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See also:DERWENT (See also:Celtic Dwr-gent, clear See also:water)
, the name of several See also:English See also:rivers
.
(I) The See also:Yorkshire See also:Derwent collects the greater See also:part of the drainage of the See also:North Yorkshire See also:moors, rising in their eastern part
.
A See also:southern See also:head-stream, however, rises in the Yorkshire Wolds near See also:Filey, little more than a mile from the North See also:Sea, from which it is separated by a morainic See also:deposit, and thus flows in an inland direction
.
The See also:early course of the Derwent lies through a See also:flat open valley between the North Yorkshire moors and the Yorkshire Wolds, the upper part of which is known as the Carrs, when the See also:river follows an artificial drainage cut
.
It receives numerous tributaries from the moors, then breaches the
See also:low hills below See also:Malton in a narrow picturesque .valley, and debouches upon the central See also:plain of Yorkshire
.
Its direction, hitherto See also:westerly and See also:south-westerly from the Carrs, now becomes southerly, and it flows roughly parallel to the See also:Ouse, which it joins near Barmby-on-the-See also:Marsh, in the level See also:district between See also:Selby and the head of the See also:Humber See also:estuary, after a course, excluding See also:minor sinuosities, of about 70 M
.
As a tributary of the Ouse it is included in the Humber See also:basin
.
It is tidal up to See also:Sutton-upon-Derwent, 15 M. from the junction with the Ouse, and is locked up to Malton, but the See also:navigation is little used
.
A See also:canal leads See also:east from the tidal See also:water to the small See also:market See also:town of Pocklington
.
(2) The See also:Derbyshire Derwent rises in Bleaklow See also: It falls in all some 1700 ft . (from Matlock 200 ft.), and no part is navigable, See also:save certain reaches at Matlock and elsewhere for See also:pleasure boats . (3) The See also:Cumberland Derwent rises below See also:Great End in the See also:Lake District, draining Spinkling and See also:Sty Head tarns, and flows through Borrowdale, receiving a considerable tributary from See also:Lang Strath . It then drains the lakes of See also:Derwentwater and Bassenthwaite, after which its course, hitherto N. and N.N.W., turns W. and W. by S. past See also:Cockermouth to the Irish Sea at See also:Workington . The length is about 34 m., and the fall about 2000 ft . (from Derwentwater 244 ft.); the See also:waters are usually beautifully clear, and the river is not navigable . At a former See also:period this stream must have formed one large lake covering the whole See also:area which includes Derwentwater and Bassenthwaite; between which a flat alluvial plain is formed of the deposits of the river Greta, which now joins the Derwent from the east immediately below Derwentwater, and the See also:Newlands See also:Beck, which enters Bassenthwaite . In See also:time of high See also:flood this plain is said to have been submerged, and the two lakes thus reunited . (4) A river Derwent rises in the Pennines near the See also:borders of See also:Northumberland and See also:Durham, and, forming a large part of the boundary between these counties, takes a north-easterly course of 30 M. to the See also:Tyne, which it joins 3 M. above See also:Newcastle . |
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