688 KEPOET UNITED STATES GEOLOGICAL SUEVEY 



Table VI. — Slopes of streams — Continued. 



!From mouth 

 of Big Sandy. 



Elevation. 



Fall per 

 mile. 



JOHN day's KIVEE. 



Moutli of McDougal's Creek . 

 Mouth 



SALT EIVEK. 



Its mean fall per mile from the mouth of Crow Creek to its mouth 

 is 24.5 feet. 



BLACKS'OOT eivee. 



Pirst crossing of Lander's road, near head of stream 



Second crossing of Lander's road. . . 

 "Where Lander's road finally leaves. 



POETNEUF KIVEE. 



Crossing of Lander's road 



Miles from 

 mouth. 



5o 



57 

 49 

 32 

 12 

 



Miles from, 

 preceding. 



Head of hend 



Foot of lower hend (enter Snake Eiver Plains) . 



Feet. 

 7,783 

 7,337 

 6,761 

 5,400 



6,850 

 6,550 

 6,266 

 6,069 

 5,600 



5,760 

 5,470 

 5,367 

 5,086 

 4,565 



Feet. 



49.6 

 52.0 

 44.0 



37.5 



17.0 



9.6 



39,1 



58.0 



8.6 



20.1 



16.8 



Most of tlie above latitudes and longitudes are approximate, having 

 been scaled oif from the map. 



