July 10, 2013

Remembering the Flood of 1993

flood of 1993 aerial view 2Twenty years ago – at 3:02 a.m. on July 11, 1993 – Des Moines Water Works shut down operations after the water treatment plant and general office were inundated with flood water.

It all began July 8, when 8-10 inches of rain fell in the upper Raccoon River watershed.  On July 9, the levee was closed.  At 1:00 a.m. on July 11, water started coming over the levee.  The Raccoon River crested at the historic level of 26.75 feet, 1.75 feet higher than the levee.

The dewatering process began along with restoration of the high voltage and high service pumps, chemical feeds, and refilling the distribution system.  The National Guard air-lifted equipment in and out of the treatment plant.  Staff worked round-the-clock.  The general office was re-located.  Seven days later, DMWW began pumping potable water from the Fleur Drive plant.  Customers could use the water for sanitary use on Day 12, and the water was safe to drink on Day 19.

The levee around the water treatment plant was heightened by 6 feet.  Permanent flood gates have been installed.  A second treatment plant, the L.D. McMullen Water Treatment Plant at Maffitt Reservoir, began operation in 2000.  A third treatment plant, the Saylorville Water Treatment Plant, went online in 2011.

DMWW was forever changed by the Flood of 1993.  The product we produce daily became even more important, and our commitment to quality and service became even stronger.  The dedicated employees, tireless volunteers, and the utility’s commitment to the community allowed us to quickly recover, restore service and rebuild to bring the community safe, reliable, high quality water now and in the future.

Posted by: Pat Ripley No Comments
Labels: , Posted in Flooding, History, Uncategorized

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