Transactions . pure and healthy to drink; but when one considers thefact that on a lake-front of 32 miles a population ot 2,0,000drains to the lake at all times, and 1,493,000 whenever the riverfrom any cause discharges lakeward, there seems to be suf-ficient reason for action. The city-limits include an area of181 square miles, or 116,320 acres. There were built, up toJanuary 1, 1892, 4,690,338 feet or miles of sewers,since 1855. The great question has been what to do with thesewage, and many committees have made it a study. Fig 5 shows the fluctuations in the level of Lake Michiganfo
Transactions . pure and healthy to drink; but when one considers thefact that on a lake-front of 32 miles a population ot 2,0,000drains to the lake at all times, and 1,493,000 whenever the riverfrom any cause discharges lakeward, there seems to be suf-ficient reason for action. The city-limits include an area of181 square miles, or 116,320 acres. There were built, up toJanuary 1, 1892, 4,690,338 feet or miles of sewers,since 1855. The great question has been what to do with thesewage, and many committees have made it a study. Fig 5 shows the fluctuations in the level of Lake Michiganfor more than half a century. At the present time the lake issteadily rising, after a period of continued depression It is in-teresting to note that the levels of the other great lakes do notvary coincident^ with that of Lake Michigan. Thus it is said THE CHICAGO MAIN DRAINAGE CHANNEL. 295 that at the low period of 1896 in the latter, Lake Superiorshowed the highest stage of water recorded in its histoiy. Fig. ERICAN BANK NOTE CC Site of Chicago after the Lake had been Filled and the Chicago Kiver Formed On September 12,1885, a supplementary committee, of whichMr. Oasian Guthrie and Mr. L. E. Cooley were members, wasappointed to make a report to the executive committee of the 296 THE CHICAGO MAIN DRAINAGE CHANNEL. Citizens Association. This report was hastened by the fall of6i inches of rain, September 2d, which cansed a tremendousflood to pour from the Des Raines river, down through theOden ditch and the Chicago river, into the lake. The report of this committee suggested the idea which de-veloped into the law of 1889, creating the sanitary district andproviding for the drainage channel. _ In 1886 and 1887, the legislature passed bills for providingan adequate system of drainage for the city. Then came theorganization of the sanitary district, October 14, 1889 theboundaries were fixed by a commission, and or,l B ovember 5thwere submitted to the people. The vote was : 70,958
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
