1729-SWMM5-Models

A reference library of ~3,800 EPA SWMM5 (.inp) models — hydrology, hydraulics, LID, water quality, force mains, pumps, weirs, orifices, and dynamic-wave routing, plus XPSWMM conversions and training examples. Every model is paired with an auto-generated Markdown summary.

Repository at a glance

SWMM5 input models (.inp)	~3,800
Per-model summaries (.md)	one per model
Report files (.rpt)	~2,100
Tracked files	~13,100
Repository size (.git)	~670 MB
Output files (.out)	kept on disk, not tracked (see below)

Folder breakdown

Folder	Models	Contents
XPSWMM	~1,860	Models converted from XPSWMM (.xp) to EPA SWMM5 via the XPSWMM Card Reader
SWMM5_NCIMM	~590	Core EPA SWMM5 examples and stress tests, from tiny cases to very large networks
EPA	~150	EPA SWMM5 examples, Extran-manual cases, and hydraulic-structure tests
OWA_USER	~150	Open Water Analytics user and regression examples
Hydrology	~150	Runoff/infiltration, snowmelt, RDII, and continuous-simulation models
Hydraulics	~140	Dynamic-wave routing, force mains, and structure tests
LID	~95	Low Impact Development controls (bioretention, permeable pavement, green roofs, …)
Simon_EPA	~86	Curated Session 1–81 training set
OWA_EXTRAN	~82	Open Water Analytics Extran-style hydraulic cases
NCIMM_Training	~82	NC IMM training-course models
Semi_Real_Models	~78	Semi-realistic / real-world-style networks
Training	~69	General training and course examples
OWA_ROUTING	~45	OWA routing regression cases
NCIMM_ROUTING	~30	NCIMM routing analyses
LEW_update_v5113 / LEW_update_v5115	~27 / ~11	Version-specific regression sets (SWMM 5.1.013 / 5.1.015)
SWMM5_1_014_Bug_Examples	~24	Cases reproducing SWMM 5.1.014 issues
LEW_CHI_SWMM5.2	~23	LEW / CHI SWMM5.2 test cases
Weirs / Orifices / Pumps	~23 / ~18 / ~12	Hydraulic-structure test models
z1000Years	~9	Long continuous (1,000-year) simulations
WQ	~9	Water-quality / pollutant-routing models
OWA_update_v5111	~8	OWA SWMM 5.1.011 regression set
VRough_Tests / VRough_Tests_EPA	~3	Variable Manning's-roughness tests
Greenville, Matt_Anderson_Teams, Sam, logan, Special, AD_SSF, 15100, RED_Files, Test_Interface_Files	misc	Named, contributed, and special-case models
DataFiles	—	Shared rainfall and external data files (.dat, .rff, …) referenced by the models

Counts are approximate; the XPSWMM set dominates the file total.

Per-model Markdown summaries

Every <model>.inp has a matching <model>.md beside it — a one-page summary you can read on GitHub without opening SWMM. Each summary includes:

• Badges — flow units, routing method, infiltration method, and node / link / subcatchment counts
• Run status — a colored callout pulled from the model's .rpt (clean / warnings / errors, with continuity error)
• Configuration — flow units, infiltration, routing, simulation window, and time steps
• Inventory — junctions, outfalls, storage, conduits, pumps, orifices, weirs, outlets, plus subcatchment count and total area
• LID, water quality, controls, and forcing sections, shown only when the model uses them

The summaries are generated directly from each .inp (and its sibling .rpt), so they stay in step with the models.

Output files (.out) are not tracked

SWMM5 binary results files (*.out, roughly 8.8 GB across the library) are git-ignored. They stay on disk for immediate use but are kept out of version control so the repository stays small — .git is ~670 MB instead of several GB. Hot-start interface files (*.hsf) are excluded for the same reason. See .gitignore.

To recreate any .out, re-run its model in EPA SWMM 5.2.

Running a model

Open any .inp in EPA SWMM 5.2, or run it from the command line:

runswmm.exe  model.inp  model.rpt  model.out

runswmm.bat in the repository root wraps this for batch runs.

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EPA SWMM5 model library maintained by Robert (Bob) Dickinson.

License and provenance

This repository is dedicated to the public domain under The Unlicense (see LICENSE), matching EPA SWMM5's own public-domain status. Most models here are EPA public-domain examples, Open Water Analytics regression and example models, or Bob's own XPSWMM-to-SWMM5 conversions. A handful of folders, including Greenville, Matt_Anderson_Teams, Sam, logan, and Special, are contributed or special-case models from colleagues and students; confirm provenance before assuming the same public-domain terms apply if you plan to redistribute those specifically.