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<blockquote data-quote="jgbrowning" data-source="post: 1294174" data-attributes="member: 5724">I could be having a basic physics problem, but here's how my thought went. If you were to build a tunnel 5ft under the surface to the ocean the water would rush in at a slower speed than if the tunnel was 2000ft below the surface at an angle. I thought this because the weight (pressure) of the water pushing through both tunnels is different. IE. The tunnel near the water's surface has less pressure than the one near the water's depth. (Too poor diagrams follow-the tunnels are the solid lines with the &quot;/&quot; steps...).................................________ surfacetunnel a =&nbsp; ocean_____/&nbsp; &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ......ocean surface................land surface....................................._/.................................._/tunnel b=ocean depth-_/Relative altitudes would determine if the water actually got to the surface on the other side except for the overcompensatory first rush. The water would also slow down the closer it got to the equilibrium point (which I supose would be where the waterpressure=airpressure). But until then, I was under the impression that greater water pressure would increase the speed of the water in the pipe, and that this pressure would increase the overall speed of the water. Of course the water in the angled tunnel has to travel farther, so any speed increase (if there is one) may not matter.I could be wrong. I only made a C in physics... <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f600.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":D" title="Big grin&nbsp; &nbsp; :D"&nbsp; data-smilie="8"data-shortname=":D" />joe b.</blockquote>

[QUOTE="jgbrowning, post: 1294174, member: 5724"] I could be having a basic physics problem, but here's how my thought went. If you were to build a tunnel 5ft under the surface to the ocean the water would rush in at a slower speed than if the tunnel was 2000ft below the surface at an angle. I thought this because the weight (pressure) of the water pushing through both tunnels is different. IE. The tunnel near the water's surface has less pressure than the one near the water's depth. (Too poor diagrams follow-the tunnels are the solid lines with the "/" steps...) .................................________ surface tunnel a = ocean_____/ ......ocean surface................land surface ....................................._/ .................................._/ tunnel b=ocean depth-_/ Relative altitudes would determine if the water actually got to the surface on the other side except for the overcompensatory first rush. The water would also slow down the closer it got to the equilibrium point (which I supose would be where the waterpressure=airpressure). But until then, I was under the impression that greater water pressure would increase the speed of the water in the pipe, and that this pressure would increase the overall speed of the water. Of course the water in the angled tunnel has to travel farther, so any speed increase (if there is one) may not matter. I could be wrong. I only made a C in physics... :D joe b. [/QUOTE]

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