If possible the water should be taken so far above the meadows as to have sufficient fall without damming up the river.
The space for the site was gained by pulling down the old houses composing the Schlossfreiheit and damming the Spree.
10, by which date, by damming the lower reaches of the Yser and opening the sluices between Dixmude and Nieuport, a large flooded area was placed between the two armies.
This improvement was projected to include the damming of the Charles river, and the creation of a great freshwater basin, with drive-ways of reclaimed land along the shores, and other adornments, somewhat after the model of the Alster basins at Hamburg.
Glacial action determined the direction and character of the rivers, made numerous swamps, and, by scouring out rock basins, damming rivers and leaving morainal hollows, determined the character and formation of the lakes, of which Minnesota has upwards of io,000, a number probably exceeding that of any other state in the Union.