Capacity 4 Catchments Under construction
Velocity Plank
A simple Citizen Science tool to measure stream velocity.
The Transparent Velocity Head Rod (TVHR), or for short, the Velocity Plank is a very simple tool that allows us to measure the velocity of a stream. The velocity plank is a simple construction of transparent plastic allowing for simultaneous measurement of upstream super elevated water level and the depressed downstream water level created when the rod is placed into flowing water. The difference between these water height measurements can be used to predict the depth-averaged flow velocity.
