Equation Inputs - CRiSP.1.5 User Manual

II.4.8 - Equation Inputs

CRiSP.1 contains equations which are, in effect, submodels. The parameters of these equations are set and viewed through the equation windows (Example in Fig. 18). The response of the equation to the parameters over the possible range of the independent variable is illustrated in the equation window as each parameter is changed. Note that for equation inputs if you alter an equation and wish to use that altered equation in subsequent model runs you must left-click the "activate/save displayed equation" button to activate it, otherwise the model will revert to the previously-displayed equation.

Fig. 18 Example of an equation window

Location (Dam) ¹ - identifies where to apply equation
Species ² - identifies species to which equation applies
activate/save displayed equation button ³ - activates equation changes
open sub windows (open spill schedule window) ⁴ - opens other windows
reset equation ⁵ button - returns to previous setting of equation
Equation ⁶ - displays a menu of equations
Sliders ⁷ - set equation parameters with sliders which function like other sliders, see section II.4.4.

Table 5 Variables that use equation windows
Equation name	Independent variable	Dependent variable
migration	Julian day	migration rate in miles/day
spill	% river spill	% fish passage with spill
Nsat	% N sat above 100%	spill in kcfs
delay	forebay delay probability	time of day
gas mort	% N sat above 100%	% mortality/day
depth distribution	depth (ft)	density, % of population/ft
fge	fish age	fish depth parameters