Corps Closes Breach on Levee L550 South of Watson, Missouri

Omaha, Neb. -- The U.S. Army Corps of Engineers, Omaha District completed an initial breach closure on levee L550 south of Watson, Missouri, on Sept. 12.

This closure of breach L-550-B-I near river mile 538 stops the inflows of water, thereby allowing for the start of follow-on construction activities aimed at increasing the level of flood risk management to approximately the 4% Annual Chance Exceedance (25-yr) level for this section of the L-550 Levee System until the system can be fully rehabilitated.

“Closing the L-550_B inlet breach has been an important milestone for USACE since our team arrived on site in late June. The government and contractor team worked collaboratively to identify and mitigate risks to the breach closure by proactively constructing a rock revetment and sand berms along the river bank in order to ensure increased flows and water velocity was not an impairment to construction as the team closed the L-550_B breach,” said Brendan Kight, USACE Area Engineer. “It was great to see that the team’s hard work directly contributed to a successful inlet breach closure that Thursday. We still have more work to do on-site, but the closure of this breach along with the northern L-550_A breach back on August 24th is a great milestone in the rehabilitation of the L-550 levee system.”

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