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Description:This historic 1929 photograph showed a coke plant sewer outlet into the St. Louis River at Morgan Park, Minnesota, near Duluth. A weir was installed in order to measure the water flow during the St. Louis water quality investigation survey of 1928-1929. This study, and later studies in 1948 and 1973, showed a progressive deterioration of the water quality in the river, and in nearby Spirit Lake.
This was one of a series of instructional illustrations used by the Minnesota Board of Health to train its state public health workers. The purpose of the images and the accompanying training was focused on protecting water supplies from bacterial contamination due to the discharge of industrial waste.
High Resolution: Click here for hi-resolution image (10.92 MB)
Content Providers(s):CDC/ Minnesota Department of Health, R.N. Barr Library; Librarians Melissa Rethlefsen and Marie Jones
Creation Date:1929
Photo Credit:
Links:Minnesota Health Department
Minnesota Health Department; R.N. Barr Library
CDC – Nat. Center for Infectious Diseases; Water-Related Diseases
CDC Organization
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Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.