How much rain do we need to fill Lake Granbury? A bunch – and that’s just an estimate.
Brad Brunett, water services manager with the Brazos River Authority, said it’s difficult to put an exact number to the amount of rain needed.
“For example, a local 3-4 inch rain right around the city of Granbury might only result in a lake level rise of 6 inches or so. However, if there was a 3-4 inch rain over most of the watershed upstream of Lake Granbury, and if the soil was relatively saturated, the lake might fill completely,” he noted.
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