I am working on a model to analyze the tidal influence on a detention
basin. There is a junction structure along the outfall pipe, from the
detention basin, with a self-regulating tide gate. I want to close the
tide gate at elevation 4.0, to prevent water above this elevation from
getting into the detention basin.

I'm a rusty SWMM user and not sure how to do this? Can this be
accomplished from the Extran I and J data groups, and will this work if
my tide gate has both upstream and downstream conduits?

Thanks,
Jon Marshall, Civil Engineer
JMarshall@TRANSYSTEMS.COM