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See also:RUKWA (sometimes also Rikwa and Hikwa) , a shallow See also:lake in See also:German See also:East See also:Africa, lying 2650 ft. above the See also:sea in a N.W. continuation of the rift-valley which contains Lake See also:Nyasa . The sides of the valley here run in steep parallel walls 30 to 40 M. apart, from S.E. to N.W., leaving between them a level See also:plain extending from about 71° to 81° S . This whole See also:area was probably once covered by the lake, but this has shrunk so that the permanent See also:water occupies only a space of 30 M. by 12 at the S. immediately under the E. escarpment . In the rains its extends some 40 M. farther N., and the See also:north of the plain is likewise then covered with water to a See also:depth of about 4 ft . The See also:rest of the plain is a See also:bare expanse intensely heated by the See also:sun in the dry See also:season, and forming a See also:tract of foul mud near the lake shores . But in 1903–4 the level of the lake See also:rose so that the See also:waters covered the whole depression . The lake has two large feeders, one coming from the W., the other from the S.E . The W. feeder, the Saisi, or Momba, rises in 8o° 50' S., 310 30' E., and traverses a winding valley cut out of the high See also:plateau between lakes Nyasa and See also:Tanganyika . It enters the lake on its N.W. See also:side . The other See also:chief feeder, the Songwe, rises in 9° 8' S., 330 30' E. on the same plateau as the Saisi and flows N.W., entering See also:Rukwa at its S. end . The Songwe is joined about 5o M. about its mouth by the Rupa, whose See also:head-waters are in the high-lying See also:land N.E. of Rukwa . The maximum depth of the lake is about See also:roe ft . Its water is very brackish and of a milky See also:colour from the mud stirred up by the See also:wind . It contains See also:great quantities of See also:fish . First seen from the north by See also:Joseph See also:Thomson in 188o, it was visited by Dr Kaiser, a German, in 1882, and has since been thoroughly explored by various See also:British and German travellers . See " Begleitworte zu der Karte der Gebiete am sudlichen Tanganjika- and Rukwa-See," by See also:Paul Sprigade, in Mitteil. v . Forsch. u . Gelehrten a. d. deutschen Schutzgebieten (See also:Berlin, 1904), with See also:map on the See also:scale of 1:500,000 . |
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