Project File:Soil Erosion – Optional

3.10.1 Soil Erosion Simulation - Required

Card	Argument	Description
SOIL_EROSION ##	integer	Specifies overland soil erosion calculation method. 1 - Engelund-Hansen 2 - Kilinc Richardson 3 - Stream power 4 - Effective stream power 5 - Unit stream power 6 - Shear stress
OUTLET_SED_FLUX "filename.osf"	file name	Output file name for outlet sediment flux (cms). Output is listed in columns, first being time, followed by sediment flux for each specified sediment size. Wash sediments are listed first. Followed by the sand sizes.

3.10.2 Soil Erosion Parameters - Required

Soil erosion parameters must be specified in the Mapping Table. See description of inputs in Mapping Table Section - Chapter 12

3.10.3 Optional Inputs

Card	Argument	Units	Default	Description
SAND_SIZE ##.##	real	mm	0.25	Representative grain-size for sand-size particles.
WATER_TEMP ##.##	real	°C	20	Water temperature
SED_POROSITY ##.##	real		0.4	Value of the porosity of channel bed sediments (0.0-1.0).
ADJUST_ELEV "filename.ele"	file name			Output file containing the final elevations due to erosion and deposition. Inclusion of card results in new elevations being computed every overland soil erosion update
IN_SED_LOC "filename.isl"	file name			Input file containing a list of internal link/node locations to output sediment hydrographs. Format identical to IN_HYD_LOC option. Valid only with CHAN_EXPLIC or DIFFUSIVE_WAVE.
OUT_SED_LOC "filename.osl"	file name			Output file containing columns, first of time then sediment discharge (cms) for each sediment size. Sediment sizes that are wash load are listed first, followed by sand sizes. Valid only with CHAN_EXPLIC or DIFFUSIVE_WAVE.
OUTLET_SED_TSS "filename.oss"	file name			Output file containing columns, first of time then total suspended sediment(mg/L) at the watershed outlet. Valid only with CHAN_EXPLIC or DIFFUSIVE_WAVE.
OUT_TSS_LOC "filename.tss"	file name			Output file containing columns, first of time then total suspended sediment(mg/L) for each location specified in the IN_SED_LOC file. Valid only with CHAN_EXPLIC or DIFFUSIVE_WAVE.

3.10.4 Optional Outputs

Card	Argument	Units	Default	Description
NET_SED_VOLUME "base_filename.ext"	file name	mm	none	Output net deposition (+) or erosion (-)
VOL_SED_SUSP "base_filename.ext"	file name	g m-3	none	Output volume of suspended sediments in each grid cell

GSSHA User's Manual

3 Project File

3.1     Required Inputs

3.2     Mapping Table – Optional

3.3     Overland Flow – Required

3.4     Interception – Optional

3.5     Rainfall Input and Options – Required

3.6     Infiltration – Optional

3.7     Channel Routing – Optional

3.8     Continuous Simulations – Optional

3.9     Saturated Groundwater Flow – Optional

3.10     Soil Erosion – Optional

3.11     Constituent Transport – Optional

3.12     Subsurface Drainage Network – Optional

3.13     Output Files – Required