Evaluation of the Influence of Catchment Parameters on the Required Size of a Stormwater Infiltration Facility

Abstract

One sustainable method of stormwater management is surface infiltration with retention. Proper design of stormwater infiltration facilities ensures a reduction in flood risk within urban catchments. However, this is not possible without considering the key design parameters of such facilities. The aim of this paper is to determine the influence of the parameters characterizing the catchment area on the size of the stormwater infiltration facilities. The research used SWMM 5.1 and Statistica software. It was carried out on the example of model catchments and a real urban catchment. The analysis showed that it is of key importance in the design of stormwater infiltration facilities to accurately determine the total catchment area, the type of soil within it, and the proportion of impervious surfaces. The relevance of the other parameters that characterize the catchment area is clearly lesser. However, they cannot be completely ignored, and their values should be determined as accurately as possible. These research results can guide stakeholders in the decision-making process during investment planning and implementation.

A New Method for Selecting the Geometry of Systems for Surface Infiltration of Stormwater with Retention

“…This study was conducted according to the procedure shown in Figure 1. As in the previous stage of the analysis [35], the required area of the stormwater infiltration facility was determined using SWMM 5.1 software (EPA SWMM, Cincinnati, Ohio, USA). The development of the research plan was made possible by using Statistica software (TIBCO Statistica, Palo Alto, CA, USA).…”

“…Previous studies by the authors [35] showed that the total catchment area (A c ), the type of soil within it, and the percent of impervious area (C) are of key importance in the design process of stormwater infiltration facilities. On the other hand, the importance of the other parameters considered in the analysis, such as the depth of depression storage (h d ), length of the system (L d ), average slope of the catchment surface (i s ), catchment load (L c ), average slope of the conduits' bottom (i c ), catchment roughness coefficient (n c ), or number of subcatchments (n s ), is significantly lower.…”

“…In the case of Poland, the required capacity of the infiltration basins and tanks is often determined on the basis of the total catchment area and the percentage of the impervious area. However, an earlier study by the authors [35] showed that one of the key parameters in the process of dimensioning stormwater infiltration facilities is the type of soil within the catchment area, which is usually not taken into account. Furthermore, when designing infiltration basins and tanks, the moisture content of the soil within the facility should be considered, which is currently neglected.…”

New Bioretention Drainage Channel as One of the Low-Impact Development Solutions: A Case Study from Poland

“…The filtration layer prevents substrate particles from entering the drainage layer. The bottom of the filter-insert is also lined with a filter layer (15), in the form of a non-woven fabric, whose task is to prevent the drainage layer particles from penetrating through the flow holes.…”

“…LID refers to techniques and principles that aim to reduce stormwater runoff into sewers, recharge groundwater, increase infiltration, and protect rivers and watercourses. Achieving these goals enables the use of solutions such as retention reservoirs [12,13], infiltration facilities and devices [14,15], and rainwater-harvesting systems [16,17].…”