With increasing drought and general weather variability, I wonder if they are still reliably provide a base load. For an extreme case, see Lake Powell drying up

With increasing drought and general weather variability, I wonder if they are still reliably provide a base load. For an extreme case, see Lake Powell drying up so much last year it generated little power: https://www.cnn.com/2022/04/30/us/west-drought-lake-powell-hydropower-or-water-climate/index.html https://www.cnn.com/2022/04/30/us/west-drought-lake-powell-h...