36.08' - Elevation of the Pickett Avenue Bridge floor on southern end. Northern end of bridge is under water.<br><br>33.32' - Height of the bottom of Pickett Avenue Bridge floor support beam on southern end. Northern end of bridge is under water.<br><br>26.2' - River stage sensor operating limit<br><br>22.78' - Elevation of Pickett Avenue Bridge...State Route 600...bridge floor on northern end of bridge.<br><br>18.86' - Height of the bottom of the bridge support beam on northern end of Pickett Avenue Bridge...State Route 600.<br><br>17' - Near flood of record. Residential areas flooded.<br><br>15' - Major flooding begins. Secondary roads begin to flood. Some residential areas are threatened.<br><br>13' - Moderate flooding begins. Portions of Old Town Petersburg begin to flood.<br><br>10' - Minor flooding begins. Canal begins to overflow along the right bank.<br><br>