Discharge measurements at gaging stations

Techniques and Methods 3-A8
This book supersedes USGS Techniques of Water-Resources Investigations 3A-8, 1969, "Discharge measurements at gaging stations," by T.J. Buchanan and W.P. Somers, available at http://pubs.usgs.gov/twri/twri3a8/, and supplements USGS Water-Supply Paper 2175, volume 1, 1982, "Measurement and computation of streamflow: Measurement of stage and discharge," by S.E. Rantz and others, available at http://pubs.usgs.gov/wsp/wsp2175/html/WSP2175_vol1.html.
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The techniques and standards for making discharge measurements at streamflow gaging stations are described in this publication. The vertical axis rotating-element current meter, principally the Price current meter, has been traditionally used for most measurements of discharge; however, advancements in acoustic technology have led to important developments in the use of acoustic Doppler current profilers, acoustic Doppler velocimeters, and other emerging technologies for the measurement of discharge. These new instruments, based on acoustic Doppler theory, have the advantage of no moving parts, and in the case of the acoustic Doppler current profiler, quickly and easily provide three-dimensional stream-velocity profile data through much of the vertical water column. For much of the discussion of acoustic Doppler current profiler moving-boat methodology, the reader is referred to U.S. Geological Survey Techniques and Methods 3-A22 (Mueller and Wagner, 2009). Personal digital assistants (PDAs), electronic field notebooks, and other personal computers provide fast and efficient data-collection methods that are more error-free than traditional hand methods. The use of portable weirs and flumes, floats, volumetric tanks, indirect methods, and tracers in measuring discharge are briefly described.

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Discharge measurements at gaging stations
Series title Techniques and Methods
Series number 3-A8
DOI 10.3133/tm3A8
Edition -
Year Published 2010
Language ENGLISH
Publisher U.S. Geological Survey
Contributing office(s) U.S. Geological Survey
Description xiv, 87 p.
Online Only (Y/N) N
Additional Online Files (Y/N) N