Drainage SOlutions

Water collects where the ground surface is lower than surrounding areas, or where soil compaction prevents absorption. Lowcountry soils often have clay layers that hold water near the surface, so grading adjustments and ditches are necessary to move runoff laterally instead of relying on infiltration.

Ditches are cut along the path water naturally follows during rain, typically at property edges, alongside driveways, or where runoff converges from higher ground. The ditch grade must slope continuously toward an outlet, with no low spots where water can sit and stagnate.

Culvert size depends on the volume of water crossing the driveway during heavy rain, which is estimated based on the drainage area feeding that point. Undersized culverts cause water to back up and overflow the road, leading to washouts, so proper sizing is critical in Saint George where sudden downpours are common.

Yes, most driveway washouts result from inadequate drainage—either water flowing down the lane instead of off to the sides, or runoff crossing without a culvert to channel it safely underneath. Fixing these issues prevents future erosion and keeps the driveway intact during storms.

Drainage improvements are immediately visible during the next rain event. Water that previously sat in puddles will flow into ditches and off the property, and areas that stayed muddy for days will dry faster. Long-term erosion control becomes apparent over multiple storm cycles as runoff stops carving new channels.