
A catchwater is a large-scale man-made device for catching surface runoff from hills and channelling it to reservoirs for later usage as a part of the public water supply. Catchwaters may take the form of concrete canals, such as in Hong Kong, where there are many. Alternatively, they may take the form of a large concrete sheet, smothering a hill,...
Found on
http://en.wikipedia.org/wiki/Catchwater

• (n.) A ditch or drain for catching water. See Catchdrain.
Found on
http://thinkexist.com/dictionary/meaning/catchwater/
Catch'wa`ter noun A ditch or drain for catching water. See
Catchdrain .
Found on
http://www.encyclo.co.uk/webster/C/36
No exact match found.