Variability of bed load measurement Journal Article uri icon



  • The sampling efficiencies of two slightly different Helley‐Smith‐type bed load samplers were compared under carefully controlled field conditions. The samplers were identical in all respects except for the thickness of the metal used in their construction. The test results indicate that for coarse‐grained sand bed load, the sampler with a wall thickness of 1.5 mm has a sediment trap efficiency that can be as much as two times that of the sampler with walls that are 6.3 mm thick. In a separate test, bed load transport was monitored at a single channel cross section during a 10‐hour period of steady discharge. At individual sampling stations, measurement values ranged from nearly 0 to 3 times the mean. Composite bed load transport rates for full traverses of the channel width varied by a factor of 2.

publication date

  • January 1, 1988

has restriction

  • closed

Date in CU Experts

  • July 10, 2014 2:48 AM

Full Author List

  • Pitlick J

author count

  • 1

Other Profiles

International Standard Serial Number (ISSN)

  • 0043-1397

Electronic International Standard Serial Number (EISSN)

  • 1944-7973

Additional Document Info

start page

  • 173

end page

  • 177


  • 24


  • 1