I am continually getting an error 'ERROR 41423: Channel is not defined for sediment routing in reach "Reach-1"'. From what I have seen HEC-HMS is not really used for sediment routing but I want to test it out in a simple model (1 sub-basin, 1 outlet connected by a reach). I have set all of parameters according to the User's manual with no luck, has anyone successfully used it? I am using the Uniform Equilibrium sediment method for the reach and the Laursen-Copeland transport potential for the basin. I am unsure how to remedy it. Any suggestions are appreciated. Thank you.
I've found a temporary solution. The sediment and therefore water quality modelling only work with Kinematic Wave and Muskingum-Cunge routing in HEC-HMS. I believe this is because these are the only two methods that ask for cross-section information. I'm changing the routing methods for my model. Any information on how to do sediment modelling with the Modified Pulse method in HEC-HMS is appreciated!
I'll confirm what Diana Sankar has suggested. As of HEC-HMS v.4.2.1, the user is limited to routing sediment using routing methods that define channel geometry, i.e. Muskingum-Cunge and Kinematic-Wave. HEC is working on adding user interface support in future versions that allows the user to specify channel properties for routing sediment cases where channel properties are not inherently required for the routing method, e.g. Muskingum.
I am also facing an error 'ERROR 41423: Channel is not defined for sediment routing in reach "Reach-120"'. this error is showing for all my 10 reaches. Kindly guide me what I have missed in my data and what should I do for results.
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