National Dam Safety Program. Lake Boutin Dam (MO 40008), Mississippi - Kaskaskia - St. Louis River Basin, Cape Girardeau County, Missouri. Phase I Inspection Report.

Lake Boutin Dam is an earthfill structure approximately 45.5 feet high and 674 feet long at the crest. The dam has no drawdown facilities and the spillway is a trapezoidal channel cut into natural ground at the left abutment. Our inspection and hydrologic and hydraulic analyses indicate that the spillway capacity of the dam does not meet the criteria set forth in the guidelines for a dam having the above size and hazard potential. The dam will hold and pass approximately 50 percent of the Probable Maximum Flood PMF without overtopping. The overall condition of the dam appeared to be poor and several deficiencies were noted during the inspection.