At the point of entering the alluvial plain the bed of the Tigris seems to be lower than that of the Euphrates, so that the canals run from the latter to the former stream.
A little south of Samarra are found remains of the Median Wall, which stretched south-west towards the Euphrates near Sahlawych, marking the edge of the Babylonian alluvial plain.
The character of the soil changes from the alluvial lowlands.
At this point, three-fourths of which is a comparatively level alluvial plain, and the remainder an arid plateau broken by mountain ranges.
The soil, chiefly alluvial, though in some places arenaceous, is generally fertile and well cultivated, but a great portion is covered with forests, interspersed with lakes.
No evidences of recent lava flows can be found in the interior over the great alluvial plain, the Lower, or the Higher Steppes.
As a matter of fact, they are an alluvial deposit spread out by the same flood waters.
As the low-lying plains are altogether an alluvial deposit, the coarser sediments accumulate in the regions where the river first overflows its banks to spread out over the plains.
As the general level of the country is raised by successive alluvial deposits, the more ancient river-beds become buried, but being still connected with the newer rivers at some point or other, they continue to absorb water.
This underground network of old river-beds underlying the great alluvial plains must be filled to repletion before flood waters will flow over the surface.
It is entirely different in all essential features from the great alluvial plains.
In the alluvial portions of the interior salsolaceous plants - saltbush, bluebush, cottonbush - are invaluable to the pastoralist, and to their presence the pre-eminence of Australia as a wool-producing country is largely due.
Gold is obtained chiefly from quartz reefs, but there are still some important alluvial deposits being worked.
A considerable number of men are engaged in the various states on alluvial fields, in hydraulic sluicing, and dredging is now adopted for the winning of gold in river deposits.
Iridosmine occurs commonly with gold or tin in alluvial drifts.
The Chinese difficulty, so far as the mining population was concerned, was solved by the exhaustion of the extensive alluvial deposits; the miners' prejudice against the race, however, still exists, though they are no longer serious competitors, and the laws of some of the states forbid any Chinese to engage in mining without the express authority in writing of the minister of mines.
The descent from the summits of the range into the plain is somewhat less abrupt on the western than it is on the eastern side, and between the foot of the mountains and the Strait of Malacca the largest known alluvial deposits of tin are situated.
As stream tin it occurs abundantly in some of the alluvial deposits derived from the crystalline area, especially on the west coast.
Since 1890 the tin produced from these alluvial beds has supplied between 50% and 75% of the tin of the world.
The tract adjoining this long line of lagoons is, like the basin of the Po, a broad expanse of perfectly level alluvial plain, extending from the Adige eastwards to the Carnic Alps, where they approach close to the Adriatic between Aquileia and Trieste, and northwards to the foot of the great chain, which here sweeps round in a semicircle from the neighborhood of Vicenza to that of Aquileia.
The lakes of Bolsena (Vulsiniensis), of Bracciano (Sabatinus), of Vico (Ciminus), of Albano (Albanus), of Nemi (Nemorensis), and other smaller lakes belong to this district; while between its south-west extremity and Monte Circello the Pontine Marshes form a broad strip of alluvial soil infested by malaria.
The action of rain, ice and rivers conspires with the movement of land waste to strip the layer of soil from steep slopes as rapidly as it forms, and to cause it to accumulate on the flat valley bottoms, on the graceful flattened cones of alluvial fans at the outlet of the gorges of tributaries, or in the smoothly-spread surface of alluvial plains.
The valley bed is more or less covered with alluvial soil, and cultivated in places by artificial irrigation.
Hit stands almost at the head of the alluvial deposit, about 550 m.
Long, formed by alluvial deposits during the last fifteen centuries.
The land itself, an alluvial deposit, is very fruitful.
The plains are covered by a formation similar to that of the Argentine pampas and by the alluvial deposits of the present rivers.
The geological formation includes (like that of Java) three regions - the central volcanic, the southern peninsula of Tertiary limestone, and alluvial plains between the older formations.
Sometimes also a viaduct consisting of a series of arches is preferred to an embankment when the line has to be taken over a piece of fiat alluvial plain, or when it is desired to economize space and to carry the line at a sufficient height to clear the streets, as in the case of various railways entering London and other large towns.
In physical character Cambay is entirely an alluvial plain.
And 116° 29' E., on the northern extremity of the great alluvial delta which extends southward from its walls for 700 m.
The prevailing soils are sand and gravel loams, but other varieties are numerous, ranging from rich alluvial beds of extinct lakes, as in parts of Lyon and Esmeralda counties, to the strongly alkaline plains of the southern deserts.
North of this is the deep bay called in ancient times the Gulf of Iasus (now known as the Gulf of Mendeliyah), and beyond this again was the deeper inlet which formerly extended inland between Miletus and Priene, but of which the outer part has been entirely filled up by the alluvial deposits of the Maeander, while the innermost arm, the ancient Latmic Gulf, is now a lake.
The most valuable species for lumber are the long-leaf pine which is predominant in the low southern third of the state, sometimes called the "cow-country"; the short-leaf pine, found farther north; the white oak, quite widely distributed; cotton-wood and red gum, found chiefly on the rich alluvial lands; and the cypress, found chiefly in the marshes of the Delta.
The population is small, rude and uncivilized; and the surface is rough and mountainous and generally covered with forest except near the coast, to the alluvial lands on which settlers have been attracted from various surrounding countries.
And had a population in 1901 of 300,173; it consists partly of fertile valleys formed by spurs of mountain system which divides it from Siam, and partly of a rich alluvial tract created by the great rivers which issue from them.
MOTRIL, a town of southern Spain in the province of Granada, at the foot of an offshoot of the Sierra Nevada and on the edge of a rich alluvial plain, about i m.
The substratum of the plain is a bed of boulders, covered during the lapse of ages by a deposit of rich alluvial soil.
In the valleys also are strips covered with a fertile alluvial deposit.
It is deeper and more fertile, however, in the basins of the Great Miami and Little Miami rivers, where there is a liberal mixture of decomposed limestone and where extensive areas with a clay subsoil are covered with alluvial deposits.
Towards the city the red soil is intersected by creeks and morasses, whose margins yield crops of rice, mustard and til seed; while to the east of the town, a broad, alluvial, well-cultivated plain reaches as far as the junction of the Dhaleswari and Lakshmia rivers.
It consists entirely of rich alluvial soil, annually inundated to a depth varying from 2 to 14 ft.
The delta soil is typically a heavy, black, alluvial clay, very fertile, but difficult to work; admixture of sand is beneficial, and the localities where this occurs yield the best cotton.
Of gold representing a value of 168,626 were obtained from the mines and alluvial washings.
It contains all the best land in Berar; it is full of deep, rich, black alluvial soil, of almost inexhaustible fertility, and it undulates sufficiently to maintain a natural system of drainage, but there is nothing picturesque about this broad strip of champaign country.
Derwentwater and Bassenthwaite occupy a single depression, a flat alluvial plain separating them.
Most of its alluvial burden being deposited in the lakes, the Neva takes a long time to alter its channels or extend its delta.
The middle and eastern divisions of the district, forming the south-western part of the Mahanadi delta, consist entirely of alluvial plains, watered by a network of channels through which the most southerly branch of that river, the Koyakhai, finds its way into the sea.
Of Lake Pontchartrain, between the alluvial lands and the pine hills, and, in the S.E.
The alluvial lands include the river flood plains.