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Hydrometry. Slope-area method
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
for a peak flow that left high-water marks along the stream banks,
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
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.
| SDO | BSI: British Standards Institution |
| Document Number | ISO 1070 |
| Publication Date | Nov. 7, 2018 |
| Language | en - English |
| Page Count | |
| Revision Level | |
| Supercedes | |
| Committee | CPI/113 |
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