It is part of the Flat Rock Park maintained by Lower Merion Township, Montgomery County, Pennsylvania, and is located off the Schuylkill Expressway in Gladwyne.

[1] The dam is part of a series of locks and waterway built by the Schuylkill Navigation Company between Port Carbon and Philadelphia in order to carry upstate coal to markets in the city.

It created a pool for the canal boats above it and brought water to the Manayunk Reach.

[2] The Schuylkill River flows through the dam at a rate of roughly 2540 CFS.

[3] A future hydroelectric project plans to place turbines to generate 1.5 MW of electricity.