|
BC
|
Inflows
|
Specifies external hydrographs and pollutographs that enter the drainage system at specific nodes.
|
Point
|
Table L.2
|
|
Curves
|
Curves
|
Describes a relationship between two variables in tabular format.
|
No Geometry
|
Table L.3
|
|
Curves
|
Timeseries
|
Describes how a quantity varies over time.
|
No Geometry
|
Table L.4
|
|
Groundwater
|
Aquifers
|
Supplies parameters for each unconfined groundwater aquifer in the study area. Aquifers consist of two
zones – a lower saturated zone and an upper unsaturated zone with a moving boundary between the
two.
|
No Geometry
|
Table L.5
|
|
Groundwater
|
Groundwater
|
Supplies parameters that determine the rate of groundwater flow between the aquifer underneath a
subcatchment and a node of the conveyance system.
|
Region
|
Table L.6
|
|
Groundwater
|
GWF
|
Defines custom groundwater flow equations for specific subcatchments.
|
Region
|
Table L.7
|
|
Hydrology
|
Adjustments
|
Specifies optional monthly adjustments to be made to temperature, evaporation rate, rainfall intensity
and hydraulic conductivity in each time period of a simulation.
|
No Geometry
|
Table L.8
|
|
Hydrology
|
Evaporation
|
Specifies how daily potential evaporation rates vary with time for the study area.
|
No Geometry
|
Table L.9
|
|
Hydrology
|
Hydrographs
|
Specifies the shapes of the triangular unit hydrographs that determine the amount of rainfall-dependent infiltration/inflow (RDII) entering the drainage system.
|
No Geometry
|
Table L.10
|
|
Hydrology
|
Patterns
|
Specifies time patterns of dry weather flow or quality in the form of adjustment factors applied as multipliers to baseline values.
|
No Geometry
|
Table L.11
|
|
Hydrology
|
Raingages
|
Identifies each rain gage that provides rainfall data for the study area.
|
No Geometry
|
Table L.12
|
|
Hydrology
|
RDII
|
Specifies the parameters that describe rainfall-dependent infiltration/inflow (RDII) entering the drainage system at specific nodes.
|
Point
|
Table L.13
|
|
Hydrology
|
Snowpacks
|
Specifies parameters that govern how snowfall accumulates and melts on the plowable, impervious and pervious surfaces of subcatchments.
|
No Geometry
|
Table L.14
|
|
Hydrology
|
Temperature
|
Specifies daily air temperatures, monthly wind speed, and various snowmelt parameters for the study area. Required only when snowmelt is being modeled or when evaporation rates are computed from daily temperatures or are read from an external climate file.
|
No Geometry
|
Table L.15
|
|
Inlets
|
Inlet Usage
|
Assigns inlet structures to specific street and open channel conduits.
|
Point
|
Table L.16
|
|
Inlets
|
Inlets
|
Defines inlet structure designs used to capture street and channel flow that are sent to below ground sewers.
|
No Geometry
|
Table L.17
|
|
LID
|
Lid_controls
|
Defines scale-independent LID controls that can be deployed within subcatchments.
|
No Geometry
|
Table L.18
|
|
LID
|
Lid_usage
|
Deploys LID controls within specific subcatchment areas.
|
Region
|
Table L.19
|
|
Links
|
Conduits
|
Identifies each conduit link of the drainage system. Conduits are pipes or channels that convey water from one node to another.
|
Line
|
Table L.20
|
|
Links
|
Controls
|
Determines how pumps and regulators will be adjusted based on simulation time or conditions at specific nodes and links.
|
No Geometry
|
Table L.21
|
|
Links
|
Losses
|
Specifies minor head loss coefficients, flap gates, and seepage rates for conduits.
|
Line
|
Contained within Table L.20
|
|
Links
|
Orifices
|
Identifies each orifice link of the drainage system. An orifice link serves to limit the flow exiting a node
and is often used to model flow diversions and storage node outlets.
|
Line
|
Table L.22
|
|
Links
|
Outlets
|
Identifies each outlet flow control device of the drainage system. These are devices used to model
outflows from storage units or flow diversions that have a user-defined
relationship between flow rate and
water depth.
