By Thomas K. Edwards and G. Douglas Glysson
Abstract
Introduction
Perspective
Sediment-sampling equipment
Sediment characteristics, source, and transport
Data needs
General
Suspended-sediment samplers
Depth- and point-integrating samplers
Hand-held samplers-US DH-81, US DH-75, US DH-48, US DH-59, and US DH-76
Cable-and-reel samplers-US D-74, US D77, US P-61, US P-63, and US P-72
Sampler accessories
Nozzles
Gaskets
Bottles
Single-stage samplers
Bed-material samplers
Limitations
Hand-held samplers-US BMH-53, US BMH-60, and US BMH-80
Cable-and-reel sampler-US BM-54
Bedload samplers
Automatic pumping-type samplers
Development and design
Installation and use criteria
Placement of sampler intake
Sampler advantages and disadvantages
Intake orientation
Data analysis
Intake efficiency
Cross-section coefficient
Description of automatic pumping-type samplers - US PS-69, US CS77, US PS82, Manning 54050, and ISCO 1680
Support equipment
Sediment-sampling techniques
Site selection
Equipment selection and maintenance
Suspended-sediment sampling methods
Sediment-discharge measurements
Single vertical
Surface and dip sampling
Multivertical
The equal-discharge-increment method
The equal-width-increment method
Advantages and disadvantages of equal-discharge-increment and equal-width-increment methods
Point samples
Number of verticals
Transit rates for suspended-sediment sampling
Observer samples
Sampling frequency, sediment quantity, sample integrity, and identification
Sampling frequency
Sediment quantity
Sample integrity
Sample identification
Sediment-related data
Water temperature
Stream stage
Cold-weather sampling
Bed-material sampling
Materials finer than medium gravel
Materials coarser than medium gravel
Location and number of sampling verticals
Sample inspection and labeling
Bedload sampling technique
Computation of bedload-discharge measurements
Measurements for total sediment discharge
Reservoir-trap efficiency
Inflow measurements
Outflow measurements
Sediment accumulation
Other sediment data-collection considerations
Selected references
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