How to Make an Internal Outfall into an External Outfall

Subject: How to Make an Internal Outfall into an External Outfall when you have more than one link connected to an Outfall
Step 1: Identify the Problem “ERROR 141: Outfall J-561 has more than 1 inlet link or an outlet link.” Means you have an outfall node in the middle of your model.

Step 2: Make a new outfall.

Step 3: Make the new Outfall have the same invert as the old outfall

Step 4: Convert the older outfall to a Junction using the Pick Axe and the Convert Type tool


Step 5: Make a new Link connecting the old and the new Outfall

Step 6: Convert the new Link to an Outlet Type using the Convert Type Tool.

Step 7: Set up the parameters for the new Outlet Link


Step 8: For those outfalls that DO have more than one link you need to make a new Outfall.



You should be able to run the model now

How to Make an Internal Outfall into an External Outfall when you have more than one link connected to an Outfall in SWMM5

by dickinsonre
Subject:  How to Make an Internal Outfall into an External Outfall when you have more than one link connected to an Outfall
Step 1:  Identify the Problem "ERROR 141: Outfall J-561 has more than 1 inlet link or an outlet link." Means you have an outfall node in the middle of your model.
Step 2:  Make a new outfall.
Step 3:  Make the new Outfall  have the same invert as the old outfall
Step 4:  Convert the older outfall  to a Junction using the Pick Axe and the Convert Type tool
Step 5:  Make a new Link connecting the old and the new Outfall
Step 6:  Convert the new Link to an  Outlet Type using the Convert Type Tool.
Step 7:  Set up the parameters for the new Outlet Link
Step 8:  For those outfalls that DO have more than one link you need to make a new Outfall.
You should be able to run the model now

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