Indianapolis, Indiana


City of Indianapolis Department of Public Works

Lochgroup designed a hybrid ditch as a stormwater drainage system for a neighborhood that is very flat and prone to stormwater ponding and minor flooding. A traditional storm sewer would have been difficult to design and construct because of the existing side ditch infrastructure and flat topography.

A challenging aspect was to maintain the existing parking for the residents while creating areas for surface water infiltration. Design included hybrid ditches, which allow stormwater to seep through soil, sand, and stone layer to a perforated pipe. Parking areas are outlined in permeable parking pavers and then filled with open graded stone.

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