Hi there! Today I am yet again going to take a look at the water level in Lake Mead, but I am also taking a look at how that has affected the production of electricity at Hoover Dam. But first, let’s power up the intro! Now I had planned to spend the weekend editing the big final video in my series of our mountain bike trip to Sedona in October, but then I discovered that some people actually had started watching the video I made in April on the water level in lake Mead and my visit to Hoover Dam so I figured I would do an update to that instead and perhaps expand on some on the information. So if you are coming from that video then, hi, welcome back! And if not, I’ll put a link in the description below and at the end of this video as well. It was perhaps more fancy video of this will be but this has some more information, so they are kind of complementing each other nicely. On our way home from the vacation in October that just talked about, we briefly stopped by Hoover Dam again and I shot some video thinking that I could use it to compare with the other two videos that I have shot there so far. But then I realized that just showing the water level doesn’t really tell us more than it yeah it’s bad, but we can’t see how much electricity that they’ve been able to produce despite the low water level. So I have done a bit of googling and found some data that i entered into a spreadsheet, so we can get a more clear picture. But before we take a look at that, here’s a bit of background information useful to know first. If what I am reading is correct, the turbines in Hoover Dam has undergoing an overhaul since 1999. The 17 turbines were installed in a time span from 1936 to 1961, and this overhaul meant that with new technology and knowledge, the performance have been improved and they are now operating more efficient. One example could be that they have managed to reduce the cavitation in the turbines which is forming of pockets of water free zones, you could also call it bubbles. Cavitation causes wear in the turbines and really do not want to have too much wearing your machinery down. Now that turbines run more efficient, the elevation of lake Mead can now go all the way down to 950 feet, and they are still able to produce electricity all the way down to that level. That’s compared to the old configurations which kept the low-level at about 1072 to 1015 feet depending on where we about it. And these two numbers are interesting when we take a look at what’s going on right now with the water level. So let’s take a look at those numbers! The blue line here shows the elevation of lake Mead and the green line shows the production of electricity. It’s interesting to know that the elevation in 2016 almost reached the old lower limit I talked about earlier, but with the new lower level of 950 feet I suppose there’s still a bit of spare capacity left in case of an emergency where the power plant somewhere would go offline and they would have to cover that production for a little while I suppose. In 2015 the dam produced 3.6 terawatt-hours and I have tried to add numbers for this year so far and if I assume that they will produce the same amount of power in December as last year, well the production would be a somewhat around the same as last year also about report 3.5 – 3.6 terawatt-hours Now if we take a few other years in comparison for example 2000, where the elevation reached 1219 feet, they produced about five terawatt hours of electricity. And in the record year, 1984, they will water level reached the spillways due to flood the year before that and they produced around 10.3 terawatt-hours of electricity. So it seems like they’re just about almost down to a third of the best year until now. well it looks like they ended up being a somewhat fancy video after all. If you want to see other video I made about Hoover Dam I’ll put a link in the description below, and in the upper left corner. Until next time, have fun on the interwebs!