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1. 1729-SWMM5-Models 1729-SWMM5-Models Public

   1,729 OWA SWMM5 test models covering LID, routing, and user networks. Built during the February 2026 Fixathon.

   Batchfile 11 5

2. SWMM_MD_Documents SWMM_MD_Documents Public

   The SWMM4 User's Manual (Huber, Dickinson, Barnwell, Branch, 1988) converted to Markdown. 850+ citations. Now searchable and forkable

   Fortran 2 1

3. WCH_2004_SWMM44H WCH_2004_SWMM44H Public

   WCH_2004_SWMM44H → "EPA SWMM 4.4H Fortran source code. Wayne Huber's 2004 reference build, preserved for the historical record.

   Fortran 1

4. swmmr swmmr Public

   Forked from dleutnant/swmmr

   R Interface for US EPA's SWMM

   R

5. pyswmm pyswmm Public

   Forked from pyswmm/pyswmm

   Python Wrappers for SWMM

   Python 1

6. SWMM5plus SWMM5plus Public

   Forked from CIMM-ORG/SWMM5plus

   Prototype Fortran 2008 engine for the EPA Storm Water Management Model (SWMM)

   Fortran