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HecRAS & HecHMS problems and solutions
reported by NRCS users
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| keywords |
problem description |
resolution description |
contact email |
HecRAS,
weir equation,
"zero ht." weir
Hager's eqn.
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A user was unsure about how to handle a new feature in RAS 4.0,
namely, modeling a "zero height" weir for a lateral structure.
He thought the standard weir equation might be modified, but
did not have reference information.
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A HecRAS support team member emailed him the following
references, which document what RAS is doing--
in particular, the use of Hager's equation for zero height weirs.
Hager's equation pic
new features pdf
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Clyde Giaquinto
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HecHMS,
runtime error
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A large watershed dataset that had run fine in HecHMS 3.1 would not
successfully run in the updated version 3.2, but produced an error
message (as follows). "ERROR 10000: Unknown exception or error;
restart HEC-HMS to continue working. Contact HEC for assistance."
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The HecRAS support team contacted HEC and it was determined that
the new version 3.2 had a memory problem that HEC needed to fix.
HEC provided a beta version to NRCS and scheduled the next release
to include this fix.
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Jim Stafford
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HecRAS,
schematic,
GIS Tools
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In RAS 4.0, Geometric Data Editor, when choosing Edit, Move Object,
and attempting to move a cross-section line, the user had all other
cross-sections disappear, and was unable to retrieve them.
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RAS version 4.0 changes the way cross-sections can be moved in the
Geometric Data Editor, by introducing a new pulldown menu:
GIS Tools. To successfully move a cross-section, the user must first
choose GIS Tools, GIS Cut Lines, Accept Displayed Locations (As
GeoReferenced)...". Then Edit, Move Object can successfully be used
to move cross-sections in the schematic.
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Dan Moore
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Add to this list by contacting
Jon Fripp
or
Dan Moore
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