In 2013 the City of San Angelo had to pump water to the cage at Twin Buttes Reservoir's North Pool. The picture below shows a dry lake bed in front of the structure.
That changed with Fall 2018's massive runoff. The top of the cage can be seen below. Look for the thin white horizontal rectangle slightly above the water's surface. It's below the gatehouse at the top of the dam.
For decades the City's excuse for poorly maintaining Twin Buttes has been: "There's no water." That's changed dramatically. We'll see if the city does any better now that Twin Buttes holds a huge inventory of untreated water to sell. I'll check with city officials and post their response.