River Visitors

  Number of Grand Canyon river trippers annually:
22,500
 
  Number professionally-outfitted:
19,000
 
  Number self-outfitted:
3,500
 
   
 
  3 out of 4 or 75% of professionally-outfitted trip participants utilize motorized watercraft
  1 out of 4 or 25% of professionally-outfitted trip participants utilize non-motorized watercraft
       
  Average user-days per professionally-outfitted trip participant:
6 days
 
  Average user-days per self-outfitted trip participant:
16 days
 
       
   
 

River Trips

  Number of professionally-outfitted river trips annually:
640
 
  Number of professionally-outfitted motorized trips:
480
 
  Number of professionally-outfitted non-motorized trips:
160
 
  Number of self-outfitted river trips annually:
260
 
   
 
  Number of professionally-outfitted motorized trips in 1975:
437
 
  Number of professionally-outfitted non-motorized trips in 1975:
80
 
  Number of self-outfitted river trips in 1975:
45
 
   
 
  3 out of 4 or 75% of professionally-outfitted trips utilize motorized watercraft
  1 out of 4 or 25% of professionally-outfitted trips utilize non-motorized watercraft
       
  There are approximately 150 distinct professionally-outfitted river trip options currently available
   
  First professionally-outfitted recreational Grand Canyon river trip:
1938
 
  Regularly scheduled motorized recreational river trips begin:
1953
 
       
   
 

User-Day Allocation

  Total Colorado River recreational user-day allocation:
169,950
 
  Professionally-outfitted recreational user-day allocation:
115,500
 
  Self-outfitted recreational user-day allocation:
54,450