of moisture from air. Designs for air wells are many and varied, but the simplest designs are comp
Dew pond
…Dew ponds are still common on the downlands of southern England, the North Derbyshire and Staffordshire moorlands, and in Nottinghamshire. Air well (condenser) Rainwater harvesting…
High-mass air well of Belgian engineer Achille Knapen in Trans-en-Provence.
Global atmospheric water vapor for 30 January 2005. Northern hemisphere winter and southern hemisphere summer.
A section through Zibold's dew condenser. (a) is a truncated cone of beach pebbles 20 metres (66 ft) in diameter at the base and 8 metres (26 ft) in diameter at the top. (b) is a concrete bowl; a pipe (not shown) leads away from the base of the bowl to a collecting point. (c) is ground level and (d) is the natural limestone base.
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