National Dam Safety Program. J. Bristow Lake Dam (MO 30985), Mississippi - Kaskaskia - St. Louis River Basin, Crawford County, Missouri. Phase I Inspection Report

This report presents the results of field inspection and evaluation of the J. Bristow Lake Dam (MO 30985). This dam has been classified as unsafe, non-emergency by the St. Louis District as a result of the application of the following criteria: (a) Spillway will not pass 50 percent of the Probable Maximum Flood without overtopping the dam; (b) Overtopping of the dam could result in failure of the dam; and (c) Dam failure significantly increases the hazard to loss of life downstream. Prepared in cooperation with Hanson Engineers, Inc., Springfield, IL.