miles at the Chicago end previously men- The work inthe Chicago River has involved, first, tically on the same level, about 580 feet above the sea, tioned, which were constructed with a width of 92 feet while Lake Erie is only about eight feet lower. Lake dredging from the lake to Roby Street, to a… … plaines River, a stream of wide fluctuations and no re- The basin of the lower three of the lakes is so deli- flowline. Second, constructing between Monroe and Van Buren Streets a covered conduit or bypass through cately poised, that only four feet of rocks and two of liable fountain supply, was…
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