USGS OFR 03-346
Online only
Version 1.0

Figure 8

Figure 8a. Area exhibiting turbid waters in the fall of the year when there had been no runoff of sediment-rich waters into the rivers. The turbidity results primarily from iron oxyhydroxide floc due to precipitation of ferric compounds as ferrous-rich ground water emerges as river base flow.

Figure 8b. Turbid base flow discharge of Nassawango Creek during extended period of near record low flow (July-September, 1999). Turbidity in Creek is suspended floccules of iron oxyhydroxide.