Lake could hit record low

June 19, 2013

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Lake Granbury resident John Holt said his boathouse has been of little use for several years.

“I haven’t been able to put my boat in the water in four years,” Holt said.

It probably won’t change anytime soon for Holt and scores of other boathouse owners because the lake is expected to drop even more.

It’s almost 7 feet low now and could drop another 2 1/2 feet this summer, the Brazos River Authority (BRA) predicts.

With continuing drought conditions, high water use, high temperatures and evaporation, Lake Granbury is projected to be 9.6 feet low by July 31.

The projections by the BRA show that Possum Kingdom Lake could be 12.6 feet low by the end of July, and Lake Whitney could be down 12 feet.

Lake Granbury reached a record low of 7 feet in September 2011. That record could soon fall.

The lake was almost 6.9 feet low Tuesday.

Last year on the Fourth of July, the statistics show Lake Granbury was 1 foot low. In 2011, the lake was 2 feet low on the Fourth. But in 2010, the lake was only 0.1 feet low on the holiday.

Going back 10 years, the lake was less than a foot low on the Fourth — until 2007. The hydroelectric plant at the Possum Kingdom dam was shut down in October 2007. When in operation, the plant was sending a stream of water down river, keeping Lake Granbury pretty full all summer.

Even with improved drought conditions, Granbury could still be 3.8 feet low by July 31. That’s because there’s typically not a lot of rainfall or “normal inflow” during June and July.

Granbury is 66 percent full at this time. With the worst case scenario, the lake would be only 56 percent full at the end of July.

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