In a supply line, drain, surface run off? Detail your question.
fast
timber = wood dam = structure built to block/slow the flow of water so... timber dam is a wooden structure created to block or slow the flow of water.
To slow down water flow on rapid rivers.
The reason it is too slow is because the gradient of the pipe is incorrect. Any waste pipe has to be 1:40 (meters)
Somewhere on the planet a slow westerly flow of either water or wind is happening all the time.
Capillaries have slow flow. This slow speed maximizes opportunities of diffusion of oxygen, nutrients, and wastes.
Erosion is a fast process because the flow of water is fast by the additon of wind
The lymphatic system has no pump so the flow of lymph is slow. The contraction of surrounding muscles helps to make if flow.
Cold (almost freezing) water applied to lava can slow the flow and eventually cause it to solidify.
The hot water lines are quicker to become blocked with lime scale. The scale slows the water flow and restricts the pipes.
Groundwater flow is very slow compared to currents in surface water, generally moving at less then one and one-half meters per day.
These are some things that cause the speed of water to slow down. Broad flat channels slow a river down, a rough channel will also slow the water down. Basically, anything that increases the surface area of a body of water, against which water flows will slow it down, this is due to the increase of friction. In addition, water flows slowest at the margins of a river, if the river is winding, water will flow slower at the inside curves.