Fish Information:

The Fish Information portion of the Input Window for entering the parameters and criteria used to evaluate fish passage conditions.  You may select from three different methods to describe the fish capabilities and fish passage requirements:  

• Literature Swim Speeds – select from a list of swimming abilities that has been compiled from the available literature.

• User-Defined Swim Speeds – enter swim speed data for a specific fish.

• Hydraulic Criteria – use water velocity, water depth, and outlet drop criteria to assess passage conditions

Although data entered into each tab will be retained, the tab that is active will be the method used in the analysis.

Custom Settings:                                

Use the Custom Settings button to create predefined Fish Information settings.  This feature allows you to save the currently entered fish information as a custom setting, allowing you to quickly recall the saved settings when analyzing other crossings.  The Fish Information Custom Settings can be used to save information entered into any of the three tabs.  Hydraulic Criteria and Swim Speeds are each saved separately.  Each custom setting must be given a unique name, which is listed in the drop down menu below the custom settings button.  

To save data entered into the active fish information tab:

1. Open the Custom Settings dropdown by clicking the button

2. Select Edit or Add Settings or Save Current Settings

3. Enter a unique name for the settings and press Save

4. The saved settings should now be available in the Custom Settings dropdown

To use previously saved fish information settings, select from the list of names that appear in the Custom Settings dropdown menu.    

The Name given to the Custom Setting is displayed in the upper left-hand corner of the Fish Information box.  If no Custom Setting has been selected the field will remain blank.  If you change any of the fish information or select a different tab, the name will become grayed-back.  This is to warn you that the fish information associated with the selected Custom Setting is no longer being used.   

Velocity Reduction Factors:

Ratio of occupied water velocity (velocity within the region where the fish swims) to cross sectional average water velocity. The calculated average water velocity is multiplied by the reduction factor to account for areas of reduced velocity utilized by a swimming fish to conserve energy. The use of Velocity Reduction Factors is usually only applicable for small fish.  Different Velocity Reduction Factors can be applied to the inlet, barrel, and outlet zones.  A default value of 1.0 is provided.