Ackerly Creek, Lackawanna County, Pennsylvania – The water quality
monitoring sonde (YSI 6920 or YSI 6600) is located in the stream at
the bottom right of the photograph. The view is looking upstream. Students
are installing stream-bed piezometers for measuring stream-bed hydraulic
conductivity and hydraulic head. Well no. 5 is located on the flood
plain, 108 feet from the stream bank on the right side of the photograph.