ICPR Modeling Tips - Bubbler Systems

Sometimes in flat areas it becomes necessary to use "bubbler systems" due to elevation constraints and minimum cover requirements.  An example of this type of system is depicted below.  Water from a wetland spills into an inlet or catch basin and is then piped under a roadway.  The water then "bubbles up" through another inlet and enters a spreader swale before overflowing to an outlet area designated as "F" in the sketch.

This type of system is easily modeled in ICPR using the following combination of links to connect the various nodes:

     Link A to B          Drop Structure

     Link B to C          Horizontal Weir

     Link C to D          Channel

     Link C to E          Channel

     Link C to F          Vertical Weir (Fread Eq.)

     Link D to F          Vertical Weir (Fread Eq.)

     Link E to F          Vertical Weir (Fread Eq.)

A small amount of storage would need to be included with node B (e.g., 0.0001 acres).