Chicago eagle. [volume] (Chicago, Ill.) 1889-19??, 1901-05-04

Inat 10 uliule tue sewage IIOm tue eyS-
ten thus created will require flow
Of nearly 100000 cubic feet a minute.
For the present, however, II Is held
that Chicago has nothing to fear local
~. or from the complaint of st. Louis.
as to the reduction called for by the
federal authorities at Washington.
Statistics bearing on the dilutiou of
sewage were presented to President
Jones of the Drainage Board by the
commissioner In formal letter. Fig
ured on the basis of results shown u
flow Of 100000 cubic feet minute
might be required, but the commission.
er holds that "a flow of one-half the
theoretical amount of $4,000 cubic feet
per minute" will be satisfactory and
fulfill the requirements of the Sanitary
District act.
BY a vote Of to Q the engineering
committee of the board decided to 10.
sumo the operation of the Bridgeport
pumps on April -. so that water shall
be supplied to the Illinois and Michigan
canal. \ committee of grain men in
sisted That this should be done. as. UNI
der existing conditions. the canal Is not
navigable. The matter will come up
for final action before the entire board.
40
Three plans for the enlargement of
the Chicago river to provide the flow of
water through the drainage canal re-
qulred by law without interfering will,
navigation We're presented Wednesday
by the expert commission. The means
proposed provide also for the diversion
to the canal Of all drainage from Ev.
anston to the Indiana line. The cost
Of the schemes range from S24 900, OOO
to more than SiO,OOOOOO. The Chicago
river may be widened to $50, 200, go
or 400 feet, as desired.
Each plan Is supported by volumln.
Gus and exhaustive data. With each
Is incorporated alternative plans" by
which certain of the more difficult
phases of each problem of engineering
encountered may be solved. These
plans. designated as schemes No. I,
. and B." will he presented within u
few days to the, citizens committed
with the recommendation that one be
submitted to the Drainage Board rs
the official plan Of river Improvement
| Scheme No. I" the river Is to be
widened to 400 feet between the lake
and RObey street at a cost of more than
S22,OOO,OOO. All water needed for dl.
luton purposes Is 10 be taken through
the river. The Calumet district Is to
be drained by the extension OF the iii.
nois and Michigan canal from the Sag
to the Little Calumet at Blue Island
I'm conjunction with the Calumet Riv.
er; or by the same extension by way
/ Of northern route from near Sum.
init sontheasterly through Lake and
Hyde Park to the Calumet near 114th
street. The Evanston and North Shore
district Is To he drained by u canal
| through prairie from tire lake ut VIII
mette TO the North Branch at Law,
renee avenue, near Bowmanyille. \
| pumping station with a capacity of 60,
600 cubic feet q minute Is TO be built.
As an alternative" moderate i'm.
provement' scheme Is offered. Instead
| of widening the river TO 400 feet, the
necessary flow is to he secured by an
! inlet" dug from the lake at sixteenth
/ street 10 the river AT Seventeenth
street. This inlet" or feeding canal
would cost ST. 100000.
| The comparative cost OF these plan,
follows:
Radical. Moderate"
River and main chan ..
river inlet ana main ",''',,,
| channel .,,,,, $50, ,..,,.,,. Sl2, Ibl 80
| Thirty'nlnth street
conduit lake 10 .....
cs Hmm :.'ipo,I,h,crn -'"'' -"'''"
canal and diver.
sion Of Hood wa
! l'f> 'r,''' '''''''' i''b'thN i,'Io,i''
| I.aWrcuc" ay, sewer
outfoii ,..,...;.... I,a2s,s:2 I,a:,..s;
Total cost 500. .s:lI, go, 05G S2i. AIS 90.
In Scheme No. ~ the Chicago an,
Calumet problems are treated as ;
joint proposition; the North Shore so
luton remaining as in Scheme No. L.
This plan contemplates moderate
Improvement" of the Chicago river an,
a moderate flow, with an auxiliary sup
ply by the Thirty-ninth street conduit
4 branch channel to the Calumet rive
is 10 furnish more water. Compare
tive estimates are:
Northern" Sag valley
Thirty.Hlnth street Calumet branch from
! conduit. branch. Calumet,
Operated by gravity S2G.2T3. 100 siO,2?3,jl.
Operated by pumping 2s,lsj,s2J 3G,sJ2' ~
Scheme No. 3" Is substantially III
same a. Scheme No. g" differing il
the treatment and In the capacity o