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Comparison of flume and towing methods for verifying the calibration of a suspended-sediment sampler

Water-Resources Investigations Report 86-4193

Prepared in cooperation with the U.S. Agricultural Research Service, U.S. Bureau of Reclamation, U.S. Forest Service, U.S. Bureau of Land Management, and the U.S. Federal Highways Admininstration
By:
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Abstract

Suspended-sediment samplers must sample isokinetically (at stream velocity) in order to collect representative water samples of rivers. Each sampler solo by the Federal Interagency Sedimentation Project or by the U.S. Geological Survey Hydrologic Instrumentation Facility has been adjusted to sample isokinetically and tested in a flume to verify the calibration. The test program for a modified U.S. P-61 sampler provided an opportunity to compare flume and towing tank tests. Although the two tests yielded statistically distinct results, the difference between them was quite small. The conclusion is that verifying the calibration of any suspended-sediment sampler by either the flume or towing method should give acceptable results.

Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Comparison of flume and towing methods for verifying the calibration of a suspended-sediment sampler
Series title:
Water-Resources Investigations Report
Series number:
86-4193
Year Published:
1986
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Minneapolis, MN
Contributing office(s):
Minnesota Water Science Center
Description:
v, 12 p.
Online Only (Y/N):
N
Additional Online Files (Y/N):
N