The surveys of the Expedition extended up the River Sacramento 

 to the highest point of boat navigation. At this late period, I do not 

 deem it necessary to give the outline of its navigation. The chart 

 that was published soon after the return of the Expedition is referred 

 to as containing all the necessary information of the state of the river 

 at that time, which will be found in the Hydrographical Atlas. 



