Re: Stream Flow by RubiBlue

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Posted by Curious on February 27, 2004 at 15:03:10:

In Reply to: Re: Stream Flow posted by RubiBlue on February 27, 2004 at 02:33:04:


Water flowing out across sand will flow into the sand. The point at which it flows into the sand is determined by the speed of the water’s flow, the quantity of water and the composition and quantity of the sand. There are many variables here so the following is a simplification.

The sand can absorb the water at a set rate. If the flow is high enough a portion of the water will remain on top of the sand until it has the opportunity to flow into it. The more flow, the more distance the water can continue over the sand. As the flow dissipates, the point where the water flows into the sand will retreat.

Water coming up from below does so because its underground flow has been impeded, usually by rocks. Therefore is seems to emerge from the same place each time because the underground structure that caused it to flow up has not changed.

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