USGS collects sediment samples at thousands of locations across the U.S. using nationally consistent methods. Sediment can be transported as suspended load (moves with the flow of the river) or as bedload (rolls along the riverbed) or can be deposited on the riverbed or bank.

Choosing the most appropriate sampling device and technique depends on: 1) The purpose of the sampling; 2) the location of the sediment; and 3) the characteristics of the sediment. This document should be used only as. table that can be used as an aid in selecting the most appropriate sediment collection device).

Feb 25, 2025 · EPA Region 4 Science and Ecosystem Support Division (SESD) document that describes general and specific procedures, methods, and considerations when collecting sediment samples for field screening or laboratory analysis.

The essential tasks in sediment sampling are to collect representative, undisturbed samples that meet the requirements of the program, and to prevent deterioration and contamination of the samples before analyses.

2.2 Sediment Sampling (Method 5035) The following sampling protocol is recommended for site investigators assessing the extent of VOCs in sediments at a project site.

May 9, 2024 · Sediment Sampling (pdf) (323.3 KB, April 22, 2023, LSASDPROC-200-R5) Field Branches Quality System and Technical Procedures

The Sediment-Sampling Equipment section encompasses discussions of characteristics and limitations of various models of depth- and point-integrating samplers, single-stage samplers, bed-material samplers, bedload samplers, automatic pumping samplers, and support equipment.

Sediment samples may be recovered using a variety of methods and equipment, depending on the depth of the aqueous layer, the portion of the sediment profile required (surface versus subsurface), the type of sample required (disturbed versus undisturbed) and the sediment type.

FISP suspended-sediment sampling equipment is designed and calibrated to sample isokinetically. An isokinetic sampler collects a water-sediment sample from the stream at a rate such that the velocity in the intake nozzle is equal to the incident stream velocity at the nozzle entrance. The water-sediment sample col-

Jun 8, 2018 · Sediment sampling and surrogates. Sediment work using samplers, laser diffraction, and acoustics on the Kickapoo Creek near Bloomington, Illinois, on April 22, 2011. Credit: Tim Straub, USGS