Sirak Bahta, a city engineer, explains to Brig. Gen. Thomas W. Kula how the three new pumps work. Together they can pump 375,000 gallons per minute out of West Dallas neighborhoods – the equivalent of being able to fill an Olympic-sized swimming pool in less than two minutes. Total Flood Control System pumping capacity for all of the city’s pumping stations is the equivalent of filling up White Rock Lake from scratch in a single day.