II.5.8 - Tutorials Button

Dam: Illustrating Dam Passage

The dam tutorial is an individual based model (IBM) illustrating the effect of the forebay distribution and other factors on fge. In this submodel fish in the forebay are pulled into the turbine entrance where they encounter either the bypass screen or the turbine. After this submodel is run, lines are drawn showing what percentage of fish are deeper than each line. To understand the importance of forebay distribution, change that distribution with the mouse as you would other sliders in CRiSP.1. See slider input in section II.4.4 for more information on this.

Fig. 61 Dam Passage Tutorial window

The Dam Passage Tutorial has the following controls:

• Vertical distribution of fish in the forebay is controlled in the left side panel. Change this by holding a mouse button and dragging mouse on sliders.
• Initialization changes random variables in model.
• Flow parameters change the submodel flow into the turbine.
  • var slider changes variability in flow direction
  • flow slider changes velocity of flow.
• Behavior parameters change how the fish respond to the trashrack and the bypass screen.
  • esc.vel is the velocity fish swim away from an object
  • variance is the variability in the swimming velocity
  • magnitude describes variability in escape direction.

The Travel Time Tutorial indicates the processes by which fish move through a reservoir system. The tutorial has four interactive windows.

Fig. 62 Tutorial illustrating migration in CRiSP.1

Travel Time Controls

These allow the user to alter various settings used in the tutorial:

- Reach Length - in which fish migrate (units are miles)

- Number of Histograms - displaying information

- Histogram Display Interval - days between each interval of display

- Sigma - the variability in the migration rate

- SET FLOWS button allows the user to define river flow over time

- DRIFT button no longer included in current model.

This illustrates the probability distribution of fish in the reservoir for each increment of time. At the downstream end they pass into a dam and do not return back upstream so they seem to be "absorbed" by the dam.

Percent of fish exiting reach

This illustrates the number of fish that exit the reach over each time increment. The flux is illustrated as the percent passage each day.

Cross-river spread

This is process no included in the model

Manuals

Complete documentation on the theory, calibration of CRiSP.1 and error messages are accessible through this submenu.