how do you have a natural spring in the middle of a wholly engineered structure?
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Well the implication would be that it was pre-existing in the bedrock that the dam was built on. As if having a porous base wasn’t a problem that would be made significantly worse by putting tons of water on it.
it’s not really adding up to me. Bedrock is under the dam, and water is notorious for not flowing up.
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see seepage turn to next page
Well springs happen when a permeable layer is above an impermeable layer. Water from rain filters into the permeable rock from above and is stuck above the impermeable layer. If there is a place where the permeable layer is exposed by erosion it will flow out from the surface. Now it seems unlikely that the source of this water is rain that his entered into the strata uphill from the dam, and not the thousands of tons of water IN the dam. But ultimately I don’t think it matters AT ALL where the water is from. If water is seeping through the dam, it can cause internal erosion.
it does if you want to call it a natural spring
oh, is that where the goalposts got off to? Thanks.
Dam (in danger of/not in danger of collapse) is definitely the goalpost here. (natural spring/leak) is at best the 4th down marker, if not a complete distraction like where the Gatorade is stored.
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It might be just from condensation on the surface.
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