The daily Cairo bulletin. (Cairo, Ill.) 1878-1???, 1881-04-10
NEW SERIES---NO. 245

OF the Cairo Land Company. The latter
was repaired and strengthened by the
United States. The work wholly new
covers distance of 10,700 feet built in
1876, TT, '78, and 49, 1t consists of a brush
mattress covering the foot of the slope. and
a covering of stone above low-water mark,
the latter extending to height of about
~ feet above low-water 1t is proposed to
protect the bank above that level to a
height OF about 30 feet above low water by
plantation OF willows. For this purpose
$4,000 have been allotted from the appro
priation of June IA, 1880.
| When that is done the original project
Will be completed and the work will have
reached stage when it becomes of secon
Diary Importance in the general scheme OF
improving the navigation. The local in
terest desires Its extension, and this, while
not OF primary importance, will be useful
to the navigation interests IL would be
injurious to the latter, however, if it be al
lowed to absorb the funds needed so much
more at other points.
It's recommended, therefore, that this
work be separately provided for The sum
OF $4,000 can be expended to advantage
during the year ending June 30, 1882 if
specially and independently provided. 1t
is proposed to employ 1t in removing por-
tons of two of the old spur-dikes, and in
extending the protection about 1900 feet
down stream.
REPORT OF MR.. CHARLES s. TRUE, ASSISTANT
ENGINEER.
SAINT LOUIS, Mo-, January IL, 1880.
GENERAL: The following report of work
done at Cairo Protection and Kaskaskia
Protection during the half year from July
|, to December 81, 1870, is respectfully
submitted
CAIRO PROTECTION.
Work in progress at Cairo Protection on
the Both day of June, 1879, was continued
till October IA, 1879. The revetment of
the bank was extended up stream 1900
feet above previous works by sinking RATS
OF brush out to deep water and covering the
| sloping bank between these RATS and the
steep top banks with thin layer of stone
The brush RATS were mostly 20 feet wide,
| uhN wv piotSStlou WI btOuC lUSluC tIlt THUS
was irregular in width according to the
shape of the bank, but would average about
Is feet. The height to which the revet-
ment was carried was about to 20.foot
stage OF water in the Mississippi river when
the Ohio river is low, or 25foot stage
when the Ohio has a good navigable depth.
The protection begun during the first halt
year of 1879 was raised to similar height,
and some additions were made to the work
OF former years to repair weak places.
Some work was done to protect the bank
between the spur-dikes placed by the Cairo
Land Company.
| About 900 cubic yards OF stone we're
taken from the outer end of the up stream
spur, yet remaining, and placed on the
bank above and between the spurs. OF
this stone, 29170 cubic yards were moved
on barge, and the remainder by wheel
barrows.
A brush raft was sunk Just below the
upper spur, and curtain of brush was
stretched between the Sd and 4th spurs to
break the current of the eddy and induce
deposit. This curtain was secured at the
surface of the water by boom of dry logs,
and the free edge of the curtain was
weighted with stone to carry it to the bot
| tom.
The quantities Of material used on the
protection during the half year, including
3l42O cords Of brush on barges, July I,
but not including stone taken from the
spur-dikes, were; on continuation of pro-
lection begun in 1872 l,S1910 cords brush,
l3,10S cubic yards stone, and on repairs of
revctment of former years, 11640 cords
brush, $4,000 cubic yards stone.
The brush used was cut by hired labor
on tow-heads in the Mississippi river, and
the stone was quarried by hired labor at
leased quarries at Gray's Point, Mo.
The transportation of material was by
barges and tow boat owned and operated
by the government.
The new protection placed during the
year 1879 covered front of 1900 feet.
This was rather light, and will need addi-
tons and repairs when the river shows its |
weak places. The revetment will need to |
be raised some when the top bank is sloped |
enough to carry stone with safety. The to-
'"l lCuS III VI Dduhp dl SdlIO ITOLcCtlOu, on |
which work has been done, including the
stone placed by the Cairo Land Company,
is $4,000 feet. The river is attacking the
banks below this work, and the protection
may need to be extended some in both
directions. The condition OF the work
when last examined was good.
Two bad piles OF stone, formed by the
river washing the bank back from the two
up stream spur-dikes placed by the Cairo
Land Company, endanger navigation dur
ing low water. In the early part of Octo-
Der the water over these stones was but two
feet deep. At that time the width of chan
mel between the up stream pile and the
Illinois shore was 545 feet, and between
the down stream pile and the shore 1886
feet. A new shore line was run and stakes
cat nnch Inn faat "a, rofor eynrL IN