National Dam Inspection Program. Mud Run Dam (NDI Number PA-00690, DER Number 54-27), Delaware River Basin, Mud Run, Schuylkill County, Pennsylvania. Phase I Inspection Report.
BERGER ASSOCIATES INC HARRISBURG PA
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The Mud Run Dam was designed and constructed in 1879 by the Philadelphia and Reading Coal and Iron Company. It was described in a 1914 report as an earthfill structure 1,124 feet in length. Very little information could be obtained as to the original construction. It was reported that the ground surface was well plowed to form a good bond with the fill and that the material, which was a mixture of clay and disintegrated conglomerate, was laid in layers and rolled. The dam was practically rebuilt in 1903 by adding to the then existing structure. The centerline was moved 16 feet downstream and the dam crest was increased from 8 feet to 24 feet in width and raised five feet in elevation. The downstream slope was changed from 1-12H to 1V to 2H to 1V and both slopes were paved with riprap. The material used in the enlargement was clay and disintegrated conglomerate which was laid in layers from 6 inches to 8 inches and rolled. A concrete core wall five feet wide on top and ten feet wide at the bottom was carried through a previous layer of underlying sand and gravel.
- Civil Engineering