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Work and APC was financially supported by subvention of particular scientific units. For
elaboration of paper also contributed the support under the Operational Program Research and Inno-
vation for the project: Research on the impact of biotic and abiotic factors on soil-water-atmosphere-
plant cover components, 313011T620, co-financed by the European Regional Development Fund,
13-GASPU-2021 “Blue-green infrastructure as a basis for climate adaptation of land management in
agricultural and urbanized land”
Modelling of stormwater networks and the related object (combined sewer overflows,
diversion chambers, retention tanks) is a complex task requiring colleting of data with appropriate
time and spatial resolution as well as application of adequate models. Often there is a need to find
balance between the costs of conducting measurement (period, resolution) and the uncertainty of the
model results. This paper presents an overview of simulation tools for sewerage networks modelling,
related objects, as well as low-impact development (LID) systems in relation to the hydrodynamic
and statistical models. Consecutive stages of data collection, sources of data uncertainty, limitations
resulting from the adopted measurement methodology, as well as their influence on the simulation
results and possible decision-making using the developed hydrodynamic or statistical model, are
discussed. Attention is drawn to the optimization methods enabling reduction in the uncertainty of
statistical models. The methods enabling the analysis of model uncertainty, as well as evaluation of
its influence on the calculation results pertaining to stormwater hydrographs, retention tank capacity
and combined sewers overflows, are also discussed. This is a very important aspect in terms of
optimizing construction works in the sewerage network and designing their appropriate dimensions
to achieve the assumed hydraulic effects.
