National Dam Inspection Program. Wilson Creek Dam (NDI-PA 00318, PA DER 52-154, SCS PA-440), Delaware River Basin, Wilson Creek, Pike County, Pennsylvania. Phase I Inspection Report.

摘要

Wilson Creek Dam is a zoned earth embankment with a foundation cutoff trench. The cut-off trench has a base width of 12 feet and extends into the foundation. The cut-off trench is backfilled with a zone of silty sand and silt of low permeability. The central core of the dam is composed of silty sand and silt to an elevation 9.5 feet below the top of the dam. The remainder of the dam is a pervious zone of silty gravel. The earth embankment has side slopes of 3 horizontal to 1 vertical (3H:1V) on the upstream side and 2H:1V on the downstream side. Berms exist on the upstream and downstream slopes of the dam. The berm on the upstream side is 8 feet wide and slopes towards the reservoir on a 12.5 percent grade; its lowest elevation is at the normal pool 1708.4. The berm on the downstream slope is 36 feet wide and slopes downstream on a 1.4 percent grade. This berm is used as a roadway with its lowest elevation at 1710.(Author)