The Greenville times. [volume] (Greenville, Miss.) 1868-1917, 1890-07-12
FALLACT OF oUTlEfs--NEW PHYsICA,
KTIDESUE.

Evidences of the utter fallacy old a
outlet theory advanced by Capt. d.evee
Gen and others, who have MAJ
merely superficial study of the rarrar
are abundant, but the position of across
Eads and the United States EngD.
that outlets invariably shoal the Fertise
channel below new lateral on. across
conclusiyely proven by recent Avon
ings at the Nita crevasse that theaccom-
of the investigations of the Ications
States engineers at that pointise of the
ingly interesting. nday in
The break on the Nita plan
was one of the most serious in pison be
volume Of water discharged th Refuge
occurred in the recent histd Is.
Louisiana. On May 8 402, ,56eV. I. Il
feet of water per second or nesent, and
third of the whole volume Of
was pouring through the gse. Prince, H..
days later, OWING to breakNickliff, Ben
discharge was reduced Sr, and w.
cubic per second. When tmmissioners
were forwarded to Gen. CO road from
expressed some surprise aiation to road
tude of the discharge andniatlon, and
new surveys be made. L. meeting.
and proved the accuracyrtise for bids
calculations. isk Bayou in
Capt. Kingman and
nent engineers maintaihe south gate
creyasse would have a, b. d. Green's
ofT tha .k.n,al Af faA
below the break. Re,pointment OF
taken by a system differ
used to obtain the resultsloard that the
has proved this assumpin filed on the
doubt. The discharges tquired by law,
been taken In the inf the opinion
crevasse itself, but Cplete said roll
determined, for the puincgligence OF
further demonstrating the to the flood
these surveys, which, ovuring a con-
swift current, were taken, 1t Is
difficulty, to get the disch That Maui
river above and below the bent assessor,
substraction get at the volue said roll
through the break. For ii in SePtem.
sections of the river abour filing and
above and below the b
selected. IL site FOL
When the surveys were II;
points above indicated thed, That ths
fallen within Its banks, anof the Fiftt
of the ends of the shattered eenville, IL
visible. Consequently the flo Blanton, II
the crevasse was reduced byt jail ma,
quite one-half, and was Rasptcd; th'
through the channel cut in thtupon the
the force of the inrushing walanton i
secure the discharges at thlot to thu
points the surveyor was compeeir sue
ascertain the area and form zee from
channel at each section as well AZ shal
velocity of the current. ,d i
The channel at the section ab1ee'
the break, although removed litplt
more than mile from the section beo
low it, was found to be of much
greater area and is very nearly a
perfect channel. The channel below
the break, which in probability was OF
practically the same form as that above
It before the disaster, has become con-
tracted and distorted. The cause OF
this change Is obviously. The chan
mel below the break being original
| ly of the same area as that
above, when one-third of the cur
rent found an outlet through the
crevasse, it necessarily reduced the
velocity of the current 33 per cent in
the lower section. This reduction ol
velocity caused a deposit of sediment
principally, as is always the case, on
that side OF the channel opposite the
outlet, though the depth in the deepest
! part was decreased ten feet. The re
duction in the velocity of the current
, in the volume of the discharge and II
the area of the channel is given In th'
tables below, compiled by the United
, States Engineer Corps: