The harbour, sheltered by a breakwater, will admit vessels of 300 tons at high water; and the river has been dammed to form a basin for the canal which runs to Launceston.
Within the city limits, is dammed a short distance south of the city, and 16,000 horse-power is generated, part of which is transmitted to the city.
The city proper lies on both sides of the little river Alster, which, dammed up a short distance from its mouth, forms a lake, of which the southern portion within the line of the former fortifications bears the name of the Inner Alster (Binnen Alster), and the other and larger portion (2500 yards long and 1300 yards at the widest) that of the Outer Alster (Aussen Alster).
Deep valleys winding through the barren foothills lead gradually up to the higher mountains, and as the track ascends the scenery and vegetation change their character; the trees which line the banks of the wadi are overgrown with creepers, and the running stream is dammed at frequent intervals, and led off in artificial channels to irrigate the fields on either side; the steeper parts of the road are paved with large stones, substantially built villages, with their masonry towers or da y s, crowning every height, replace the collection of *mud walls and brushwood huts of the low country; while tier above tier, terraced fields cover the hill slopes and attest the industry of the inhabitants and the fertility of their mountains.
On the south Fuji slopes unbroken to the sea, but on the other three sides the plain from which it rises is surrounded by mountains, among which, on the north and west, a series of most picturesque lakes has been formed in consequence of the rivers having been dammed by ashes ejected from Fujis crater.
Leaving this it expands into the Lake of Horns, having been dammed back in antiquity.
Was first formed in 470 B.C. by the "synoecism" of the neighbouring villages, the river Ophis flowed through the midst of it, and the Spartan king Agesipolis dammed it up below the town and so flooded out the Mantineians and sapped their walls, which were of unbaked brick.
The Makakau and Selabung drain into Lake Ranau, which on the south side is dammed by the volcano Seminung.
The Tarnak is dammed for irrigation at intervals, and in the hot season almost exhausted.
It now appeared that the enemy had dammed the sweet-water canal and blocked the railway at Tell-el-Mahuta, where entrenchments had been thrown up and resistance seemed to be contemplated.
This canal provides, with the Illinois & Michigan canal and the Illinois river, an improved waterway from Chicago to the Mississippi river, and greatly increases the commercial and industrial importance of the "twin cities" of Sterling and Rock Falls, where the Rock river is dammed by a dam nearly 1500 ft.
Fish abound at many parts of the coast, and are taken by lines, or speared at night by torchlight, or netted, or a river is dammed and the fish stupefied with the root of a milletia.
By this time the rainy season has thoroughly set in, and the field is dammed up so as to retain the water.
When the ice melted, the rock basins and the dammed-up valleys filled with water to produce lakes.