Chicago eagle. [volume] (Chicago, Ill.) 1889-19??, 1901-05-11

Inal 10 ulluIc liie SpWdgc from IIc SyS-
TEN thus created will require n flow
of nearly 100000 cubic feet minute.
For the present. however. II Is held
that Chicago has nothing to fear local
ly. or from the complaint Of st. Louis.
as to the reduction called for by the
federal authorities at Washington.
Statistics bearing on the dilutiOn 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 a
flow Of 100000 cubic feet n minute
might be required. but the commission.
or holds that "a flow of one-half the
theoretical amount of 100000 cubic feet
per minute" will he satisfactory and
fulfill the requirements of the Sanitary
District act.
by a vote Of to 2 the engineering
committee Of the board decided to 10.
sumo the operation of the Bridgeport
pumps on April "a, so that water shall
be supplied to the Illinois and Michigan
canal. A committee of grain men in
sisted that this should be done. as, un-
der existing conditions. the canal Is not
navigablc. The matter will come up
for final action before the entire board
Three plans for the enlargement of
the Chicago river to provide the flow Of
water through the drainage canal re-
CURED by law without interfering with
navigation were 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 $4,000, 900
to more than SiO,OOOOOO. The Chicago
river may be wldened to $50, 200, go
or 400 feet, as desired.
Each plan Is supported by volumin.
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 rs "schemes No. /.
. and B." will be presented within Il
few days to the citizens committee
with the recommendation that one be
submitted to the Drainage Board as
the official plan of river improvement
scheme No. H. the river Is to he
wldened to 400 feet between the lake
and RObcy street ut a cost Of more than
S22,OOO,OOO. All water needed for dl.
luton purposes Is to be taken through
the river. The Calumet district Is to
be drained by the extension of the Iii
nos and Michigan canal from the Sag
to the Little Calumet ut Blue Island
In conjunction with the Calumet Riv-
or: or by the same extension by way
of a northern route" from near sum
nit sOutheastcrly through Lake and
Hyde Park to the Calumet near 114tl
street. The Evanston and North Shore
district Is TO be drained by n canal
through prairie from the lake at VIII
mette to the North Branch at Law
renee avenue, near Bowmanvillc. A
pumping station with capacity of 60,
900 cubic feet n minute Is 10 Zoe built
AZ an alternative" moderate i'm
proycment" scheme Is offered. Instead
of widening the river 10 400 feet. tn,
necessary flow Is 10 be secured by m
"inlet" dug from the lake NJ sixteenth
street to the river AT Seventeenth
street This "lnlct" or feeding canal
would cost So 0o0,O00.
The comparative cost of these plan
follows:
= Radical. Moderate
River and main chan
RIVER Inlet aud main ''''''"
= channel ...... ..... .,....,.. 81. Iul, -,
Thrty-nlnth street
conduit, lake 10 .
nn"r '''';.,o ,. sii,..; -''P'ls -"oo'l"
canal" aud diver.
sion uf Hood wa.
! tiers ,,,,,. ,..,.,., iGiG, 100 iNiG, lU
/ Lawrence Az, sewer
p outfall ,..... go. l,3as,sga la2s, :.
North shore caual.... aUSl,7GO aOsl. 40
Total cost .......S34, G00,O5G s2i rs, Da
In Scheme No. ." the Chicago an,
Calumet problems are treated as
joint proposition; the North Shore "a
luton remaining as in scheme No. l..
/, This plan contemplateS "modcrat
improvement" of the Chicago river am
, moderate flow, with an auxiliary sup
ply by the Thirty-nlnth street conduit
A branch channel to the Calumet rive
Is to furnish more water. Compare
tive estimates are:
Northern" Sag Valley
. Thirtg-nlnth street Calumet branch from
conduit. branch. Calumet.
Operated by gravity S2G. 273 100 siO223,5l.
! Operated by pumping ~, ls5,s29 36s32,I2'
Scheme No. 3" Is substantially In,
: same as "Schcme No. g" differing il
the treatment and in the capacity o