Thank you for the opportunity to help you with your question!
I think if there is flood risks in our area it may be due to heavy rains and melting snow.
Spring brings warmer temperatures and heavy rain. But until the ground thaws, melting snow and rain cannot be absorbed. The water can result in the overflow of streams, rivers, and lakes that flood nearby homes and businesses.
Rivers and streams that froze during the winter also begin to thaw. As the ice breaks and travels downstream, ice jams can block the flow of water, creating flooding upstream. Add spring rain to the mix, and the result can be serious, widespread flooding.
Chicago, where older sewer systems carry sewage and rain water in the same pipes, are at greater risk for sewage spills. During heavy rains, these pipes cannot handle the volume of stormwater and wastewater, and untreated sewage is often discharged into local waters where people swim and play.
As rains become heavier, streams, rivers, and lakes can overflow, increasing the risk of water-borne pathogens flowing into drinking water sources. Downpours can also damage critical infrastructure like sewer and solid waste systems, triggering sewage overflows that can spread into local waters.
Please let me know if you need any clarification. I'm always happy to answer your questions.