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Levee L627

Background: The L-627 Missouri River Left Bank and Indian Creek Right Bank Levee System was damaged during the 2019 Flood Event, leading to the Project Sponsor submitting a Public Law (PL) 84-99 Rehabilitation Assistance request to the US Army Corps of Engineers – Omaha District.

Current Action: Design funding has been received to begin work on the levee repair project.  The purpose of this rehabilitation project is to repair the levee system to the authorized level of flood risk management.

Next Steps:

  1. Complete the Engineering and Design process.
  2. Advertise and award the levee repair construction contract.
  3. Repair the system to its authorized level of flood risk management.
  4. Conduct a follow-on damage assessment of the levee once the Missouri River water levels recede to determine if there is more damage to the levee system that is eligible for PL 84-99 Rehabilitation Assistance.

Status Updates:

16 July 2019 – An initial site damage assessment and economic analysis has been completed.  From this initial assessment the USACE team has determined that there are damages to the levee system that are eligible for PL 84-99 Rehabilitation Assistance. Engineering and Design (E&D) work is on-going for rehabilitating the L-627 levee system.  The team is anticipating to be done with the E&D process for repairing the initial damage identified by late-summer.

NOAA River Level Observations & Forecasts

NOAA Water Gauge Levels

L627 Levee Imagery

Settlement damage on levee L627 May 10, 2019
Levee L627 settlement damage identified by the USACE Omaha District team during their initial damage assessment in Story County, Iowa May 10, 2019.
Levee L627 erosion damage observed May 10, 2019
Levee L627 erosion damage identified by the USACE Omaha District team during their initial damage assessment in Story County, Iowa on May 10, 2019.
High water along levee L624 May 29, 2019
Missouri River and Mosquito Creek high water on May 29, 2019. Photo captured looking North, just south of the Mid-American Power Plant.
High water along levee L624 May 29, 2019
Missouri River high water against the L-624 levee system. Photo captured south of Lake Manawa on May 29, 2019.
High water in Mosquito Creek Mar. 14, 2019
High water in Mosquito Creek on Mar. 14, 2019. Photo taken east of Lake Manawa looking south towards the Missouri River.
High water in Mosquito Creek on Mar. 14, 2019
High water in Mosquito Creek on Mar. 14, 2019. Photo taken from the Hwy 92 bridge looking southeast towards the I-29 in Iowa.

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