Project File:Channel Routing Optional
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Contents
3.7.1 Required Inputs
The following cards are REQUIRED for the simulation of channel routing.
| Card | Argument | Description |
|---|---|---|
DIFFUSIVE_WAVE |
none | Specifies explicit diffusive-wave 1-D channel routing. |
CHAN_EXPLIC |
none | Specifies explicit diffusive-wave 1-D channel routing. Performs same function as DIFFUSIVE_WAVE. |
CHANNEL_INPUT "filename.cif" |
file name | Input ASCII file containing channel network connectivity and cross-sectional information for each link/node. |
STREAM_CELL "filename.gst" |
file name | Input ASCII file containing channel/grid connectivity information. |
OUTLET_HYDRO "filename.otl" |
file name | Output ASCII file containing discharge (m3 s-1) unless QOUT_CFS flag is specified (ft3 s-1) |
SECTION_TABLE "filename.ext" |
file name | Input ASCII file containing cross-section information for irregular, break-point channel cross-sections. REQUIRED if look-up table cross-sections are specified in the CHANNEL_INPUT file. |
3.7.2 Initial Condition and Boundary Condition - Optional
| Card | Argument | Description |
|---|---|---|
EXPLIC_BACKWATER "filename.ext" |
file name | Save explicit channel routing end of run values of channel depth (m) and discharge (m3 s-1) for each cell. |
EXPLIC_HOTSTART "filename.ext" |
file name | Start explicit channel calculations using the values of channel depth and flow in the named file. |
WRITE_CHAN_HOTSTART "filename.ext" |
file name | Save explicit channel routing end of run values of channel depth (m) and discharge (m3 s-1) for each cell. |
READ_CHAN_HOTSTART "filename.ext" |
file name | Start explicit channel calculations using the values of channel depth and flow in the named file. |
OVERBANK_FLOW |
none | Allow water in channel to flow back onto overland flow plane when stream elevation is above top of bank and the adjacent overland cell elevation. |
OVERLAND_BACKWATER |
none | Include backwater effects on overland when stream water surface elevation is greater than overland flow surface elevation without allowing water in channel to flow back onto overland. |
CHAN_POINT_INPUT |
file name | Input ASCII file containing the point source input location, discharge, and concentrations. |
3.7.3 Stream Losses/Gains - Optional
3.7.3.1 General
| Card | Argument | Units | Description |
|---|---|---|---|
STREAM_LOSS |
none | none | Card is used to specify that stream losses be computed when the WATER_TABLE card is not included in the project file. |
3.7.3.2 Parameters
Used with WATER_TABLE or STREAM_LOSS card. These parameters may also be distributed along the channel by assigning in the CHAN_INPUT file.
| Card | Argument | Units | Description |
|---|---|---|---|
K_RIVER ##.## |
real | cm hr-1 | Uniform hydraulic conductivity of streambed material. REQUIRES WATER_TABLE or STREAM_LOSS. May also be distributed in CHAN_INPUT file. |
M_RIVER ##.## |
real | cm | Uniform thickness of streambed material. Requires WATER_TABLE or STREAM_LOSS. May also be distributed in CHAN_INPUT file. |
3.7.4 Optional Output
| Card | Argument | Description |
|---|---|---|
IN_HYD_LOCATION "filename.ihl" |
table name | Input ASCII file specifying link/node pairs to write out time series data specified by OUT_HYD_LOCATION, OUT_DEP_LOCATION, or OUT_CON_LOCATION. |
OUT_HYD_LOCATION "filename.ohl" |
filename | Filename to output time series discharge data (m3 s-1 or ft3 s-1) at points specified in IN_HYD_LOCATION. REQUIRED if IN_HYD_LOCATION was specified. |
OUT_DEP_LOCATION "filename.odl" |
filename | Filename to output channel depths (m) every HYD_FREQ time steps at locations specified in the IN_HYD_LOCATION file. |
IN_SED_LOC "filename.isl" |
table name | Input ASCII file containing a list of internal link/node locations where the user wants to save sediment hydrographs. Format identical to IN_HYD_LOC option. REQUIRES SOIL_EROSION. |
OUT_SED_LOC "filename.osl" |
filename | Filename to output sediment flux hydrographs every HYD_FREQ time steps at internal catchment locations specified in the IN_SED_LOC file. REQUIRED if SOIL_EROSION and IN_SED_LOC card are specified. |
STRICT_JULIAN_DATE |
none | Specifies all time series data use strict Julian format. |
CHAN_DEPTH "filename.cdp" |
filename | Filename to output link/node data of channel depth (m) every MAP_FREQ time steps. |
CHAN_STAGE "filename.cds" |
filename | Filename to output link/node data of channel stage (m) every MAP_FREQ time steps. |
CHAN_DISCHARGE "filename.cdq" |
filename | Filename to output link/node data of channel discharge (m3 s-1) every MAP_FREQ time steps. |
CHAN_VELOCITY "filename.cdv" |
filename | Filename to output link/node data of channel velocity (m s-1) every MAP_FREQ time steps. |
GSSHA User's Manual
- 3 Project File
- 3.1 Required Inputs
- 3.2 Mapping Table β Optional
- 3.3 Overland Flow β Required
- 3.4 Interception β Optional
- 3.5 Rainfall Input and Options β Required
- 3.6 Infiltration β Optional
- 3.7 Channel Routing β Optional
- 3.8 Continuous Simulations β Optional
- 3.9 Saturated Groundwater Flow β Optional
- 3.10 Soil Erosion β Optional
- 3.11 Constituent Transport β Optional
- 3.12 Subsurface Drainage Network β Optional
- 3.13 Output Files β Required
