In 2011, a residential yard in Grosse Pointe Park, MI, was flooded constantly with rain. This backyard is at the lowest point in the surrounding area. The ground would remain saturated after rainfall and not completely dry for weeks.
The homeowner had to pump out rainfall from the backyard several times each year, for 11 years.
Since September 2011, no water has accumulated after rainfall, even after substantial rain events. PDF Version Here!