Measurement of Stream Discharge by Wading

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<strong>Wading</strong> Rod Use (cont.)• Must estimate depth when velocitycauses “pile-up” on rod.• Visually extend water surface torod.
Velocity Determination• USGS generally usesPrice current meters• AA for large depthsStandard AA Meter• Pygmy for shallowdepthsSee OSW memos 85.07and 85.14Pygmy Meter
Page 1 and 2: Measurement of Stream Discharge by
Page 3 and 4: Agenda•The velocity-area concept
Page 5 and 6: Channel cross section is divided in
Page 7 and 8: Water velocity in each sub-sectioni
Page 9 and 10: Computing width and depth of indivi
Page 11 and 12: Recording Width and DepthMeter loca
Page 13 and 14: Measuring Cross-Section AreaDepth
Page 15: WadingRod UseRod set someter placed
Page 19 and 20: Headset and StopwatchStop Watch and
Page 21 and 22: Marking Meter• Meter revolutions
Page 23 and 24: Rating Table Equations• Equations
Page 25 and 26: Distance below water surface inperc
Page 27 and 28: Velocity Measurement MethodsGuide t
Page 29 and 30: Distance below water surface inperc
Page 31 and 32: Assessing Measurement• Assessing
Page 33 and 34: Selected References• Buchanan, T.

Measurement of Stream Discharge by Wading

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