L575 Levee Restoration Information - UPDATED 6/8/19

Background: The L-575 Benton-Washington-McKissock-Buchanan-Atchison-Hamburg Levee System experienced significant damage during the 2019 Flood Event. This led to seven (7) breaches, along with substantial other damages, occurring throughout the Levee System.
Current Action: Two priority breaches that are impacting the I-29 corridor have been identified for initial repairs. These two construction contracts were awarded on 14 and 19 Apr 2019. The OSRT is also working an overall plan for rehabilitating the levee system. 
Next Steps:
  1. Provide an interim level of flood risk reduction at both initial breach repair locations.
  2. Conduct physical damage assessment when water levels recede and the levees are accessible
  3. Design and construct levee rehabilitation to authorized level of flood risk management.

NOAA River Level Observations & Forecasts

L575 Levee Imagery

The U.S. Army Corps of Engineers, Omaha District completes an initial breach closure on levee L575 near Percival, IA June 20, 2019.
The U.S. Army Corps of Engineers, Omaha District completes an initial breach closure on levee L575 near Percival, IA June 20, 2019.
The U.S. Army Corps of Engineers, Omaha District completes an initial breach closure on levee L575 near Percival, IA June 20, 2019.
The U.S. Army Corps of Engineers, Omaha District completes an initial breach closure on levee L575 near Percival, IA June 20, 2019.
USACE contractors at work along levee L575a near Nebraska City, Nebraska May 10, 2019 following March 2019 runoff event.
USACE contractors at work along levee L575a near Nebraska City, Nebraska May 10, 2019 following March 2019 runoff event.
USACE contractors at work along levee L575a near Nebraska City, Nebraska May 10, 2019 following March 2019 runoff event.
Photo documents aerial view of overtopping levee L575 near Nebraska City, Nebraska Mar. 16, 2019, resulting from a major runoff event. (Photo by USACE, Omaha District)
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial view of levee L550 as of June, 11, 2019.
Aerial view of levee L550 as of June, 11, 2019.
The U.S. Army Corps of Engineers, Omaha District completes the initial breach closure on levee L611-614 near Sioux City, Iowa June 12, 2019. The L611-614 Levee System lies directly east of the confluence of the Platte River (River Mile 595).
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
Aerial drone footage shows USACE, Omaha District work continuing on levee L575a June 13, 2019.
This image from June 22, 2019 shows progress of the water drainage after Levee L575a was closed on June 20.
This image from June 22, 2019 shows progress of the water drainage after Levee L575a was closed on June 20.
This image from June 22, 2019 shows progress of the water drainage after Levee L575a was closed on June 20.
This image from June 22, 2019 shows progress of the water drainage after Levee L575a was closed on June 20.
This image from June 22, 2019 shows progress of the water drainage after Levee L575a was closed on June 20.
This image from June 22, 2019 shows progress of the water drainage after Levee L575a was closed on June 20.
This image from June 22, 2019 shows progress of the water drainage after Levee L575a was closed on June 20.
This image from June 22, 2019 shows progress of the water drainage after Levee L575a was closed on June 20.
This image from June 22, 2019 shows progress of the water drainage after Levee L575a was closed on June 20.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view showing Levee 575a progress as of June 24, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 20, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 20, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 20, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 20, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 20, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 20, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of breach L575a northwest of Percival, Iowa June 28, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Aerial view of repair working being done at levee breach L575a_1 July 9, 2019.
Multiple groins are placed on L-575 to divert the river flow from the levee to allow for continued repairs on Sep. 23, 2019.
L-575 outlet breach "D" closure on Dec. 19, 2019 located on the downstream end of the levee system in northwest Missouri
L-575 outlet breach "D" closure on Dec. 19, 2019 located on the downstream end of the levee system in northwest Missouri
L-575 outlet breach "E" closure on Dec. 19, 2019 located on the downstream end of the levee system in northwest Missouri

Restoration Activities

 
Initial Breach Repair # 1 – West of Thurman, IA
Initial Breach Repair # 2 – West of Hamburg, IA
Contractor
Western Contracting Corp. from Sioux City, IA
Newt Maritime Services from Dubuque, IA
Contract Amount
$7.5 Million
$12 Million
Contract Award
April 14, 2019
April 19, 2019
Construction Start
May 4, 2019
May 4, 2019
Estimated
Completion
 
 

Video Gallery

Video by Marisa Gaona, Khary Ratliff
Strengthening Dune Systems through Wrack-Cycling
U.S. Army Corps of Engineers, Engineer Research and Development Center
Nov. 9, 2021 | 6:19
During bouts of severe weather, including tropical storms and hurricanes, coastal dune systems provide crucial protection for coastal communities, but these dunes can be torn apart by high winds and strong surf.

The very surf that at times causes damage is also delivering natural materials that may prove to be the key to a more resilient dune system.

Researchers at the U.S. Army Engineer Research and Development Center, along with partners at the U.S. Army Corps of Engineers Mobile District and The University of Southern Mississippi, are developing methods to use this natural material – known as wrack – to build coastal dunes crucial to protecting the coastline during hazardous weather events like hurricanes.

As part of the USACE Regional Sediment Management Program, researchers are conducting a field study in which wrack that washes up on the beach is collected and placed on existing dunes to incrementally increase dune stability.

Harness the Power of ERDC at ERDCInfo@usace.army.mil
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