software · Global

openswmm.engine

Dynamic hydrology-hydraulic water quality simulation model for stormwater, wastewater, and combined sewer collection systems

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Data offered docs-verified: stormwater hydrology (runoff and infiltration) · hydraulic routing (dynamic wave, explicit finite-volume 1D, 1D/2D coupled overland flow) · water quality transport and treatment · two-zone subcatchment groundwater · RDII (rainfall-derived inflow and infiltration) · full SWMM 5.x LID controls · runtime climate forcing and per-subcatchment PET · pumps, orifices, weirs and HEC-22 inlets
Coverage llm-inferred: Global (ENTRY metadata only; not stated in DOCS)
Formats docs-verified: SWMM .inp input · GeoPackage (.gpkg, optional) · GeoJSON (model generation input) · binary output files · NumPy arrays (Python) · C API (C/C++) · Python package (PyPI)
Access docs-verified: Free and open source; licence MIT per DOCS badge (ENTRY lists 'Other', so verify before reuse); no authentication

Use cases llm-inferred: Build a drainage or sewer network model from GIS/GeoJSON data with ModelBuilder for a drainage strategy · Assess surcharge and flooding in combined sewer systems for capacity checks · Compare LID and SuDS treatment-train scenarios for pollutant load and runoff volume · Run hot-start forecasts and scenario comparisons for operational sewer networks
Audience llm-inferred: drainage engineers · flood consultants · hydrologists · water quality modellers · Python developers and GIS analysts

Constraints llm-inferred: Several capabilities are roadmap work plans, not shipped: spatially explicit groundwater, multispecies LARD water quality, heat transport, LID as storage nodes; spatially explicit inlets are in development · Licence conflict: ENTRY says 'Other', DOCS badge says MIT · GPU/threaded 2D backends ship as separately loaded plugins, not in the base build · v6.0.0 is new; SWMM 5 models need migration per the Python docs · DOCS do not mention UK-specific parameters, units or design standards; UK applicability is unverified · Software library, not a hosted service or MCP server; C/C++ requires building from source with vcpkg/CMake

Auto-extracted, unverified fields: tools, install, auth. Check upstream documentation.

Verified via GitHub API (2026-10-15). Tools/install/auth auto-extracted from README.

Metadata observed 14/10/2026 · research sweep: manual-2026-10-15 (hydrocouple.org)