Mayfly Distribution Indicates Water Quality on the Upper Mississippi River

See allHide authors and affiliations

Science  27 Nov 1964:
Vol. 146, Issue 3648, pp. 1164-1166
DOI: 10.1126/science.146.3648.1164


Hordes of mayflies emerge during the summer months from most sections of the Upper Mississippi River, thus creating nuisance problems for shoreline residents and river traffic. The presence of these pollution-sensitive forms indicates, however, that the river is more river-like than sewer-like in a given area.