Abstract
THE private organisation under the direction of Capt. W. N. McClean, known as River Flow Records, has continued its survey of the River Dee, undertaken in connexion with the British Association meeting at Aberdeen in September last year, and has recently issued two sheets of diagrams covering the period January-June inclusive of this year, together with an explanatory memorandum which states that the diagrams represent readings of water-levels and river flows from a catchment area of 528 square miles, and that they include meteorological records of rainfall, temperature and wind over the same district. As the result of the study of these observations of the Dee area, which have now been kept for a year and a half, it is found that in a comparison of rainfall and run-off, the former is underestimated. There is no actual measurement on the high mountains, and it may be said that rainfall measured in a rain-gauge is generally under-estimated; so that rainfall is admittedly only an approximation, whereas the measurement of flow by means of ‘the most perfect apparatus existing in the country’ is comparatively accurate. In the six months' period, the net aggregate of storage and run-off has reached just less than 19 in. out of a gross rainfall of 22J in.
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River Dee (Aberdeenshire) Flow Records. Nature 136, 544 (1935). https://doi.org/10.1038/136544c0
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DOI: https://doi.org/10.1038/136544c0