The Ottawa free trader. [volume] (Ottawa, Ill.) 1843-1916, 1846-03-06

ing the dam 9 feet in height, its
length will not exceed 20 feet; tim
her is convenient to the site of
the dam, and stone for the pur-
pose of the rubble work OF the
lock and other walls, can be procur-
ed from the east side of the river
about three fourths of mile from
the site Of the dam. By referring
to the profile accompanying this re-
port, the advantage of this location
will be seen; this dam will remedy
all distractions above this point.
From Henry to one mile below
Peoria, a distance of "a miles there
is no distractions to boats drawing 3
feet of water at the lowest stage !;
by referring to the profile it will be
seen that the water is very deep the
whole distance, except in two or
three places; the depth varies from
4 to Fl feet.
Below Peoria shoal water again
commences and continues to one
and half miles below the mouth of
Copperas creek the amount of eX-
cavation which would require re-
moving in this distace is 24,S33 Gu
bic pards in the neighborhood of
Coppcras creek will be the proper
location for the next dam and lock ;
the distance required to raise the
water in this pool is % miles; Il
dam at this point will have to be
raised 7 feet above low water, this
will give for the height 3 feet OF wa
ter in the west channel and 3 feet
and A inches in the east channel on
Kickapoo bar, 4 feet on Lick creek
bar, and below this a suilicichcy
The length of the dam at this place
will be 800 feet, the average depth
of water is three feet making
the total height of the dam 10 feet ;
the banks on each side of the river
are II feet in height composed OF
clay; the bottom OF the river is com
posed of sand and muscles, 10 the
debth of from one to three feet, and
under this a soft mud; timber is
plenty upon the banks Of the river.
but stone will have to be brought
from Wesley city and perhaps from
Peru; gravelling may be got from
the neighborhood but at an extra cx-
pence.
From Coperas creek to Havan;
distance of l6 miles the water va.
ries in the depth from A to "a feet
and no improvement between thes,
: two points will be necessary.
, From Havana to the foot of Crane
Island, there is much shoal water
at one place called the Devils FL
bow distance of three-quarters OF
, mile the channel is too narrow fol
the passage of two boats of tn,
smallest class, and the depth Of wa
ter in the channel in a low stage i
, less than two feet; the channel a
this place runs directly along thu
, western shore and the whole rive
east of the channel does not atiorc
!, over one foot of water and is fillet
v with logs; this is a diff cult ant
dangerous place for the passage o
{ boats ; below this is Grand Island
$ in an ordinary stage of water boat
f run the west channel, this Is tn
, main river but in low stage Of wa
ter the east channel or side of thu
/ island affords the best water; tn,
3 amount of excavation necessary TO
: a dug channel between Havana AN,
e the foot of Grand Island amounts t
= 36,052 cubic yards; at the foot O
, this island have fixed upon as tn
, location of the third lock and dan.
}. the distance the water will have t.
|, be backed will require a dam fou
h feet in height above low water mark
this will afford 3 feet Of water upo
o the shoal Immediately below Hava
n ma, and A feet in the channel of til
elbow. The banks Of the locatio
o for the dam are ten feet in heigh,
. composed of clay, the length Of tn
dam will be about 500 feet; tn
depth Of the water, averages fee
making the total height of the dar
q 10 feet, stone will have to be brough
!, from Wesley or Peru; at Spark
landing 4 miles below stone ina
perhaps be got; but this is not Ger
/ tain, gravel will be got at an extr
I cost this dam and lock and thos
at Coperas creek are the only one
q at which the materials for the con
y struction are not Immediately at or i
the neighborhood. This location
have not made as permanent; di
y, not sound down the west channe
- but was informed that good waite
q continued up the west channel 70
| some distance, it may be that a NOR
: favorable location may be had fun
=, Their up the island, should the loca
ton be carried up farther, as Sho;
water continues i'm the east cham,