48
-
at a much lower level than that from Pok footun - and an additorial conduct pipe frour it to the City would be necebary.
shown
I think I have now conclusively that we must look cle where than to the Tokfoolum Vally for the additional supply of 376,000,000, Gallons - shill wanted, and it renxuris therefore for
me to shew where this & can be obtained) quanlity
and these
by a reference to the plan it will be seen that there are only two Valleys which have anything like the extent - of gathering ground required. are those having their outfalls at Aberdeen - and Zytam, and colored on the plan red and green respectively
We will take these in order and examine first wito the Aberdeen theam.
It has its outfall a little to the Erstward of the Village of aberdeen, and is known to visitors to Little
as that forming the water
huy động
fall
at the Causeway between these
two Villages.
The only position for
a dan in
догдо
this Valley would be at the
little below the 300 feet contour level which
is therefore the highest level at which? water could be drawn off:
area
That Contour level here shews an
of Jacres whilst the 400 ft Contour gives 35 acres - At Reservoir therefore having a depth of water of 50 feet above· the 300 feet level would inpound! 285,000,000 gallons at least- Embankment would have to be 60 feet
or
70 ft high,
height
Dir
The
or about the same
as that at Pok foolum.
The gathering ground would have
area
fall of ram,
do
of 567 acres and the miniinuum.
assumed before of 19 urches available, would yield 244,000,000 Gallons for storage.
?
The difficulty then arises of getting: this water to the City.
be hoo
there would
ways of effecting this _ either