What is ISO 1070 - Slope-area method about?
ISO 1070 is an international standard that discusses the attributes of hydrometry .
ISO 1070 specifies a method of determining discharge in open channels from observations of the surface slope and cross-sectional area of the channel.
ISO 1070 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. The method can be used to determine discharge: