The exact page text, read by your browser's voice.
AUDIT ROW #432 · MOMENCE LEDGE — CUT 1893, BOULDERS REMOVED 1927 · SECOND-DAM NEGATIVE
The works on this river are drainage works, and the reach's one structure of record is the Momence ledge: the rock ledge at Momence, Illinois, cut in 1893 and cleared of boulders in 1927, the choke point whose opening let the Indiana marsh drain.A second dam on the reach touching this ground — a milldam raised to a structure of record — does not stand in the records reached, and the negative is printed with the restatement. The item closes mixed: the reach's works told whole at their size; any township milldam below history-book strength rides the surveyor's and the histories' settler class.
Principal sources: The Land (the ledge cut of 1893; the boulder removal of 1927), restated as works; the basin report (article 1) for the ledge's function.