Distributed Hydrology Soil Vegetation Model

Stream/road class files

Required:

Required when a stream and road network is specified.

Name:

User-specified

Read by:

channel_read_classes()

Format:

ASCII

Purpose:

Contains channel routing parameters common to groups, or classes, of stream/road segments.

Comments:

The file format is relatively free. Data for a single class is expected to be on a single line, with spaces or tabs separating individual values. Integer fields can not contain a decimal point; float fields may or may not have have a decimal point. However, float fields cannot be in an engineering or scientific format (that is 1e-7), they must typed out as decimal numbers. Comments can be inserted. A comment is considered any portion of a line following a pound sign (#).

Details:

The files consist of up to six fields per line, specified in the following order:

Channel ID	unique identifier for the channel class; must be a positive integer, but not necessarily consecutive (integer)	<required>
Hydraulic width of the ditch	hydraulic width in m of the stream channel or road ditch (float)	<required>
Hydraulic depth of the ditch	hydraulic depth in m of the stream channel or road ditch (float)	<required>
Friction coefficient for the ditch	Friction coefficient (Manning's n) for the channel class (float)	<required>
Maximum infiltration	maximum infiltration rate through the road (ditch) surface in m/s. This must be specified in the stream class files as well, but is not used in that case (float)	<required>
Road type	Road crown type; one of OUTSLOPED, CROWNED, or INSLOPED; used only for road classes (the default is OUTSLOPED if not specified); its value is read but ignored when specified for stream classes. (string)This is not used for roads in the dhsvm 2.0.1 version.	<required for ROAD>
Road Erodability	for DHSVM 3.0 and higher	<required for ROAD>
Road Ditch Erodability ( overland erodability )	for DHSVM 3.0 and higher	<required for ROAD>
d50	for DHSVM 3.0 and higher	<required for ROAD>
Manning's coefft for the road	for DHSVM 3.0 and higher	<required for ROAD>
surface	PAVED, UNPAVED or DIRT, for DHSVM 3.0 and higher	<required for ROAD>
Road Width	for DHSVM 3.0 and higher	<required for ROAD>

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