Figure 4. — Intensity -duTati.on-freqi'.enoy curves for recurrence intervals of 2 to 50 



years and durations of 2 minutes to 6 hours for the Great Basin Experimental Area. 

 Curves for preciipitation Zone 1 ajce shown in 4aj Zone 2 in 4bj Zone 3 in 4c, and 

 Zone 4 in 4d. (Log-extreme distribution) 



3 



o 



z 



z 



u 

 Z 



z 



m 



z 



z 



o 



u 



4 56789X> 15 



RECURRENCE INTERVAL. YEARS 



20 35 30 



40 SO 



B 



ae 

 3 

 

 z 



z 



u 



z 



I/I 



z 



z 







QE 



4 5 67 89K> 15 



RECURRENCE INTERVAL. YEARS 



20 35 30 



40 



SO 



12 



