Infiltration trench as compensatory technique for urban stormwater management

Abstract The aim of this paper is to present an experimental project of an installed infiltration trench in Recife/PE in the first months of life. Storage functions within the system were evaluated through the monitoring of the water levels and infiltration function, watching for the downward movement behavior level, recession. Because of the consequent events of precipitation, the trench was very requested, not having supplied, in some cases, the large volume of entry, which generated a leakage in the structure. A cost analysis was implemented and evaluated the performance and the cost of construction for the return times (2, 5, 10 and 25 years) and project rainfall durations (10, 15, 60 and 120 min). Despite the storage layer was undersizing, the infiltration trench showed positive results, and found a minimum capacity of infiltrating 63.57% of the input volumes, presenting itself as a compensatory technique in the management of urban rainwater.