Drainage contractor in Kokomo, IN

Kokomo, specifically

Why so many Kokomo yards behave the same way

Most drainage problems come down to two questions. Where does the water land, and where can it go? In Kokomo, the second question is the hard one.

This part of Indiana is a glacial till plain. The glacier flattened it and left behind a dense, clay-rich subsoil, and then the local landscape settled into a pattern of very slight rises and very shallow depressions. Those depressions are where the Kokomo and Brookston soils formed, and both are rated poorly to very poorly drained. On a Brookston or Kokomo soil, the seasonal high water table can sit at, or even above, the ground surface. That is not a figure of speech from a marketing page. It is how the USDA describes the dirt in your back yard.

So when a homeowner off South Park Road tells us the low corner of the lawn has been soft since March, nothing unusual has happened. The water table came up, the clay under it will not let anything percolate down, and the depression that made that soil in the first place is doing exactly what it has done for ten thousand years. The difference is that there is now a house on it.

Add the rain. Kokomo takes about 44 inches a year, with June typically the wettest month, and roughly 34 inches of snow that melts into saturated spring ground. Then add the freeze and thaw cycle, which works soil loose around foundations and helps backfill settle. Twenty years after a house goes up, the ground that was graded away from the wall on day one has often gone flat, and sometimes gone the wrong way.

The housing stock matters too. Kokomo has about 29,500 housing units and a median home value of $137,400, which tells you plainly that this is not a market full of brand-new construction. It is a Rust Belt city that grew up around the Stellantis transmission and engine plants and the auto supply trade, with a lot of mid-century homes on block foundations and crawlspaces. Block is porous, mortar joints are more porous, and a wall standing in saturated clay for six weeks each spring will eventually let water through.

None of this means a Kokomo lot cannot be drained. It means the design has to respect very little fall. On a lot with two feet of drop across 150 feet, you do not get to be sloppy about pipe pitch or outlet elevation. You shoot the grade properly, you set the line to the fall you actually have, and you find a real outlet, whether that is a street-side storm inlet, a ditch, a swale between properties, or a daylight point on a low corner. The city's stormwater rules explicitly allow roof downspouts and foundation drains to discharge into the storm system, which gives us a legitimate destination on plenty of in-town lots.

What we do not do is bring a mini excavator into a Kokomo back yard to solve it. On this soil, machine tracks compact wet clay in a way that takes years to recover, and compacted clay is the original problem. We hinge the sod back with our zipper method, dig by hand, set the pipe and stone, and fold the turf into the exact spot it came from.