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ST. LOUIS, MO (KTVI) – The heavy rain heading our way is raising major concerns about flooding. Th Metropolitan Sewer District is doing its best to stay ahead of the storm.

MSD crews have been clearing debris out of drains and sewers to help prevent street flooding and other backups.

That is a big job. MSD has more than 160,000 street inlets and almost 10,000 miles of sewers to maintain. MSD spokesperson Lance LeComb said the amount of rain being forecast could very well overwhelm the sewer and drainage systems.

LeComb believes there will be basement backups and some localized flooding. He is particularly concerned about a potential situation where a heavy rain cell could basically just stay in one area for a time leading to flash flooding.

LeComb is encouraging residents to stay aware and make sure your drains are clear. But LeComb said the bottom line is there could simply be so much rain this weekend and that problems may be inevitable.

They’ve also taken steps to protect its Fenton Wastewater Plant.

In December 2015, flood waters from the Meramec River spilled over the levees that surround the facility. The plant was submerged in 6-feet of water and shut down.

MSD has since added bypass pumps to prevent that from happening again.

Tips for Homeowners:

· Be sure gutters are free of leaves, branches, and other blockages: Blocked gutters can cause water to cascade down the side of a structure or pond on a roof, both of which can cause rainwater to enter a home.

· Clear downspouts and make sure they are directed away from your house.: Misdirected downspouts can focus water toward a home, causing flooding within the structure or foundation damage.

· Clean window wells: Many homes have window wells outside their basement windows. Be sure these areas are free of leaves and other debris so they can drain properly and as quickly as possible. If water accumulates, it presses up against the basement window, which in turn can seep into or even flood your basement.

· Clean stairwell drains: Homes that can be entered through a basement door will have a drain at the bottom of the stairwell. Make sure this drain is not blocked and is clear of leaves and other debris. Water accumulating in a stairwell can seep in and flood your basement.

· Check sump pump drainage hoses: Water from a sump pump should drain away from the house so that it does not flow back into the basement. Many sump pumps incorrectly lead to the basement drain – the pump’s drain should lead outside. It’s a good idea to have a backup pump in case the primary pump fails.

· Clear drainage paths on your property: In many parts of our community, small creeks, streams, and other waterways provide stormwater drainage. Ensure that the path rainwater travels from your property to drain into these waterways is clear of possible blockages. Portable pools, loose recreational equipment, piles of yard debris (grass clippings, branches, etc.), and the like can block these drainage ways and stop water from draining as quickly as possible from your property. Remove these possible blockages and ensure that rainwater has an unimpeded flow to the waterway.

· Limit indoor water use: By limiting the use of dishwashers, washing machines, bathtubs, and the like during intense rainfalls, less demand will be put on the sewer system. In those parts of our service area with sewers handling both wastewater and stormwater, the ability to handle stormwater will be increased.

· Clear streets and other areas of debris: Leaves, plastic bottles, branches, and other debris can easily block inlets. When high intensity rainstorms hit, these items are washed into the inlets. Items that make it into the sewer decrease the amount of water that can be handled. Items that don’t go into the sewer block inlets, which in-turn causes street and other localized flooding.

· Keep local creeks & streams clear: Local creeks, streams, and other waterways provide stormwater drainage for many parts of our community. The vast majority of these waterways are private property. Thus, responsibility to keep these waterways maintained and clear falls on adjacent property owners or subdivisions as a whole. Ensuring that these waterways are clear of grass clippings, branches, fallen trees, and other debris will allow rainwater to be carried away as quickly as possible.