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Blue Earth County approves impoundment and sediment-storage project for County Ditch 56
Summary
After an engineers report and a brief public hearing with no public speakers, the Blue Earth County Drainage Authority approved a plan to impound and divert portions of County Ditch 56. The project is grant-funded and designed to capture sediment and reduce flood peaks into Lake Crystal.
Blue Earth Countys Drainage Authority voted June 10 to approve a draft findings order granting a petition to impound, reroute and divert portions of County Ditch 56.
ISG engineer Chuck Bridal presented the final engineers report and described a roughly 7-acre easement to create a storage basin with about 5.5 acres of storage and wetland area. Bridal said the basin will store about 51 acre-feet of water during flood events and is expected to capture just under 350 tons of sediment annually. He told the board the design includes a four-foot-deep sediment trap that staff expect to clean on a two- to five-year…
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