Some while ago I did a blog entry on this website showing how I did a retention pond with a overflow pipe.  It's not a new posting; however I've included a link below to my website below to a PDF that you can read or download.  I got the idea from making a PDF of Rob Spangler's excellent thread on his water feature here on MRH.  I'm thinking about "publishing" more of my how-to's if there's interest.

I wanted a project of limited scope that would still provide evidence of progress.  Modeling some water sounded like a plan, so I got to work on the Cedar Creek scene from last year's MRH Forum Challenge.  For construction of these scene in preparation for water, see http://model-railroad-hobbyist.com/node/8540 .