18 feet - Official Flood Stage. Low lying service roads adjacent to the Shenandoah begin to inundate due to backwater effects. 19.5 feet - Water reaches Bruce and Hamilton Streets. 20.5 feet - Water begins to flow through tunnel from Potomac River into the lower edge of town. Half of Market Street is flooded.
Water covers about half of the shuttle bus parking lot.
21.5 feet - Water reaches Shenandoah Street adjacent to the shuttle bus pavilion. 22.5 feet - Shenandoah Street flooded to the edge of the business district. All buildings along Shenandoah Street are flooded.