29.6' - The water begins to overtop the protective levee.<br><br>24' - Water begins to flow over the lock walls and the protective earthen dikes.<br><br>23.65' - Water levels reach the flood of record.<br><br>21' - Flooding of some residential areas occurs. Lock and Dam 10 is closed to navigation.<br><br>20' - Some basements may begin to experience flooding due to seepage, with most problems occurring on the approaches to town.<br><br>19' - The water is over Island Road.<br><br>18' - Sewer and street flooding begins to occur in Glen Haven, Wisconsin.<br><br>15.5' - The water is over Marina Road.<br><br>15' - Minor lowland flooding begins to occur.<br><br>