|
Line
|
Table L.23
|
|
Links
|
Pumps
|
Identifies each pump link of the drainage system.
|
Line
|
Table L.24
|
|
Links
|
Streets
|
Describes the cross-section geometry of conduits that represent streets.
|
No Geometry
|
Table L.25
|
|
Links
|
Transects
|
Describes the cross-section geometry of natural channels or conduits with irregular shapes following the HEC-2 data format.
|
No Geometry
|
Table L.26 and Table L.27
|
|
Links
|
Weirs
|
Identifies each weir link of the drainage system. Weirs are used to model flow diversions and storage
node outlets.
|
Line
|
Table L.28
|
|
Links
|
Xsections
|
Provides cross-section
geometric data for conduit and regulator links of the drainage system.
|
Line
|
Contained within Table L.20, Table L.22 and Table L.28.
|
|
Nodes
|
Dividers
|
Identifies each flow divider node of the drainage system. Flow dividers are junctions with exactly two outflow conduits where the total outflow is divided between the two in a prescribed manner.
|
Point
|
Table L.29
|
|
Nodes
|
DWF
|
Specifies dry weather flow and its quality entering the drainage system at specific nodes.
|
No Geometry
|
Table L.30
|
|
Nodes
|
Junctions
|
Identifies each junction node of the drainage system. Junctions are points in space where channels and pipes connect together. For sewer systems they can be either connection fittings or manholes.
|
Point
|
Table L.31
|
|
Nodes
|
Outfalls
|
Identifies each outfall node (i.e., final downstream boundary) of the drainage system and the corresponding water stage elevation. Only one link can be incident on an outfall node.
|
Point
|
Table L.32
|
|
Nodes
|
Storage
|
Identifies each storage node of the drainage system. Storage nodes can have any shape as specified by a surface area versus water depth relation.
|
Point
|
Table L.33
|
|
Project
|
Files
|
Identifies optional interface files used or saved by a run.
|
No Geometry
|
Table L.34
|
|
Project
|
Options
|
Provides values for various analysis options.
|
No Geometry
|
Table L.35
|
|
Project
|
Report
|
Describes the contents of the report file that SWMM produces.
|
No Geometry
|
Table L.36
|
|
Project
|
Title
|
Attaches a descriptive title to the project being analyzed.
|
No Geometry
|
Table L.37
|
|
Hydrology
|
Infiltration
|
Supplies infiltration parameters for each subcatchment. Rainfall lost to infiltration only occurs over the
pervious subarea
of a subcatchment.
|
Region
|
Contained within Table L.38
|
|
Hydrology
|
Subareas
|
Supplies information about pervious and impervious areas for each subcatchment. Each subcatchment
can consist of a pervious subarea,
an impervious subarea
with depression storage, and an impervious
subarea
without depression storage.
|
Region
|
Contained within Table L.38
|
|
Hydrology
|
Subcatchments
|
Identifies each subcatchment within the study area. Subcatchments are land area units that generate
runoff from rainfall.
|
Region
|
Table L.38
|
|
WQ
|
Buildup
|
Specifies the rate that pollutants build up over different land uses between rain events.
|
No Geometry
|
Table L.39
|
|
WQ
|
Coverages
|
Specifies the percentage of a subcatchment’s area that is covered by each category of land use.
|
Region
|
Table L.40
|
|
WQ
|
Landuses
|
Identifies the various categories of land uses within the drainage area. Each subcatchment area can be assigned a different mix of land uses. Each land use can be subjected to a different street sweeping schedule. Land uses are only used in conjunction with pollutant buildup and wash off.
|
No Geometry
|
Table L.41
|
|
WQ
|
Loadings
|
Specifies the pollutant buildup that exists on each subcatchment at the start of a simulation.
|
Region
|
Table L.42
|
|
WQ
|
Pollutants
|
Identifies the pollutants being analyzed.
|
No Geometry
|
Table L.43
|
|
WQ
|
Treatment
|
Specifies the degree of treatment received by pollutants at specific nodes of the drainage system.
|
Point
|
Table L.44
|
|
WQ
|
Washoff
|
Specifies the rate at which pollutants are washed off from different land uses during rain events.
|
No Geometry
|
Table L.45
|