By Hydrosimulatics INC  

An interesting phenomenon, observed on a winter hydrogeology field trip: a sharp contrast in the flow condition between two stretches in a first order stream (creek) .  The stretch (F to I) was icy (mostly freezed), while the stretch from A to D was not. The turning point occurs at E.

 

Build a MAGNET model to explain it. Hydrogeological parameters are shown in the figure.


MAGNET/Modeling Hints

  • Use ‘Synthetic mode’ in MAGNET to create a model domain with the same dimensions as shown in the map
  • Overlay the provided SiteMap image file included in the problem description. Choose ‘Use Domain Extent’ to fit the image to the established domain size. 
  • Conceptualize the model as 1-layer aquifer with two-separate zones.Use a zones feature to assign specific parameters to the "orange" zone. The "green" zone can be parameterized with the domain attributes assigned in the Domain Attributes menu. 
  • Conceptualize the River and Stream features as constant head boundary conditions
  • Treat the domain boundaries as ‘no-flow’ boundaries.