c jmmaries Zoom, to the East of the Schelde-Rijn con
f The fencing off of the Marquisate of Bergen op
nection, will affect the choice of alignment for
the Oesterdam.
e southern alignment of the Philipsdam
e alignment of the southern section of the
ilipsdam still has to be determined. Four
ernative alignments have been proposed,
ich are to be judged and compared as to
c 'eria of a.o. planning, environment, traffic
a d agriculture.
T 9 most easterly proposed alignment appears
r most favourable from both the agricultural
a j environmental aspects.
ing discussions with the population a fifth
ssibility, still more to the East, evolved.
e push-barge locks in the Philipsdam
:he dam two locks are to be built, allowing
->ush tow consisting of four barges to pass
ough. Around 1990 a third lock will be
cessary. The locks shall be equipped with a
.tern to combat salt and fresh water loads
the fresh and salt basins linked to the
I ks.
e lock doors will be of the rolling door type,
locking operations a system has been
sloped making use of a high and a low
ine basin, ducts, gates and pumping faci
as.
alignment of the Oesterdam and the
I cing in of the Marquisate of Bergen op
I ;>m
I ween Tholen and Zuid-Beveland, in the
i er part of the Oosterschelde, a separation
is to be built. In this article the possible
nment of this dam is discussed as to the
i e of its connection with Tholen island,
róssing of the Tholen and Marolle gullies
its traffic and environmental repercus-
s is.
Discharge possibilities for the Zoommeer
(Bordering Lake)
The Zoommeer, created behind the Philips-
dam and the Oesterdam, is meant to be a
fresh water lake. In order to achieve the re
quired salinities a discharge medium will be
needed at the south-end of the lake. In this
way the lake can be flushed with fresh water
from the northern basin.
A discharging channel through the narrow
part of the peninsula of Zuid-Beveland, run
ning partly parallel to the Schelde-Rijn
connection, will make the discharge possible
on the Westerschelde.
The exact point where the discharging chan
nel will join up with the Westerschelde still
has to be determined.
The effect of the water from the Kreekrak
locks on the water quality of the Oosterschelde
When passing through the Kreekrak locks,
water of the Antwerp harbours and the Schelde
river reaches the Oosterschelde. Tests have
been made to determine to what extent the
Oosterschelde is polluted by this discharge.
One of the aspects that was established in a
hydraulic model was the refreshment coef
ficient of the water in the estuary.
The environmental pollution caused by the
Kreekrak locks is at present tolerable as a
result of the exchange with seawater and the
delution of the lock water.
The improvement of the channel across Zuid-
Beveland
The channel across Zuid-Beveland is to be
improved and the Wemeldinge locks are to be
discontinued before 1985. The Hansweert
locks are to be replaced by larger facilities
suitable to accommodate push tows con
sisting of fours barges.
Probably a new entrance near Wemeldinge
will be dredged, more to the East than the
present one. The middle section of the
channel is going to be widened towards the
West. Near Flansweert the new locks are to be
built easterly of the present locks.
The dredged material is to be stored on a
dumping place in the Oosterschelde, in such
a way that the environment will not be af
fected.
109
