Adjoint Catchment の NextDownID が間違っている

Question

私は ArcGIS Pro 3.3.2 で ArcHydro 3.2.52 を実行しています。Adjoint Catchment Processing を使って、どの集水域がどの下流の集水域に排水されるかを確認しようとしています。事前処理のステップ（排水線や集水域の生成など）は問題なく動作します。Adjoint Catchment Processing ツールを実行すると、Catchments の NextDownID は入力されますが、その結果は意味を成しません。集水域は全く接続されていない場所の集水域に排水されています。このツールの考え方を誤解している可能性以外に、何が間違っているのか全くわかりません。 
不合理な接続

glasbergenm · Answer

Thanks, I'll see what I can make of your suggestions of looking into identified data processing items

DeanDjokic · Answer

The concept of NextDownID (NDID) is fairly straightforward (HydroID of the downstream feature in the same feature class).  For catchments, it is based on drainage line connectivity and relationship between catchment and its drainage line.  It is hard to tell what might be going on with the process based on just the picture you provided (without HydroID and DrainID attributes on catchments and drainage lines surrounding the problem area).  I run the standard terrain processing workflow (although i did fill sinks) using 3.2.52 build, and the catchment NDIDs look good.  There are few ways to check what is going on on your end, but the simplest way is for you to send me the geodatabase with your processed vector data - at least drainage lines, catchments, adjoint catchments and APUNIQUEID table.  I can quickly look at it and and see it anything pops out.  If not, i might ask you to send the DEM and step-by-step process you went through and we'll try to see if we can recreate the problem with your data.

Dean