[11] Blue Nile water flowing up the White Nile and decreasing the normal discharge.
TABLE XXV.--_Minimum and Maximum Discharges of the Nile and its tributaries in 1902 and 1903._
1902 =============+===========+===================+=================== Name of | Locality. | MINIMUM SUMMER | MAXIMUM FLOOD River. | | DISCHARGE M³ | DISCHARGE M³ | | PER SECOND | PER SECOND | +----------+--------+----------+-------- | | Date. | Dis- | Date. | Dis- | | | charge.| | charge. -------------+-----------+----------+--------+----------+-------- Victoria Nile|Ripon Falls|December | 480|May | 580 Albert Nile |Wadelaï |April 5th | 530|Dec. 10th | 760 „ |Gondokoro |April 15th| 540|Aug. 24th | 1360 „ |Above Sobat| | | | Sobat |Mouth | | | | White Nile |Tewfikieh |April |app: 340| | „ |Duem |May, 11th | 340|Dec. 29th | 1500 Blue Nile |Khartoum |April 15th| 180|Aug. 29th | 7200 Atbara |Mouth | | |Sept. 8th | 2020 Nile |Wadi Haifa |June 2nd | 490| | |Assuân | | |Sept. 17th| 7000 1903 Victoria Nile|Ripon Falls|January | 490|July | 830 Albert Nile |Wadelaï |April 5th | 630|December | 1070 „ |Gondokoro |April 10th| 680|Sept. 23rd| 2600 „ |Above Sobat|April | 430| | 430 Sobat |Mouth |April 15th| 40|Sept. 15th| 1040 White Nile |Tewfikieh |April | 380|Dec. 15th | 1470 „ |Duem |May 9th | 400|Nov. 15th | 1670 Blue Nile |Khartoum |May 5th | 100|Aug. 28th | 9600 Atbara |Mouth | | |Aug. 30th | 3100 Nile |Wadi Haifa |May 21st | 420| | |Assuân | | |Sept. 12th| 9000 =============+===========+==========+========+==========+========
TABLE XXVI.--_Table of mean monthly Discharges at Khartoum, Assuân and Cairo, for the maximum, minimum and mean years._
=========+==================+==================+================== Month | 1877-78 | 1878-79 | MEAN OF | MINIMUM YEAR | MAXIMUM YEAR | 20 YEARS +-----+-----+------+-----+-----+------+-----+-----+------ | Blue| As- |Cairo.| Blue| As- |Cairo.| Blue| As- |Cairo. | Nile|suân.| | Nile|suân.| | Nile|suân.| | at | | | at | | | at | | |Khar-| | |Khar-| | |Khar-| | |toum.| | |toum.| | |toum.| | ---------+-----+-----+------+-----+-----+------+-----+-----+------ June | 1000| 800| 600 | 1000| 500| 250 | 1000| 750| 500 July | 2800| 2400| 1100 | 3500| 2000| 900 | 2800| 2200| 1100 August | 5300| 5600| 3900 | 8200| 7900| 5200 | 7000| 7900| 5300 September| 4700| 5900| 4400 |12500|12100| 8600 | 8500| 9200| 7200 October | 2500| 4000| 3900 | 8000| 9300|10300 | 4500| 6000| 6900 November | ..| 2400| 2550 | ..| 4700| 6500 | ..| 3300| 3700 December | ..| 1500| 1600 | ..| 3200| 3600 | ..| 2200| 2300 January | ..| 1200| 1300 | ..| 2400| 2600 | ..| 1600| 1600 February | ..| 800| 800 | ..| 2100| 2100 | ..| 1200| 1200 March | ..| 600| 550 | ..| 1900| 1900 | ..| 850| 800 April | ..| 500| 400 | ..| 1600| 1600 | ..| 700| 620 May | ..| 400| 300 | ..| 1500| 1500 | ..| 600| 520 ---------+-----+-----+------+-----+-----+------+-----+-----+------ Mean | ..| 2175| 1783 | ..| 4100| 3754 | ..| 3041| 2645 ---------+-----+-----+------+-----+-----+------+-----+-----+------