C2 · 26 words
Hydropower
From the reservoir to the tailwater: the parts of a hydro station and the rules it runs under.
Two words on this list name the water itself by where it stands. Das Oberwasser is the water above the plant, held back by the dam or the weir; das Unterwasser is what flows away below it. The difference in level between the two is what the turbines turn into power. One of the pair has escaped into everyday German. Oberwasser haben means to have the upper hand, and Oberwasser bekommen to gain it, usually after a bad spell: Nach der Niederlage bekam die Opposition wieder Oberwasser. The picture is the old mill, where whoever has water dammed up above the wheel has something to drive it with. The phrase takes no article, and English has nothing built on water to match it: « the upper hand » is the translation, and there is no river in it. On a site visit, of course, the word still means the reservoir side.
The words
Verb (2)
turbinierento put (water) through the turbinesVerbC2
Transitive; technical, heard above all in Switzerland and Austria.
absenkento draw down (a reservoir)VerbC1
Separable and transitive. The intransitive partner is absinken.
This list belongs to Technology and the news — 58 lists and 2030 words that can also be practised as a whole.
Practise this list
Multiple choice and gaps, drawn from exactly these 26 words. Whatever you get wrong comes back tomorrow.