boundary stages in ICPR models 1

[cimmeron]

I am working on a ICPR model and the results indicate that the 5,10 and 25 year runoffs all produce peak elevation stage in the downstream boundary equal to the peak stage set in the downstream boundary. What is the significance of this?

 

[TerryScan]

This is how the program works. From ICPR help:

"Generally, when we talk about boundary nodes, we are referring to time-stage node types. These are typically placed at locations where stage elevations as a function of time are known or can be reasonably estimated. The use of a time-stage node forces a water level dependent only upon time rather than on storage characteristics. These nodes are normally used at the downstream extremity of your model, although they can be placed anywhere in your network."

ICPR v3 Help System, (c) 2001, Streamline Technologies, Inc.

Downstream boundary nodes are the beginning point for calculations. So, the data you supply is supposed to be a "known".