FLOOD08201

• County: Statewide
• Community: State of Colorado
• Basin: Statewide
• Title: The NWS Dambrk Model Quick Users Guide
• Date: 6/20/1988
• Prepared By: National Weather Service
• Floodplain - Doc Type: Educational/Technical/Reference Information

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Appendix A-12

Note:

(33)

*(34)

*(35)

*(36)

Card (33) is omitted if KFLP

0, (card (2)).

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SNC(K,I) - 8 F 10.0 Format

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SNC(I)

Sinuosity coefficient (channel flow-path length/
floodplain flow-path length) corresponding to each
elevation HS (K,I) for each of the (NS-l)
reaches. If left blank, SNC (K,I) is assumed to be
1.0; however, it cannot be omitted if KFLP=l.

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DXM(I) - 8 F 10.0 Format

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DXM(I)

Minimum bx distance (mi) between cross sections used
in the computations. If DXM(I) is less than the
distance between two adjacent cross sections among
the NS cross sections read-in, then intermediate
cross sections are created within the program via a
linear interpolation procedure. (NS-l) values of
D~(I) are entered on one or more cards (8 values
to a card); maximum no. of DXM(I) values is limited
to 89; val'~es assigned to DXM(I) sho'lid not res'lIt
in more than 200 cross sections produced by the
interpolation procedure. (DXM values should be
determined by the relationship C times bt,where C
is the approximate speed of the flood wave.) If
left blank, program will try to automatically
determine the proper value. If a DXM value is
entered, program will use DXM but will print out a
suggested computed value for a later run. Some DXM
values may be specified while others are left
blank, in which case the blank values are computed
and used along with the specified values.

.-'

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FK:(I) - 8 F 10.0 Format

FKC ( I)

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Expansion/contraction coefficient; contraction values
vary from 0,1 to 0.3, expansion values vary from
-0,1 to -1.0; if expansion/contraction effects are
negligible, enter 0.0 for FKC(I); (NS-l) values of
FKC(I) are entered on one or more cards (8 values
to a card); maxim'lID no. of FKC(I) values is limited
to 89.

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QMAXD, QLL, DTHM, YDN, SOM, F1I, EPSY, TFI - 8 F 10.0 Format

QMAXD

Estimated maximum discharge (cfs) at downstream
extremity of channel/valley reach; can be read in
as 0.0 for initial run; subseq~ent runs can have a
value of Q~AXD as determined by the routing

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