Abstract
This document specifies a method of determining discharge in open channels from observations of the surface slope and cross-sectional area of the channel.
It is applicable to use under special conditions when direct measurement of discharge by typically more accurate methods, such as the velocity-area method, is not possible. Generally, the method can be used to determine discharge
a) for a peak flow that left high-water marks along the stream banks,
b) for a peak flow that left marks on a series of water-level gauges or where peak stages were recorded by that series of gauges, and
c) for flow observed at the time of determining gauge heights from a series of gauges.
The method is commonly used to undertake the extension of stage?discharge relationships above the highest gauged flows.
It does not apply to determining discharges in tidal reaches.
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General information
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Status: PublishedPublication date: 2018-11Stage: Close of review [90.60]
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Edition: 3Number of pages: 27
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Technical Committee :ISO/TC 113/SC 1ICS :17.120.20
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Life cycle
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Previously
WithdrawnISO 1070:1992
WithdrawnISO 1070:1992/Amd 1:1997
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