The process of impoundment, or capturing of the water going into Bois D’Arc Lake in Fannin County is underway. It’s the first new reservoir in East Texas in about 30 years. It will serve more than a dozen cities and 1.8 million people across the Metroplex area when complete. The lake will also provide economic development and recreational benefits for area residents. It will take about a year for the lake level to be high enough to be used as a water source. They should finish the dam across the lake by the end of the year.