Upstream Water Surface Elevation in Indirect Methods of Streamflow Measurement Formulas

Upstream Water Surface Elevation measured above the Weir Crest. And is denoted by H₁. Upstream Water Surface Elevation is usually measured using the Meter for Length. Note that the value of Upstream Water Surface Elevation is always negative.

Indirect Methods of Streamflow Measurement formulas that make use of Upstream Water Surface Elevation

fxSubmerged Flow over Weir using Villemonte FormulaGo

fxFree Flow Discharge under Head using Submerged Flow over WeirGo

FAQ

What is the Upstream Water Surface Elevation?

Upstream Water Surface Elevation measured above the Weir Crest. Upstream Water Surface Elevation is usually measured using the Meter for Length. Note that the value of Upstream Water Surface Elevation is always negative.

Can the Upstream Water Surface Elevation be negative?

Yes, the Upstream Water Surface Elevation, measured in Length can be negative.

What unit is used to measure Upstream Water Surface Elevation?

Upstream Water Surface Elevation is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Upstream Water Surface Elevation can be measured.

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