Assessment of Water and Salt Balance in Manzala Irrigation and Drainage System Area

Maha fahmy, Walaa elNashar, Amgad khorshed

Abstract


The main objectives of the study aim at optimal exploitation of the water resources
in Eastern Nile Delta region. Until now, the Ministry of Water Resources and
Irrigation (MWRI) is managing water resources and the irrigation system by itself
with high input of staff and high capital investment. The mission of MWRI is to
ensure that Egypt's water resources are developed, allocated, used and preserved in
a manner which is sustainable, equitable and efficient. The research work evaluated
the water balance, the salt balance, the water quality and the management plans in
the study area from August 2000 to July 2010, also, attempt a new water
management plan. The water and salt balance first executed for the Eastern Nile
Delta region. To create work breakdown structure, the Eastern Nile Delta region
divided into two parts according to the irrigation and drainage systems. The first
one is Manzala Irrigation and Drainage System (MIDS), the second is Ismailia
Irrigation and Drainage System(IIDS). In this paper, a water and salt balance
executed for MIDS. MIDS boundaries are Manzala Lake from the north, dammitta
branch from the west, IIDS from the east and Greater cairo and IIDS from the
south. Results of water balance showed gradually increasing of domestic and
industrial water discharges from Greater Cairo to MIDS, the influent fresh water
was almost constant and didn’t completely follow ET demands and the intruding
seawater was almost decreasing. Results of salt balance elements showed adding
extra soil salt loads to MIDS area. The MIDS water and salt balance results didn’t
comply with MWRI mission.

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