Digital Signal Processing Reference
In-Depth Information
of the northern section of the Delta. These lakes receive a considerable amount of drainage water from
the Delta, and are separated from the sea by narrow strips of land and have outlets to the sea, (Amer et
al., 1989).
Figure (5-2)
shows the map of the Nile Delta.
The Damietta Branch begins at the Delta Barrage and ends 220 km downstream at the Faraskour dam
near Damietta. The Rosetta Branch also starts at the Delta Barrage and flows to the Mediterranean at
Rosetta. Deterioration in water quality of the two branches does occur in a northward direction due to
the disposal of municipal and industrial effluents and agricultural drainage as well as increasing
pollutant concentration due to decreasing flow.
The Rosetta Branch receives high oil and grease concentrations, nutrients, organic loads, and solids.
This is a result of the discharge of a part of the wastewater of Greater Cairo through the Muheet and
Rahawy drains as well as some discharges of pesticides and toxic chemicals from other sources. Also,
salts, suspended matter and herbicide residue reach the river from agricultural drains.
The Damietta Branch receives nutrients, organic loads, grease and oils as a result of discharges from
the Talkha fertiliser industry and drainage of herbicides and pesticides from agricultural drains
especially near the Faraskour dam.
total dissolved solids (TDS) increases in the branches up to
approximately 500 mg/l.
Irrigation canals have hardly been referred to with respect to water quality monitoring. The canals
have a water quality similar to that at the point of diversion from the Nile. The flow in the canals
varies with irrigation demands. Most of these canals are major sources for drinking water treatment
plants. However, many canals are suffering from the following discharges:
Industrial and domestic wastes (liquid and solid) from canal banks, as is the case in the
Mahmoudia and Ismailia canals.
Residuals from fertilisers, molluscicides (snail killer, for instance for the control of Bilharziasis)
and herbicides which find their way to the irrigation water system.
A mix of agricultural, domestic and industrial wastewater at locations where reuse pumping
stations add drainage water to the canals.
Figure (5-2): Nile Delta region Map
Search WWH ::
Custom Search