CLASS PLAN RIVER BEHAVIOR FLOW GAUGING MANNING’S EQUATION

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Presentation transcript:

CLASS PLAN RIVER BEHAVIOR FLOW GAUGING MANNING’S EQUATION BANKFULL DISCHARGE DISCUSS MCPHEE

RIVERS On Huntington, in water Warm clothes, food, $, Daily Bread Measure discharge - survey and velocity Trace flow Compare pools and riffles Field estimate of bankfull stage

Idealized flow patterns Alluvial, meandering river Dye tracing

Channel Mobility Watts Branch, MD

Downstream Organization Survey one of each type Calculate discharge for one of each type COMPARE

FLOW GAUGING QUANTIFY VOLUME OF WATER MOVING THROUGH CHANNEL NEED CHANNEL GEOMETRY NEED VELOCITY

Survey Across Stream Distance Velocity Water Depth

Flow meter for measuring water speed

Divide and Conquer

Add up the pieces

From counts to speed

Manning Equation

SLOPE

Wetted Perimeter

Try to define in field using Flow Levels Bank full flow About once a year Try to define in field using observations

Extreme Floods How does the Huntington Fit?

DEFINE BASIN AREA COUNT BOXES OR USE DIGITIZER