D-R-A-F-T
GW Card: Geometry, Channel Width Attributes
Required for one-dimensional nodes
Card Description: Used to only specify or modify one-dimensional trapezoidal
channel attributes at the node specified.
Field
Variable
Value
Description
0, C 1-2
IC1
GW
Card group identifier.
0, C 3
IC3
Card type identifier.
Specifies Option 1: Universal assignment for all
b
/
nodes ≥ NODE.
(blank)
Specifies Option 2: Individual node assignment.
N
The one dimensional starting node or node number as
1
NODE
specified by IC3 above.
Note: Enter one dimensional corner nodes and
transition nodes.
Option 1: The starting node number.
+
Option 2: The node number.
+
2
WIDTH
+
Channel surface width at zero depth for NODE.
3
SS1
-, +
Left side slope at NODE.
4
SS2
-, +
Right side slope at NODE.
Note: Off-Channel Variables Follow.
Off-Channel Storage width associated with NODE at
5
WIDS
+
zero depth.
Water surface elevation to activate Off-Channel
6
WSCRIT
-,+
storage
7
SSS
-,0,+
Side slope for off-channel storage
Note: Code only one corner node per GW card. All slopes are with respect to
one unit of rise.
If you are using SMS, the GW card is the preferred method for defining one-
dimensional channel width attributes as opposed to the GN card.
SMS Note: As of this writing, SMS will read and interpret, but will not
update GW card data. Be aware that if the grid is renumbered by SMS, the node
numbers on GW cards may no longer agree with the new element connection table.
If this is the case, you will have to update the GW cards manually.
See also: GFGEN manual
100 Run Control GW Card
Users Guide To SED2D-WES
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