Flood control measures. Provides that immediate action may be taken for the maintenance, alteration, repair, reconstruction, change in construction or location, or removal of a dike, floodwall, levee, or appurtenance to provide emergency protection to: (1) human life; or (2) property; if, in the opinion of the department of natural resources (DNR), there is not sufficient time for the maintenance, alteration, repair, reconstruction, change in construction or location, or removal to be effected through the issuance and enforcement of a notice of violation. (Under current law, danger to property alone is not sufficient cause for immediate action.) Provides that if, in the opinion of the DNR, immediate action is necessary, the DNR may: (1) undertake the action by itself or through a contractor engaged by the DNR; or (2) authorize the owner of the property on which the dike, floodwall, levee, or appurtenance is located to undertake the action. Provides that, before the natural resources commission or its agents may enter private property to investigate for flood control purposes, the owner or occupant of the property must be contacted and informed of the reason for the entry and the intended time and place of the entry by: (1) direct, in person verbal communication; (2) a telephone call; (3) certified mail with return receipt requested; or (4) first class mail or electronic mail followed by a response from the owner or occupant of the property; except when there is a need to enter the property immediately because of an emergency.