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CRiSP.1 provides the ability to vary parameters over a run. This allows a representation of random factors. The randomness is incorporated in different ways for flow, dam passage, reservoir mortality and travel time. The approach is to describe specific parameters as having a deterministic part and a stochastic part. A deterministic part may change with the independent variables that determine the parameter but the value obtained does not change from one model run to another if all factors are the same. The stochastic part changes each time it is calculated in CRiSP.1 or between model runs. The value of the stochastic part is obtained from a random number distribution function using a "broken-stick" distribution function. This is described along with deterministic and stochastic parts of the parameters.
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Columbia River Salmon Passage Model CRiSP.1.5 Theory, Calibration & Validation Manual
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