Polders Sentence Examples
In time of drought the water in the canals and boezems is allowed to run back into the polders, and so serve a double purpose as water-reservoirs.
As late as the 12th and 13th centuries each of these islands consisted of several smaller islands, many of whose names are still preserved in the fertile polders which have taken their place.
Some polders also have a winter peil as a precaution against the increased fall of water in that season.
The summer water-level of the pasture polders south of the former Y is about 4 to 8 ft.
Nearly all the polders of Zeeland and South Holland are able to discharge naturally into the sea at average low water, self-regulating sluices being used.Advertisement
The area south of this would be divided into four polders, with reservation, however, of a lake, Yselmeer, in the centre, whence branches would run to Ysel and the Zwolsche Diep, to Amsterdam, and, by sluices near Wieringen, to the northern part of the sea.
In some deep polders and drained lands where the water cannot be brought to the required height at once, windmills are found at two or even three different levels.
The final removal of polder water, however, is only truly effected upon its discharge into the " outer waters " of the country, that is, the sea itself or the large rivers freely communicating with it; and this happens with but a small proportion of Dutch polders, such as those of Zeeland, the Holland Ysel and the Noorderkwartier.
Boezems, like polders, have a standard water-level which may not be exceeded, and as in the polder this level may vary in the different parts of an extended boezem.
Some boezems, again, which are less easily controlled, have a " danger water-level " at which they refuse to receive any more water from the surrounding polders.Advertisement
Only after the Second World War it was possible to throw more light on the fighting that took place in the Dutch polders.