What is the heading of the piece of equipment used to weigh a rivers surface speed?
the ball thing speedometer.lol
really:Hydrological Instruments are used to device flow velocity in open channel such as rivers, streams, tidal marshes, sewers, flumes, conduits, etc. The product line comprises two models of bucket-wheel flow meters that cover the velocity collection of 0.015 to 7 m/s. There are two readouts available: an earphone assembly that is used to count clicks over a fixed time of year of time, and a completely automatic hand held digital display. Source(s): http://www.gurley.com/GPICoProfile/
Theres no real piece of equipment except for a float.
(For volume)......... Just measure the depth and depth of the river. Allow a deduction of 33% for the sloping sides under hose and then check the speed of flow with a float (your question) . This done by measure or pacing a distance on the riverbank marking the birth and end of your measure. Throw a float (piece of wood maybe) surrounded by the middle of the river at the start point and time how long it takes to reach your closing stages point. A little bit of maths and Hey Presto!
An orange. No, seriously, when I have to measure the velocity of a river for a project at school, I used an red, as it floats, is round and so bounces off protuberances, is orange within colour and easily visible, and is biodegradable within case of loss. The other pieces of equipment are a stopwatch, two sticks, and something for measuring distance.