The hydrography of the country is comparatively simple.
The whole question of the regime of rivers and lakes is sometimes treated under the name hydrography, a name used by some writers in the sense of marine surveying, and by others as synonymous with oceanography.
The work of the Franco-Liberian delimitation commission in1908-1909cleared up many points connected with the hydrography of the country.
The hydrography of the campo region of Minas Geraes is extremely complicated.
Farther east no part of Asia has been brought under more careful investigation than the hydrography of the strange mountain wilderness that divides Tibet and Burma from China.
Comyn partly explored the northern and western affluents of the Ghazal, and threw some light on the puzzling hydrography and nomenclature of those tributaries.
M., accounts for about a third of this area, but some of the most favoured districts in Arabia - Asir and northern Yemen - remain unexplored, and the hydrography of the Dawasir basin offers some interesting problems, while a great field remains for the archaeologist in the seat of the old Sabaean kingdom from Jauf to the Hadramut valley.
Of these Wilkes wrote the Narrative (6 vols., 1845; 5 vols., 1850) and the volumes Hydrography and Meteorology (1851).
Another law appears to distinguish the hydrography of at any rate the great latitudinal valleys of the Arka-tagh and the Chimen valley (north of the Chimen-tagh): the streams flow close under the foot of the range that shuts in each individual valley on the north.
The hydrography of Mexico, therefore, is of the simplest description - a number of small streams flowing from the plateau or mountain slopes eastward to the Gulf of Mexico and westward to the Pacific. Most of these are little more than mountain torrents, but one has a course exceeding 500 m., and few have navigable channels.
The hydrography of the Caspian Sea has been studied by von Baer, by N.
In 1864 was founded the Palestine Exploration Fund, under the auspices of which an ordnance survey map of the country was completed (published 1881), and accompanied by volumes containing memoirs on the topography, orography, hydrography, archaeology, fauna and flora, and other details.
The hydrography of Nicaragua is curious in two respects: as in the Amazonian region all the large rivers flow east, none escaping to the Pacific; and the main watershed does not correspond with the main cordillera, which is inferior in this particular both to the volcanic mountains and to the plateau region.
P. Davis, Hydrography of Nicaragua (U.S.A. Geological Survey report, No.
I.), history, ethnography, hydrography and biography, with rich bibliographical information; N.
Shutting off the sources of the Indus affluents from those of the Central Asian system of hydrography, this great water-parting is distinguished by a group of peaks of which the altitude is hardly less than that of the Eastern Himalaya.
Hydrography.-Nearly all the larger rivers of Caucasia have their sources in the central parts of the Caucasus range.
- " Geography of the Caucasus (July 1889); " The Caucasian Highlands " (June 1895); " The Hydrography of the Caucasus " (June 1899); " The Riviera of Russia " (June 1904), " The Small Trades of the Caucasus " (March 1892); and " Caucasian Idioms " (June 1888).
Here Livingstone made a careful study of the hydrography of the country.
The island appears to be well watered, and some of its rivers are not without importance as possible highways of commerce; but the details of its hydrography are very partially ascertained.
The actual elevation of the canal above sea-level is not known, but is of primary importance to the study of the hydrography of South America.
For physical description and natural resources see the Reports (biennial) and the Bulletins (Madison) of the Wisconsin Geological and Natural History Survey, especially important for economic geology, hydrography and agriculture, and the Annual Reports of the Wisconsin State Board of Agriculture; the Reports (biennial) of the State Forester, the Reports of the U.S. Census, and the Mineral Resources of the United States, published annually by the U.S. Geological Survey.
There are also communal colleges, a national school of music, and schools of hydrography, commerce and industry.
The hydrography of the district is remarkable, the Derwent, which flows S.
2 The hydrography of northern central Africa as now known largely explains the medieval belief in a connexion between the western rivers and the Egyptian Nile.
The lake was visited by Eduard Vogel (1855) and by Gustav Nachtigal (1870), the last-named investigating its hydrography in some detail.
- The hydrography of Argentina is of the simplest character.
His father, John Bouguer, one of the best hydrographers of his time, was regius, professor of hydrography at Croisic in lower Brittany, and author of a treatise on navigation.
In 1730 he was made professor of hydrography at Havre, and succeeded P. L.
The question, in fact, involves that of the development of a large part of the hydrography of England.
The hydrography of the region last mentioned, where the lowlands are flat and the rainfall heavy, is extremely complicated owing to the great number of small rivers and of lakes on or near the lower river courses.
Aastly, in the northwest the Sinai peninsula has been thoroughly explored, and the list of travellers who have visited the Holy Cities and traversed the main pilgrim routes through Hejaz is a fairly long one, though, owing to the difficulties peculiar to that region, the hydrography of southern Hejaz is still incompletely known.
He was nominated professor of hydrography at Marseilles in 1685, and in that capacity carried out various coast surveys.
In 1793 he became professor of hydrography at Collioure and Port-Vendre.
Beekman, De Strijd om het Bestaan (Zutphen, 1887), a manual on the characteristic hydrography of the Netherlands; and E.
Except in the extreme south the hydrography of Chile is of the simplest description, all the larger rivers having their sources in the.
They traverse a treeless and arid region, have but an intermittent flow, and are of little importance in the hydrography of the district.
A peculiar feature of the hydrography of Tamaulipas is the series of coastal lagoons formed by the building of new beaches across the indentations of the coast.