EFFECT OF THE FLOOD WATER ON PHYSICQ..,..CHEMICAL CHARACTERISTICS OF LAKE NUBIA.

EFFECT OF THE FLOOD WATER ON PHYSICQ..,..CHEMICAL
CHARACTERISTICS OF LAKE NUBIA.
ABO-EL-SAMIE ELEWA.
National Institute of oceanography and Fisheries, Cairo,
Egypt.
ABSTRACT
The inflow of turbid flood water, affects the physical
and chemical conditions of Lake Nubia water. Thermal
stratification and dissolved oxygen profiles along the Lake
were destructed. Higher values of electrical conductivity,
HCO”, COJ”” and S04″ measured during the flood period are
due to the first washing of the dissolved salts through the
Nile tributries. After sedimentation of the suspended
particles, the sharp decrease in the concentrations of Ca++.
Mg++ and Ne+ is mostly due to the deposition through the
electrical double layer on the surface of the fine suspended
particles.