Standard Test Method for Indirect Measurements of Discharge by Step-Backwater Method

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

02-24-2022

Publisher

American Society for Testing and Materials

1.1This test method covers the computation of discharge of water in open channels or streams using representative cross-sectional characteristics, the water-surface elevation of the upstream-most cross section, and coefficients of channel roughness as input to gradually-varied flow computations.2

1.2This test method produces an indirect measurement of the discharge for one flow event, usually a specific flood. The computed discharge may be used to define a point on the stage-discharge relation.

1.3The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.4This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Committee	D 19
DocumentType	Test Method
Pages	5
PublisherName	American Society for Testing and Materials
Status	Current
Supersedes	ASTM D 5388 : 1993 : R2013

ASTM D 5541 : 1994 : R2014	Standard Practice for Developing a Stage-Discharge Relation for Open Channel Flow (Withdrawn 2023)
ASTM D 5674 : 1995 : R2014	Standard Guide for Operation of a Gaging Station

ASTM D 1129 : 2013 : R2020	Standard Terminology Relating to Water
ASTM D 1129 : 2013 : R2020 : EDT 2	Standard Terminology Relating to Water
ASTM D 2777 : 2021	Standard Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
ASTM D 2777 : 2013	Standard Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
ASTM D 1129 : 2013 : R2020 : EDT 1	Standard Terminology Relating to Water
ASTM D 3858 : 1995 : R2014	Standard Test Method for Open-Channel Flow Measurement of Water by Velocity-Area Method (Withdrawn 2023)