ID#: 8508
Caption:
The young carp shown swimming in this historic 1936 photograph, were displaying signs of oxygen hunger by gulping air through the lake surface interface. The picture was taken at Lake Merion, near Brownton, Minnesota on February 3 of that year. Note the ice, comingled with surface debris, adding to the negative effects caused by the infusion of water pollutants, which caused the oxygen level in the water to dramatically decline. This is one of a series of instructional images used by the Minnesota Board of Health, used to train its public health workers. The focus of the images and the training, was on protecting water supplies from bacterial contamination, due to incorrect disposal of waste, including sewage that might foul ground water, rivers, lakes, and streams.
High Resolution: Click here for hi-resolution image (11.89 MB)
Content Provider(s): CDC/ Minnesota Department of Health, R.N. Barr Library; Librarians Melissa Rethlefsen and Marie Jones
Creation Date: 1936
Photo Credit:
Links: Minnesota Health Department
Minnesota Health Department; R.N. Barr Library
Categories:
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Copyright Restrictions: None - This image is in the public domain and thus free of any copyright restrictions.