From StateImpact Texas:
The funny thing about Walter E. Long Lake is that most people don't know it exists.
The lake, tucked into a rural-feeling part of Northeast Austin is big, by Austin standards. It can hold more water than Austin's two central city lakes -- Lake Austin and Lady Bird Lake -- combined. It was created to host a power plant, which it's done for for nearly 50 years. That's how it got its other name: Decker Lake.
But last week, Austin's city council approved a plan to wean Austin off Decker Power Plant electricity, opting to shutter the plant to lower citywide carbon emissions. If that happens, the lake could serve as Austin’s new city reservoir.