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Officials outline drainage master plan, say updated models and BLE data could cut flood insurance costs
Summary
Consultants and flood experts briefed the Master Plan Committee on Ble (base level engineering), Louisiana Watershed Initiative models, and a three-year drainage master plan intended to reduce flood risk, make projects shovel-ready and improve the parish's Community Rating System.
Consultants and flood experts told Livingston Parish's Master Plan Committee on Jan. 16 that newly available flood-data products and an upcoming drainage master plan could both improve local flood mapping and reduce homeowners'flood-insurance costs.
Gary O'Neil, who described the availability of Base Level Engineering (BLE) and Louisiana Watershed Initiative (LWI) datasets, said BLE provides high-resolution lidar-derived data and that Region 6 was developed as a pilot and is publicly available. "BLE data is designed to cover gaps where they don't have mapped areas or they don't have a flood study," he said, and added that BLE can offer closer approximations of base flood elevations in unmapped areas.
Jack Young, deputy practice leader for HAF (water resources), described a three-year, $4.6 million drainage master plan the parish has funded through state and federal grants. HAF and partners…
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