标准编号：ISO 1070:2018
中文名称：水文测量 坡面积法
英文名称：Hydrometry — Slope-area method
发布日期：2018-11
标准范围
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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