EPA SWMM Tools, Wrappers & Interfaces

Storm and foul water drainage design and 1D hydraulic modelling software for UK and Irish civil engineers.

EPA's toolbox for sanitary sewer overflow planning — RDII analysis with the SWMM engine underneath.

The public-domain engine of urban drainage: dynamic-wave pipe networks, runoff, LID and water quality.

Build and read EPA SWMM models as QGIS layers — free GIS-based SWMM model construction.

Browser-based urban stormwater and drainage modeling powered by OpenSWMM 6 compiled to WebAssembly.

MATLAB (and Python/LabVIEW) co-simulation with SWMM — built for real-time control research.

CDM Smith's free rainfall statistics and STORM-method screening model — IDF analysis, disaggregation, CSO planning.

CHI's commercial GIS front-end for SWMM — the most direct productivity upgrade for serious SWMM users.

Python interface to the SWMM engine — step through simulations, read state, and control gates in real time.

EPA's Climate Adjustment Tool for SWMM — apply downscaled climate projections to rainfall and evaporation inputs.

Free web tool for building synthetic design-storm patterns — 560+ temporal patterns, exportable to SWMM and HMS.

Benchmark scenarios for smart-stormwater control — test real-time control algorithms on curated SWMM systems.

Pure-Python reading, editing and running of SWMM INP, RPT and OUT files — the full file-format toolkit.

Pandas-powered reading, editing and version-diffing of SWMM models — the model-management side of the stack.

Run and read EPA SWMM from R — model execution, results import and GIS conversion on CRAN.

Python CLI and library for extracting time series from SWMM binary output files.