This table classifies common models by type of model.

Link to this table.

Model or tool Input complexity Simulation type(s) Public domain Unsteady flow Type of water quality model Built-in BMPs Assess TP Assess TSS Assess volume Comment on use
TR-55 Low Event Yes None No No Replaced by WinTR-55
Rational method (equation) Low Event Yes None No No
HEC-1 Medium Yes None Replaced by HEC-HMS
HEC-HMS Medium Yes None No No
Win TR-55 (or TR-20 DOS version) Medium Event or continuous Yes None No No
Win TR-55 Low Event Yes None No No
HydroCAD Medium Event No Detention ponds and storage chambers Yes Yes No
HEC-RAS
HEC-2
WSPRO
CulvertMaster
Flow Master
PondPack
EPA SWMM
PC SWMM
Info SWMM
XPS SWMM
MIKE URBAN (SWMM or MOUSE)
ICPR
InfoWorks ICM
Mike 11
CivilStorm
MODRET
WINSLAMM
P8
BASINS
QUAL2E/QUAL2K
WinHSPF
LSPC
SWAT
PLOAD
PondNet
WASP
WMM
WARMF
SHSAM
Virginia Runoff Reduction Method
MapShed
MIDS calculator
EPA National Stormwater Calculator
SELECT
Metropolitan Council Stormwater Reuse Guide Excel Spreadsheet
MCWD/MWMO Stormwater Reuse Calculator
North Carolina State University Rainwater Harvesting Model
i-Tree Streets
i-Tree Hydro
RECARGA
SELDM
MIDUSS
QHM
WWHM
HY8
Hydraulic Toolbox
SMS
GWLF-E
EPD-RIV1
CE-QUAL-RIV2
CE-QUAL-W2