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power electrical, but you know there's nothing that has to be opened right so that's a that's the way to preserve the dam. The problem with spillways is they're typically not utilized very often and depending on the amount of water in the torrent and the way the spillway was built all this water coming down the spillway can actually remove the substrate whether it's concrete or rock or however it's built and the water can actually begin to erode under the dam. This has happened in the past with a number of other dams there's one in California that had a catastrophic near catastrophic failure because of the spillway basically washed away a huge part of the embankment around the dam. So this is a problem right so spillways are good but because spillways are often untested and they sit unused for many years they can degrade over time and then when they're used the amount of water that's coming down the spillway is so intense it can actually damage the structure when that happens you can actually then