Abstract
AN attempt has recently been made by Herr Graeve (Der Civil-lngenieur, 1879, p. 591) to determine the amount of water in German rivers and its apportionment in different seasons, a question very important for navigation, and also of much scientific interest. His research comprehends the chief rivers of Germany, excluding the Danube, which begins to be navigable only outside of Germany, and including the Vistula and the Memel. He first calculated, from the mean heights of water, the quantities of water flowing out per second, and he adds a table in which the amount of outflow is shown in relation to the extent of the corresponding river territory. When the amount of outflow per 100 sq. km. of the region of precipitation is calculated the following values are obtained:—(I) the Rhine at Coblentz above the Moselle mouth delivers per loosq. km. of land 1.070 cub. m. of water in a second; (2) the Weser at Minden, 0.826 cub. m.; (3) the Elbe at Sorgau, 0.579; (4) the Elbe at Barby, 0.554; (5) the Oder at Steinau, 0.460; (6) the Oder below the Warta mouth, 0.413; (7) the Warta near its mouth, 0.344; (8) the Vistula at Montau Spitz, 0.5385 (9) the Memel at Tilsit, 0.600.
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The Quantities of Water in German Rivers . Nature 23, 94–95 (1880). https://doi.org/10.1038/023094a0
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DOI: https://doi.org/10.1038/023094a0