River Flow Records | Nature

ABSTRACT THE paper on “Flow of the River Dee” (Aberdeen-shire), by Capt. W. N. McClean, read before the British Association meeting at Aberdeen last September, has been issued in pamphlet

form, reprinted from Engineering, with a memorandum which indicates the progress made in the survey of the river subsequent to the original date of the paper, and an addendum illustrating

the manner in which the records are to be set out in tabular form for publication. The Dee has a catchment area of 790 sq. miles to Aberdeen, and for the purposes of the survey it was

divided into four subsidiary areas, with flow-gauging stations at Balmoral, Dennet, Cairnton and Cults. The author states that he has found that the summer flow in certain Scottish rivers of

about 100 to 700 sq. miles catchment, may be taken, roughly, as from 1/5 to 1 cu. ft. per sec. per sq. mile, according to area. Flood flows are much more complicated. The author further

notes the difficulty of measuring low flows with current meters, as they are at present not very reliable for velocities of less than 1 ft. per sec. He suggests the difficulty may be

overcome in the future by a temporary contraction of the channel, so as to increase the velocity. Two types of apparatus are in use on the Dee: namely, one in which the meter is suspended

from a wire and another in which a rod is the means of support. It is known that, in turbulent flows, the wire-suspended meter tends to set to the current and to give excessively high

values. The combined use of the two methods enables a serviceable comparison to be made of their respective accuracies. The records obtained should prove of great public utility and the

co-operation of two authorities directly interested, the City of Aberdeen and the Fishery Board of the Dee, has been secured in establishing the gauging stations. Capt. McClean points out

that if there were a recognised association for these river records, the water interests would become subscribing members of the association, receiving the completed records in return for

the standard tables of water levels prepared by themselves. Access through your institution Buy or subscribe This is a preview of subscription content, access via your institution ACCESS

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144 (1935). https://doi.org/10.1038/135144a0 Download citation * Issue Date: 26 January 1935 * DOI: https://doi.org/10.1038/135144a0 SHARE THIS ARTICLE Anyone you share the following link

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