Chicago eagle. [volume] (Chicago, Ill.) 1889-19??, 1901-04-27


that to dilute the sewage from the sys-
TEN thus created will require a How
of nearly 100000 cubic feet a minute
For the present, however. II is held
that Chicago has nothing to fear local
ly. or from the complaint of 81. Louis.
rs to the reduction called for by she
federal authorities at Washington.
Statistics bearing on the dilution of
sewage were presented to President
Jones of the Drainage Board by the
commissioner i'm formal letter. Fig
ured on the basis of results shown u
flow of 100000 cubic feet minute
might he required. but the commission.
cr holds that ~ 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 u vote of to . the engineering
committee of the board decided to rc.
sumo the operation of the Bridgeport
pumps on April -. so that water shall
he supplied TO the Illinois and Michigan
canal. \ committee of grain men in
sisted that this should he done. as. I'M.
der existing conditions. the canal is not
navigable. The matter will come up
for final action before the entire hoard.
~9A
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 with
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 S2i 200, 900
TO more than S4O,OOO,OOO. The Chicago
river may be wldened to $50, 200. $50
or 400 feet, as desired.
Each plan Is supported by volumin.
ous and exhaustive data. With each
Is incorporated alternative plans" 10y
which certain OF the more difficult
phases of each problcm of engineering
encountered may he solved. These
plans. designated as Schemes No. /.
= and D." will he presented within a
few days to the citizens committee
with the recommendation that one he
submitted to the Drainage Board as
the official plan of river improvement.
scheme No. 1" the river is TO be
wldened to 400 feet between the lake
ana Robcy street at cost of more than
S22OOO,OO0. All water needed for dl-
tinl mn. L., 10 I.
the river. The Calumet district Is to
be drained by the extension of the ILL
nois and Michigan canal from the Sag
to the Little Calumet at Blue Island
In conjunction with the Calumet Riv.
err; or by the same extension by way
of northern route" from near sum.
nit southeasterly through Lake and
Hyde Park TO the Calumet near 1l4th
street. The Evanston and North shore
district Is to be drained by canal
through prairie from the lake M VIII
mctte to the North Branch at Law
renee avenue, near Bowmapville. \
pumping station with capacity of CO.
GOO cubic feet minute is to be built.
As an alternative" moderate i'm.
provement' scheme Is offered. Instead
of widening the river 10 400 feet, the
necessary flow Is 10 he secured by an
inlet" dug from the lake ut Sixteenth
street to the river ut Seventeenth
street. This inlet" or feeding canal"
would cost Sl2 100000.
The comparative cost of these plans
follows:
Radical. Moderate.
River and main chan
mel ...,...... 49,. S22, So, so .........
River. inlet ana main
channel ...,.. ..... ......... ST. IUl. T55
Thirty-ninth street
conduit, lake 10
river ~. ,.,,.,, 2,GGO,1a5 2,cGo, IL,
canal" and diver.
sion Of flood" wa
tiers ...... ......., i,GdG,lG0 1905, 100
Lawrence av. sewer
outfal 80. 49,. 1.32S.s22 l,3as, -.
North shore canal,,., 3,Osl.IGO 3,Osl, TGO
Total cost ..,... .s3i, 900 O5G s2i. i3s, 81
In Scheme No. ." the Chicago anu
Calumet problems are treated as II
joint proposition; the North Shore So
luton remaining as in Scheme No. L."
This plan contemplates moderate
improvement of the Chicago river and
a moderate flow, with an auxiliary sup
ply by the Thirty-ninth street conduit.
4 branch channel TO the Calumet river
j. 10 furnish more wafer Compare
tive estimates are.
Northern" Sag Valley"
Thlrty-ninth street Calumet branch from
conduit, branch. Calumet.
operated by gravity s2G, 273, 100 si0,223Jl2
scheme No. 81 Is substantially the