P 8.5 P 8.45 " P 8.55 



PERCENT CHANGE OF 



OCCURRENCE 



PER YEAR 



Figure 5. Assigning probabilities to events 

 selected for simulation 



duplicated by a limited number of events. When these events are simulated, 

 the probability masses assigned to the events are used to construct stage- 

 frequency curves throughout the modeled area. 



19 



