The St. Mary banner., 1922-11-25

sanitation will be very great even in
sugar making.
IRRIGATION AND SANITATiO>
Water usually begins to rise in
tae Atchafalaya in December and
rises into May when it begins to re
t2ie and reaches dead low in the
,a.e Summer and Fall. Throughout
the Winter and Spring and early
Gcnn2er there viii be a good head
of water flowing into Bayou Techc
through the canal This would have
The tendency to drive the hvacinth
oat and with a little help It is cn-
tirely practicable to remove every
sprig of kyacinth from Bayou Teche.
This would greatly purify the water
as TIE cliaf cause Cf pollution IN
Summer is the fermentation OF the
ayacir-h dying from being bruised
o.. ether Causes. This fe~nentatiJI
Kills tie 1isf ard the dead ish, N
rI1a, incrae4es lie pollution. This
r3t-e-2 wafer chvs III flows little
WITH each change OF tide but never
goes anywhere ard there is so little
drainage into BAYOU Teche that 1t
requires very neavy rain to send
rigation always takes place when
there is a good head Of water in the
lake, hence, the more water is
pumped cut the faster it will be
replenished as the lowering process
increases the slope and correspond
ingly speeds up the flow. This canal
would insure an abundant supply of
water for all irrigation purposes on
Bayou Teche. At ordinary Spring
stages Of water on the lake, there
would be TO difficulty of getting
120CO to 10000 cubic feet of water
per second, which, without allowing
for absorption, would put 8 inches
Ct water on 10000 acres in "a hours.
FLOOD DANGER.
The low water cross section Of
Bayou Teche gradually increases as
you go down stream. If, however.
water could enter the bayou at the
point designated for this canal, the
high water cross section would in
crease very rapidly at the upper end
but more slowly as you go down
stream Hence, at high water, the
cross section would approach uni
formity and with it the slope and
velocity.
The highest wafer in Bayou Teche
this year at Gonsoulin's bridge was
only 2b feet below the highest wa
ter in Lake Dauterive, this year and
5H feet below the high water of
1912 and 612 feet below the high
water of 1882. AS 1882 was such an
exceptional water brought about by
conditions which are not apt to oc-
('''r again, let US take the water of
1q1oa. rcaXimum against the dan
rors Of u-s;c, it is necessary to
guard
Due to the fact that the ross
section of the canal through wlich
he water from the lake will reach
Bayou Teche will be only about one
Iourth Of that of Bayou Teche, the
velocity in the canal will be about
tour times as much as in the BAYOU.
ihe total fall between Lake Dau-
terive and Morgan City in 1912 was
about IL feet. The canal from BAYOU
Portage will consume about 2 feet
o. this, leaving the water in Bayou
ieche at Gonsoulin's bridge about 3
feet higher than it was this wear,
from inquiries of Messrs. Vaughn
and Mestayer, learn that this would
DO no harm except perhaps to gard
ems that We're placed too low along
The bayou bank
Now, this increased water level
would diminish in an almost uniform
ratio IN descending the stream and
be practically nothing at the mouth
OF the bayou above Patterson. Two
and half feet more could be ex-
pected at New iberia than this year,
TWO feet more at Jeanerette, at
Franklin less than foot. These fig
ures are based on 1912 water. As
70 increased velocity in Bayou Teche
It could not become more than a foot
per second or say three quarters Of
2 mile per hour. In fact it does not
figure much more than half that
much. Even if the water was let in
to Bayou Teche with the full capa-
city of the Bayou at Loreauville.
the small slope of IL feet in II
miles could not possibly produce a
velocity of more than a foot and a
quarter per second or still some
thing less than a mile per hour.
As a practical confederation OF
these figures, l cite the canal from
Bayou Teche above the keystone
Locks into Vermilion River. Not
withstandin@, this years flood crea-
ted very high stage on Bayou
Feche above the Keystone Locks, the
volume of water that the canal could
put into Vermilion River raised the
river but little because the capacity
If Vermilion River is far greater
han that of the canal. The Baldwin ,
Lumber Co. expected good floating
conditions on accOupt of thie ,t,ro1 :