PPL Montana's 12 hydroelectric facilities are operating in anticipation of rivers and streams running high from a combination of rain and a heavy mountain snowpack.
The 194 MW Kerr and 12 MW Mystic dams and the Hebgen water control dam provide seasonal flood control that reduces higher spring flows in their downstream areas. PPL Montana's other nine hydroelectric plants also provide limited seasonal flood control and are generally operated as run of river dams.
Unusually high water conditions resulting from precipitation and thick snowpack — in some cases approaching 200 percent of average — have also created opportunities to generate more hydroelectricity. PPL Montana's hydroelectric plants have set generation records this year, PPL Montana said.
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