Input Files

MODEL APPLICATION EXAMPLE

Input Files

Home

Registration

Background

Processes

Flow Routing

Sediment Routing

References

Example

Input Files

Output Files

Download

Feedback

Required CASC2D inputs and options are:

(1) Simulation control data: computational time step, simulation duration, and number of rows and columns and cell size of the grid.

(2) Precipitation data: precipitation duration and a) if uniform rainfall, the intensity or b) number of rain gauges, rainfall data time step, and rainfall gauges UTM coordinates if distributed rainfall.

(3) Basin outlet characteristics: a) row, column and overland slope of the basin at the outlet and b) link characteristics if channel routing is selected: (link number, total nodes, type, width, depth, side slope, roughness and sinuosity)

(4) Soil parameters: number of different soil types, and a) if infiltration occurs: hydraulic conductivity, suction head, and moisture deficit and b) if erosion option is selected: percentages each soil fraction and the USLE soil erodibility factor.

(5) Land use parameters: number of different soil uses, roughness coefficient and interception depth and, if erosion option is selected, the USLE cover and management practice factors.

The input files are: the simulation control file (specifying parameters defined in the last 5 paragraphs), channel data file, and precipitation file (if distributed rainfall is used). Input as raster ASCII maps are: DEM, soil index, land use index, watershed mask, and channel links and channel nodes (if channel routing is selected). The storage depth ASCII grid and baseflow depth ASCII grid are optional grids (See Table 4 and Table 5).

NOTE: The links in the last paragraph are connected to the input files included in the downloadable example files in this web site.

Table 4. CASC2D-SED input and output text files.

	*Project name*	*File variable*	*Description*
*Input* *Text Files*	CONTROL	control_file	Controls the simulation.
	PRECIP	rain_file	Precipitation data if gages are present [in/hr]
	CHANNEL	chn_file	Channel characteristics data for each link and node.

Table 5. CASC2D-SED input raster maps.

	*Project name*	*File variable*	*Variable Read*	*Description [units]*
*Input Grids*	ELEVATION	elev_file	e[j][k]	Grid elevation at cell (j,k) [m]
	SOIL	soil_file	isoil[j][k]	Soil type index at cell (j,k)
	LANDUSE	iman_file	iman[j][k]	Land use / land cover index at cell (j,k)
	MASK	shap_file	ishp[j][k]	Watershed and channel network definition at cell (j,k)
	LINK	link_file	link[j][k]	Link number at cell (j,k)
	NODE	node_file	node[j][k]	Node number at cell (j,k)
	STORAGE_DEPTH	sdep_file	sdep[j][k]	Storage deposition at cell (j,k) [m]
	BASE_DEPTH	bdepth_file	ho[j][k]	Base depth at cell (j,k) [m]

Department of Civil and Environmental Engineering - Colorado State University
Fort Collins, Colorado 80523-2028 USA (970) 491-5048
Last updated: 25 August 2006