The Nile in 1904

Appendix H

Table XXV.—Minimum and Maximum Discharges of the Nile and its tributaries in 1902 and 1903.

Appendix I.

Table XXVI.—Table of mean monthly Discharges at Khartoum, Assuân and Cairo, for the maximum, minimum and mean years.

Note.—The very high discharges at Assuân and Cairo in April and May 1879; the minimum discharge of that year was about 1500 cubic metres per second. There has never been any discharge like that since.

Appendix J.
DISCHARGE TABLES OF THE DIFFERENT GAUGES OF THE NILE AND ITS TRIBUTAIRIES.

Table XXVII.—Discharges table of the Victoria Nile at the Ripon Falls.

Table XXVIII.—Discharge table of the Albert Nile at Wadelaï.

Table XXIX.—Discharge Table of the Albert Nile at the Gondokoro gauge.

Table XXX.—Discharge table of the Albert Nile at the Mongalla gauge, 32 kilometres north of Gondokoro.

Table XXXI.—Discharge table of the Sobat river at Dulaib Hilla.

This gauge is in backwater when the north
end of the Sudd region is flooded.

Table XXXII.—Discharge Table of the White Nile at Tewfikieh downstream of Sobat junction referred to Tewfikia Gauge.

Table XXXIII.—Discharge Table of the White Nile at Duem in Winter and Summer when the Blue Nile is low.

This table is only very approximative.

Table XXXIV.—Discharge table of the Blue Nile at Wad Medani.

(1) These discharges include the Rahad river. They represent the discharges below the Rahad river junction referred to the Wad Medani gauge.

(2) During a high flood the river scours, and it silts during a low flood; consequently for exact discharges below 5 metres, the section of the river should be taken annually in December.

Table XXXV.—Discharge Table of the Blue Nile at the Khartoum Gauge.

This gauge is in backwater when the White Nile is discharging more than the Blue Nile.

Table XXXVI.—Discharge Table of the Atbara river referred to the Khasm el Girba Gauge.

Table XXXVII.—Discharge table for the Assuân, Assiut and Cairo Gauges.

The gauges are in metres and are referred to mean low-water level as zero.

N.B.—At Assiut R. L. 45·55, according to the reservoir levels, is R. L. 45·05 according to the 4th Circle levels.

(The discharges are in cubic metres per second.)

This discharge table may be used approximately for any gauge on the Nile north of Assuân with its zero at mean low-water level; adding ·5 to the gauge in Kena Province, and deducting ·5 from the gauge in Minieh and Beni-Suef.

If the river is rising, take the discharge corresponding to the higher gauge; if falling or stationary to the lower one.

Table XXXVIII.

Discharge Table of the Wady Halfa Gauge, for use at Assuân when the Assuân Dam is being regulated on, and consequently the Assuân Gauge no longer represents the normal discharge of the Nile. At this stage of the river it may be assumed that the water travels normally between Wady Halfa and Assuân in 3 or 4 days.

Table XXXIX.—Discharge of the Rosetta Branch of the Nile referred to the Delta Barrage north of Cairo.

Zero of the gauge R. L. 10·00 metres above mean sea.

Table XL.—Discharge of the Damietta Branch of the Nile referred to the Delta Barrage north of Cairo.

Note.—Zero of the gauge R. L. 10·00 metres above mean sea.

Appendix K.
TABLES GIVING DETAILED INFORMATION ABOUT THE NILE BETWEEN ASSUÂN AND CAIRO.

Table XLI.—Date of Heights of Minimum gauges in summer and Maximum gauges in flood at Assuan.

Zero is R. L. 85·00 metres or mean low water level.

Table XLII.—Table giving areas of cross sections of the Nile, from Assuân to Cairo.

Table XLIII.—Table of the cubic contents of the trough of the Nile from Assuân to Cairo in millions of cubic metres.

Table XLIV.—Widths of water surface from Assuân to Cairo.

Table XLV.—Slope of water surface in the Nile. Assuân to Cairo.