Cover: A sediment plume in the lower portion of Sandusky Bay, the result of a major storm in the Sandusky River watershed in June 1981. The Marblehead Peninsula is at middle top, and the Portage River plume is above it. Part of Sandusky, OH, is at the bottom of the picture. This illustrates the juxtaposition of rural and urban sources of pollution, as well as the interface between the lake and tributary environments. See Richards et al., "The Lake Erie Agricultural Systems for Environmental Quality Project: An Introduction," p. 6-16. Photo by Phil Kline.