fix direction line in a hydrography feature

[Raphael_Augusto_FoscariniFerre]

Hi everyone...

I have here this hydrography feature, but it was created without respect the flow direction...
I mean, some features are pointing upstream and some are pointing downstream...

There is no standard, it was created randomly...

Once i fixed another feature like that with the 'flip' tool, but it was a small area... This time, it has about 11k segments and it would take a lot of time...

So, is there any tool or process that can help me to fix this hydrography feature?

[KevinDoyle]

I'm having similar problem and wish someone would answer this. If there isn't a tool for this kind of operation, I hope it is something ESRI looks into developing. Sorry I couldn't help. I just wanted to let you know you are not alone.

[MarkBoucher]

Look here http://forums.arcgis.com/threads/55665-Set-Flow-by-Digitized-Direction

[MarkBoucher]

Here too http://forums.arcgis.com/threads/47535-ArcHydro?p=163261#post163261

[HardolphWasteneys]

Raphael and Kevin,

you might want to look into Linear Referencing; Create Routes from your streams that have a direction based on a starting spatial orientation priority that overrides the digitized direction of the input features in the polyline segments.

http://webhelp.esri.com/arcgisdesktop/9.3/index.cfm?TopicName=Using_existing_linear_features_to_crea...

Here's a few threads about using Linear Referencing for stream problems and directional markers.

http://forums.arcgis.com/threads/58826-Show-Direction-of-Route-with-Arrow-Symbol?highlight=Hardolph
http://forums.arcgis.com/threads/4302-Calculating-river-distance-from-one-point-to-another?highlight...

that would definitely overcome the specific problem you are referring to but may lead into deeper waters when you see what else you can do.

Hardolph