 In spite of the dam the Susquehanna is often just a few feet deep at Harrisburg, and it is possible (although not necessarily advisable) to walk from one shore to the other—a distance of nearly a mile—while keeping one's head well above water.Proposals have been made to raise the height of the dam in order to enhance the river’s navigability and recreational potential, although the suggestion remains controversial.The present structure has been criticized as creating currents downstream that can draw small boats upstream into the dam, an effect that has been cited in at least seventeen drownings.